FAA WJH Technical Center 111~11"111"\\I"III~\IIIIIIIIIDIIIIIIIIII"1 00090599 LABORATORY MEASUREMENTS OF YERY HIGH FREOUENCY COMMUNICATION EOUIPMENT FOR DATA LINK ,,, ....\t NAFEC 1. UBRARY ""'~: DEC 22 1~75 Ii- t I r&BC'rJVED

-::;-. ~l •.

Anthony Swezeny

. . ~•. •

OCTOBER 1975

INTERI REPORT

Document is available to the public through the National Technical Information Service. Springfield. Virginia 22151

Prepared for U. S. DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION Systems Research & Development Senice Washington, D. C. 20590 NOTICE

This document is dis seminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof.

.. Technical ~eport Documentation Page

1. Reporl No. 2. Government Accession No. 3. Recipient's Cotalog No. FAA-RD-75-159

4. Tille and Sublitle 5. Reporl Dale LABORATORY MEASUREMENTS OF VERY HIGH FREQUENCY October 1975 COMMUNICATION EQUIPMENT FOR DATA LINK 6. Performing Organi zotion Code

r,-;-::;--~------!8. Pedorming Organi .ation Reporl No. 7. AUlhor's) Anthony Swezeny FAA-NA-75-5

9. Pedorming Organi .ation Nome and Address 10. Work Unit No. (TRAIS) ". Federal Aviation Administration National Aviation Facilities Experimental Center 11. Contract or Grant No. 062-222-000 Atlantic City, New Jersey 08405 .' .---:-=---=- ----,_,..,--- ~ 13. Type 01 Report and Period Covered I 12. Sponsoring Agency Name and Address Interim U.S. Department of Transportation October 1973 - October 1974 Federal Aviation Administration Systems Research and Development Service 14. Sponsoring Agency Code T.l".,l-';nc>rnn n r. ?O'lQO 15. Supplementary Notes

16. Abstract

Laboratory measurements were made on very high frequency (vhf), commercial air­ borne transceivers and Federal Aviation Administration (FAA) vhf ground transmitters and receivers. Characteristics of each unit were measured in order to determine suitability for data link application and to provide a data base for subsequent planning of vhf data link flight tests.

Results show that Aeronautical Radio, Inc. (ARINC), transceivers are suitable data link devices and with minor modifications most FAA and general aviation trans­ mitters and receivers tested are also suitable at the 2400 and 4800 bit per second rates.

17. Key Words 18. Distribution Statement Universal Data Link Document is available to the public Differential Phase 'Shift through the National Technical Information Minimum Shift Keying (MSK) Service, Springfield, Virginia 22151

19. Security Classif. (of this report) 20. Security Classif. (of thi s page) 21. No. of Pages 22. Price Unclassified Unclassified 211

Form DOT F 1100.1 (8-72) Reproduction of completed page authorized LIST OF ILLUSTRATIONS

Figure Page

1 Laboratory Test Area 2

2 Receiver Audio Modification for Data Link Output 3 .,

3 Receiver Test Setup I 6

4 Local Oscillator Frequency Stability Test Setup 6

5 Automatic Gain Control Settling Time Test Setup 8

6 Receiver Differential Phase Delay Test Setup 10

7 Receiver Test Setup II 11

8 Transmitter Pass-Band Test Setup 11

9 Transmitter Harmonic Distortion Test Setup 13

10 Transmitter Differential Phase Delay Test Setup 13

11 Transmitter Frequency Stability Test Setup 13

12 Transmitter Power Rise Time Test Setup 15

13 Transmitter Spurious Emission Test Setup 15

LIST OF TABLES

Table Page

1 Receiver Characteristics 7

2 Spurious Response/Emissions 9

3 Transmitter Characteristics 14

iv INTRODUCTION

PURPOSE.

The purpose of this phase of the Data Link Development Program was to measure pertinent technical characteristics of typical very high frequency (vhf) trans­ ceivers, transmitters, and receivers that may be used in a data link system. .. The test results will aid flight-test designs, data interpretations, and will also provide data for future specifications for data-link radiofrequency (RF) equipments.

BACKGROUND.

The universal data link may be implemented in the vhf band (118.0 to 135.975 megahertz (MHz)) with minimum shift keying (MSK) used to modulate this carrier at a 2400 or 4800 bit per second rate.

This method of communication could provide automatic and semiautomatic rapid transfer of intelligence in the ground-air-ground environment. Since the vhf band is becoming overcrowded, a faster means of communicating would seem desirable.

Tests were conducted on available vhf RF equipments to determine their charac­ teristics when using MSK modulation to provide a data base for subsequent plan­ ning of data subsystem and system tests.

DISCUSSION

Conventional transmitter and receiver parameters were measured. Parameters considered important to data link, other than good transmitter and receiver design, were given special attention. Examples of these parameters are trans­ mitter output power rise time, receiver automatic gain control (AGC) attack and decay time, audio delay and distortion, and RF stability and accuracy.

Transmitter output power rise time and receiver AGC will affect the "through­ put" of a data-link system, or the message-handling capability. These equip­ ment reaction times effectively constitute a system "dead time" and must be normalized or compensated for to ensure efficient communications.

Audio delay is the time required for the MSK modulating frequencies to pass through a receiver or transmitter. Since this modulation technique utilizes two frequencies, the delay between them is called "differential phase delay." Digital intelligence is extracted from the demodulated MSK signal by slope detection at the iero crossover point; therefore, if the differential phase delay is excessive, there will be a loss of intelligence. Distortion also contributes to the loss of intelligence.

1 2 System differential phase delay is discussed in the Airlines Electronic Engi­ neering Commitee (AEEC) letter, 73-016/VHFC-03, where 80 percent of the total permissible phase delay would be allowed for the airborne system and the remaining 20 percent be allowed for the ground system. The maximum delay for both transmitters and receivers is described by the formula: 1/IOf seconds, where "f" is the audio frequencies from 600 Hz to 6.6 kilohertz (kHz). .. Another area of concern, with the advent of 25 kHz spacing, would be receiver selectivity. The AEEC letter, 73-098/VHFC-06, proposed a selectivity of ±9 kHz at the 6 decibel (dB) points. RF stability and accuracy would have a direct bearing in meeting this criteria.'

Figure I represents the laboratory test area showing representative type test equipment. All testing was performed using soft microvolts (~V) from the signal generator. Simply stated, soft microvolts means operating a signal generator without an impedance matching 6 dB attenuater at the output.

Transceivers conforming to Aeronautical Radio, Inc. (ARINC), characteristics Nos. 546 and 566-A had been manufactured with data-link capabilities. The other units were voice communication devices and did not have data-link key lines or a wide audio bandwidth. Minor modifications were needed during test­ ing to determine the feasibility of the latter group as data-link devices. No specific design considerations were given to anyone unit; rather a general approach was made to overcome audio filtering within the unit.

MODIFICATIONS REQUIRED.

A wide-band audio amplifier, shown in figure 2, was used with the receiver section of two transceivers; the NARCO, model COM-II-A, and King, model KY-195B. 14 Vd. c.

4.7k ~ INPUT "'--"'-1 ~---+OUTPUT 0.082 J-LF 12.4k

75-5-2

FIGURE 2. RECEIVER AUDIO MODIFICATION FOR DATA LINK OUTPUT

3 In the NARCO transceiver modulator. capacitor 430 (C430) was changed from a 10 to 0.5 microfarad (~F) capacitor to support wide-band data-link operation.

The auxiliary wide-band audio output was utilized as the data link port in the A/N. model GRR-23. receiver. The intermediate frequency (IF) amplifer was modified by removing capacitor 41 (C4l) and the audio output taken from feed­ through capacitor 5 (C5). then to a potentiometer and across a 100-ohm resistive load which represented data link output impedance.

Modification to the TV-36 transmitter modulator. to support wide-band data­ link operation. was made as follows:

C-303 replaced with 0.005 ~F capacitor L-30l replaced with 0.1 ~F capacitor

Backup emergency communication (BUEC). model FA-8l9l. transceivers. Nos. 1 and 2. were not modified because of the extensive changes that would have been required to the filters and audio components and because of the remote control frequency scheme design.

EQUIPMENT DESCRIPTION.

The following equipments were tested:

TRANSCEIVERS TRANSMITTERS

1 King. model KTR-9l00A* 1 A/Nt model GRT-2l* 2 Bendix. model RTA-43* 1 TV-36 2 Collins. model 6l8M-2B (Modified) 1 Collins. model 6l8M~2B RECEIVER 2 BU~C. model FA-8l9l* 1 King. model KY-195B 1 A/N. model GRR-23 1 NARCO. model COM-l1A 1 GENAVE. model ALPHA-lOO/360

*25 kHz frequency channel equipments

The King. model KTR-9l00A. and Bendix. model RTA-43A. conform to ARINC char­ acteristics No. 566A and the Collins. model 6l8M2B. conform to ARINC charac­ teristics No. 546. The two modified Collins transceivers were the only data­ link transceivers capable of receiving a signal while the push-to-talk (PTT) and data-link-key lines are grounded. This modification was incorporated by the manufacturer.

The King. model KY-195B. NARCO. model COM-llA. and GENAVE. model ALPHA-lOO/360. would be consider~d general aviation type transceivers while the remaining transmitters and receivers are Federal Aviation Administration (FAA) type.

4 The following test equipment were used:

1 Hewlett-Packard memoryscope, model l8l-A 1 Hewlett-Packard signal generator, model 8660 1 Clarke Hess function generator, model 750 1 Bird Termaline wattmeter, model 71 1 G-R variable attenuator, model 874 1 Sanders Associates solid state coax switch, model D-S9 1 Texscan spectrum analyzer, model AL-40 1 Systron Donner printer, model 5103 1 Heath-Kit distortion meter, mode~ LM-58 1 Hewlett-Packard counter, model 5300

TEST PROCEDURES AND RESULTS

RECEIVER CHARACTERISTIC MEASUREMENTS.

Standard receiver and transmitter performance characteristic tests were per­ formed on the available equipment with special attention given to those char­ acteristics that would affect an MSK modulated signal at 2400 or 4800 bit per second. The tests are listed and described below.

USABLE SENSITIVITY. With the receiver connected as shown in figure 3, the sensitivity was measured with a 12 dB signal plus noise-to-noise ratio while maintaining at least 50 percent of the rated audio output. The results are shown in table 1.

SQUELCH LIMIT SENSITIVITY. With the receiver connected as shown in figure 3, and the squelch control at its maximum position, the amount of signal required was measured that caused the receiver to go from a quiet state to completely open; The results are shown in table 1. Only receivers with externally accessible squelch controls had this test performed.

QUIETING SENSITIVITY. Figure 3 shows the test connection for measurement of minimum signal required for 20 dB of quieting. Results are shown in table 1.

SQUELCH THRESHOLD SENSITIVITY. Figure 3 shows the test connection for this measurement with the squelch control adjusted at its minimum useful position. The amount of signal required to completely open the receiver was noted and recorded in table 1. Again, only receivers with accessible squelch controls were tested.

RECEIVER NOISE FIGURE. Several methods of noise-figure measurements were per­ formed with no suitable results. Airborne receiver circuitry and transistorized circuits do not lend themselves to direct measurement techniques. As a result, this test was not·performed.

LOCAL OSCILLATOR STABILITY. When the test receiver was connected as shown in figure 4, the signal being injected into the first mixer was measured. The results are shown in table 1.

5 COUNTER

I dB AND AUDIO RF SIGNAL I TEST 4~ L·_ 4Il~ DISTORTION GENERATOR GENERATOR RECEIVER * ~ .. METER

AUDIO OUTPUT LOAD NOTE: * USABLE SENSITIVITY SQUELCH LIMIT SENSITIVITY QUIETING SENSITIVITY SQUELCH THRESHOLD SENSITIVITY SPURIOUS RESPONSE ATTENUATION HARMONIC DISTORTION RECEIVER PASS-BAND CHARACTERISTIC 75-5-3

FIGURE 3. RECEIVER TEST SETUP

LOCAL OSCILLATOR TEST OUTPUT RECEIVER - COUNTER - PRINTER

75-5-4

FIGURE 4. LOCAL OSCILLATOR FREQUENCY STABILITY TEST SETUP

6 TABLE 1. RECEIVER CHARACTERISTICS

Oscillator Automatic Differential Usable Squelch Quieting Squelch Local Gain Control Phase Shift Adjacent Inter- Sensitivity Limit Sensi tivity Threshold Stability Attack Decay 2400 4800 Channel Modulation Model/Serial No. (\IV) (\IV) (\IV) ()JV) (Percent) (ms) (ms) (Degrees) (dB) _(mV)

King, KTR-9l00A, 1006 Hz Hi 2103 2.1 -­ 9.6 -­ 0.00008 13 70 1. 73 2.59 63.0 14.0 Bendix, RTA-43A, 50 Hz Lo Good 1050 1.8 -­ 6.6 -­ 0.00003 3.7* 76* 12.96 8.64 74.0 Reject

Bendix, RTA-43A, 75 Hz Lo 1027 1.6 -­ 6.1 -­ 0.00007 13* -­ 8.21 10.37 58.0 100.0 Collins, 6l8M-2B, 100 Hz Lo 2996 1.4 -­ 7.0 -­ 0.00007 13 7 12.23 7.95 73.0 37.0 Collins, 6l8M-2B, 20 Hz Hi 2971 1.5 -­ 10.0 -­ 0.000015 15 8 10.07 6.22 64.0 48.0 -...J Collins, 6l8M-2B, 50 Hz Lo 4868 1.2 -­ 3.2 -­ 0.00003 44 -­ 2.89 11.92 74.5 43.0 BUEC, FA-8l91, 100 Hz Hi 1 2.5 -­ 5.6 0.6 0.000003 36 500 25.49 36.29 56.0 BUEC, FA-8l91, 158 Hz Hi 2 2.5 -­ 7.0 2.9 0.000035 44 190 11.23 4.32 57.0

King, KY-l95B, 1500 Hz Lo 3145** 1.3 160 3.0 1.6 0.00004 32 20 16.85 6.05 71.5 180.0

NARCO COM-llA, 500 Hz Lo ** 2.0 75 None 2.0 0.0006 76 138 20.74 12.10 63.0 26.0

GENAVE, 1800 Hz Lo ALPHA-lOO/360 2.7 75 36.0 0.5 0.0013 6 14 15.12 12.96 60.5 1.8

A/N GRR-23, No over­ 100 Hz Hi 4293** 0.7 ride 300.0 1.6 0.00014 22 40 3.89 6.91 76.0 89.0

NOTES: )JV Means microvolts; IDS means milliseconds; mV means millivolts. * Means automatic gain control to second intermediate frequency. ** Means modified audio. SPURIOUS RESPONSE ATTENUATION. With the test receiver connected as shown in figure 3, any signal, except subharmonies of the tuned frequency, producing 20 dB of quieting, was recorded. Results were normalized in table 2.

AUTOMATIC GAIN CONTROL (AGC) SETTLING TIME. With the test receiver connected as shown in figure 5, a solid state switch and storage oscilloscope were acti­ vated simultaneously. Photographs were taken which are presented in the appen­ dix A and the 1000 ~V signal level results are shown in table 1. The 90 percent point of steady-state is the measurement criteria.

SOLID RF SIGNAL STATE TEST GENERATOR - SWITCH --, RECEIVER ~ ~= LOAD ~ , T POWER MANUAL - STORAGE SUPPLY - SWITCH TRIGGER OSCILLOSCOPE

75-5-5

FIGURE 5. AUTOMATIC GAIN CONTROL SETTLING TIME TEST SETUP

RECEIVER HARMONIC DISTORTION. With the test receiver connected as shown in figure 3, direct readings were taken from the distortion meter. The results are shown graphically (appendix B) for 30 percent modulation in figures B-1 through B-15 and for 80 percent modulation in figures B-16 through B-29.

RECEIVE PASS-BAND CHARACTERISTICS. With the test receiver connected as shown in figure 3, the pass band was measured directly with a dB meter. The results are normalized to zero dB at 1000 Hz and are shown graphically (appendix C) for 30 percent modulation in figures C-1 through C-14 and for 80 percent modulation in figures C-15 through C-28.

RECEIVER AUDIO PHASE DELAY. Figure 6 shows the test connections for this mea­ surement which were read directly from the oscilloscope. The results are shown graphically (appendix D) in figures D-1 through D-12 and the differential phase delay (in degrees) for data-link frequencies are shown in table 1.

8 TABLE 2. SPURIOUS RESPONSE/EMISSIONS

RECEIVER TRANSMITTER RECEIVER TRANSMITTER Model/Serial No. (MHz) (dB) (MHz) (dB) Model/Serial No. (MHz) (dB) (MHz) (dB)

King, KR-9106A, 127.00 0.0 125.0 0 NARCO, COM-11A 127.000 0 127.0 0 2103 132.00 78.4 250.0 -58 11.980 66 148.0 -90 147.00 82.4 375.0 -76 75.480 100 254.0 -78 421.00 83.4 123.810 93 538.00 83.9 130.210 95 558.00 81.4 132.990 81 150.940 53 Bendix, RTA-43A, 127.00 0.0 127.0 0 265.990 66 1050 4.81 101.0 254.0 -53 287.050 84 20.02 100.0 381.0 -47 404.960 59 86.99 77.0 543.930 68 567.860 75 Bendix, RTA-43A, 127.00 0.0 127.0 0 1027 19.09 98.0 254.0 -52 GENAVE, 127.000 0 128.0 0 20.01 89.0 381.0 -58 ALPHA-100/360 115.661 76 106.6 -80 86.99 75.0 121. 475 70 117.6 -65 125.024 73 138.5 -65 Collins, 618M-2B, 127.00 0.0 127.0 0 127.984 40 149.5 -74 -.D 2996 453.00 94.0 254.0 -62 129.273 66 256.0 -40 131.025 55 Collins, 618M-2B, 127.00 0.0 TX INOP 138.702 55 2971 129.12 95.0 139.210 82 452.99 87.0 142.623 76 144.572 83 Collins, 618M-2B, 127.00 0.0 127.0 0 148.421 73 4868 124.63 105.0 254.0 -60 173.854 66 125.75 105.0 381.0 -75 213.944 85 126.05 112.0 277.456 72 126.86 99.0 298.857 77 126.88 113.0 302.882 80 453.00 113.0 324.335 76 578.276 55 BUEC, FA-8191, 127.00 0.0 127.0 0 1 131. 73 101.0 254.0 -57 A/N, GRR-23, 120.850 0 381.0 -65 4293 None

BUEC, FA-8191, 127.00 0.0 127.0 0 A/N, GRT-21, 120.5 0 2 131.73 96.0 254.0 -58 379 241.0 -84 381.0 -65 361.5 -85

King, KY-195B, 125.00 0.0 127.0 0 TV-36 , -80 3145 250.00 -58.0 63.5 -93 1349 375.00 -76.0 192.0 -90 254.0 -81

NOTE: (MHz) means megahertz; (dB) means decibel. FRE­ QUENCY COUNTER •I I OSCILLOSCOPE AUDIO f-. RF SIGNAL ~ TEST CH A GENERATOR GENERATOR .. RECEIVER ~ CH B

75 - 5-63

FIGURE 6. RECEIVER DIFFERENTIAL PHASE DELAY TEST SETUP

Degrees of differential phase shift were determined from the formula:

degrees = 360 f (L1

ADJACENT CHANNEL SELECTIVITY. With the test receiver connected as shown in figure 7, signal generator No.2 attenuator was adjusted until the 12 dB S+N/N was d~creased to 6 dB. This was performed at both the high and low adjacent channels and the worst case is shown in table 1.

INTERMODULATION ATTENUATION. With the test receiver connected as shown in figure 7, third order mixing, f o=2fa-fb , and second order mixing, fa=fb-fo were applied. The worst case results are shown in table 1.

TRANSMITTER CHARACTERISTIC MEASUREMENTS.

TRANSMITTER PASS-BAND CHARACTERISTICS. With the test transmitter connected as shown in figure 8, a reference of the modulated carrier at 1000 Hz was estab­ lished. This reference was six divisions peak to peak. Next, the unmodulated carrier was noted in divisions. The difference of these two levels established the reference audio. Normalized dB below 1000 Hz was calculated, using the following formula:

20 log a-x = dB where: y a = peak to peak measured in divisions x = unmodulated carrier in divisions y = reference audio in divisions

10 RF SIGNAL GENERATOR 1 AUDIO OUTPUT LOAD I * ISOLA­ dB AND TEST ~ TION DISTORTION RECEIVER •• =~ TEE • - METER

RF SIGNAL " GENERATOR 2 NOTE: ADJACENT CHANNEL SELECTIVITY INTERMODULATION ATTENUATION

75-5-76

FIGURE 70 RECEIVER TEST SETUP II

VARIABLE ATTENUATOR AUDIO TEST 150 MHz GENERATOR TRANSMITTER I ___... OSCILLOSCOPE

.~ 4~ LOAD .~ -... 75-5-77

FIGURE 8. TRANSMITTER PASS-BAND TEST SETUP

11 The calculated results are shown graphically (appendix E) in figures E-l through E-14.

TRANSMITTER HARMONIC DISTORTION. With the test transmitter connected as shown in figure 9, the measurement was read directly from the distortion meter and is shown graphically (appendix F) in figures F-l through F-13.

TRANSMITTER DIFFERENTIAL PHASE DELAY. With the test transmitter connected as shown in figure 10, readings were taken directly from the presentation on the oscilloscope and are shown graphically (appendix G) in figures G-l through G-13. .

Using the formula:

degrees = 360f (~~ )

The differential phase delay in degrees was calculated for the MSK frequencies and tabulated table 3.

TRANSMITTER FREQUENCY STABILITY. With the test transmitter connected as shown in figure 11, the frequency was counted and recorded on a printer. The results are tabulated in table 3.

TRANSMITTER POWER RISE TIME. With the transmitter connected as shown in figure 12, the transmitter and storage oscilloscope were triggered simultane­ ously and a photograph taken of the display. The data-link key line was also used when the unit had the capability. The results are tabulated in table 3 and the photographs are in the appendix A.

TRANSMITTER SPURIOUS EMISSION. With the test transmitter connected as shown in figure 13, spurious emissions were displayed on the spectrum analyzer and identified with the aid of the signal generator. The results are tabulated in table 2.

12 VARIABLE ATTENUATOR AUDIO dB AND DISTORTION f----­ TEST TRANSMITTER ~ GENERATOR ...... , METER

~:LOAD 75-5-92 -~ ....

FIGURE 9. TRANSMITTER HARMONIC DISTORTION TEST SETUP

VARIABLE ATTENUATOR OSCILLOSCOPE AUDIO TEST ~. '-­ ~ TRANSMITTER ~ GENERATOR I ,.., CH A CH B

~ :: LOAD ~ -:.:­-

75-5-106

FIGURE 10. TRANSMITTER DIFFERENTIAL PHASE DElAY TEST SETUP

~ ...., VARIABLE ATTENIUATO~I TEST I J I I....-T_R_A_N_S_M_I_T_T_E_R...... ' 1 COUNTER ---- lPRINTER

.~ ~: LOAD 75-5-120 • ----

FIGURE 11. TRANSMITTER FREQUENCY STABILITY TEST SETUP

13 TABLE 3. TRANSMITTER CHARACTERISTICS

Differential TX Phase Shift Stability Rise Time (Degrees) Model/Serial No. (Percent) (PTT) (D/L) 2400 4800

King, KTR-9100A, 133 Hz Hi 2103 .00008 78 DIS 11.23 0.86

Bendix, RTA-43A, 133 Hz La 1050 .0001 6ms 15.5 ms 0.43 3.46

Bendix, RTA-43A 260 Hz La 1027 .0002 3.4 ms 18 ms 3.89 3.46

Collins, 618M-2B 100 Hz La 2996 .00007 95 ms 20 ms 17.37 6.13

Collins, 618M-2B, 2971 TX INOP 100 ms 18 ms 7.08 1.81

Collins, 618M-2B, 5 Hz La 4868 .00001 96 ms 2.7 ms 10.06 7.86

BUEC, FA-8191, 10 Hz Hi 1 .000007 112 ms 122.25 37.15

BUEC, FA-8191, 88 Hz Hi 2 .00007 112 ms 109.30 63.07

King, KY-195B, 2300 Hz La 3145""" .002 10.ms 14.69 0.86

NARCO, COM-11A 1275 Hz La "'''' .001 14 ms 25.49 22.46 GENAVE, 1800 Hz Lo ALPHA-100/360 .00026 23 DIS 19.01 0.86

A/N GRT-21, 1400 Hz Hi 379 .0005 450 s 3.89 1.73

TV-36,"'''' 1900 Hz Hi 1349 .00005 14 DIS 0.40 2.10

NOTE: "''''means modified audio

14 VARIABLE ATTENUATOR TEST STORAGE TRANSMITTER II 1_ II ' V OSCILLOSCOPE

~ := LOAD TRIGGER _-.... PUSH - 75-5-121 TO TALK

FIGURE 12. TRANSMITTER POWER RISE TIME TEST SETUP

VARIABLE .ATTE NUATOR TEST NOTCH SPECTRUM TRANSMITTER . FILTER ANALYZER I + I --

COUNTER I-­ RF SIGNAL GENERATOR I-­

75-5-122

FIGURE 13. TRANSMITTER SPURIOUS EMISSION TEST SETUP

15 FAA WJH Technical Center 1lllillnlllllllllllllllllll~111111111111111111I1 00090599 SUMMARY OF RESULTS

Average usable sensitivity for these elements was 1.78 microvolts (~V) (soft), the most sensitive receiver being the A/N model GRR-23.

Average quieting sensitivity for 9 receivers was 6.46 ~V (soft). The NARCO model COM-llA could not be quieted. The GENAVE, model ALPHA 100/360 and A/N GRR-23 have 36 ~V and 300 ~V, respectively. The last three units were not included for averaging.

Worst case local oscillator stability was 0.0013 percent.

Attack time of automatic gain control (AGC) in the receivers varied from 3.7 to 76 milliseconds (ms) , the decay time varied from 7 to 500 ms. The 500 ms decay time was the backup emergency communication (BVEC FA-8l9l). If the BVEC receivers are excluded, the longest decay time was 138 ms.

The spread in differential phase delay of the receivers (in degrees) at 2400 Hz is 1.73° to 25.49°; for 4800 Hz, is 2.59° to 36.29°.

Average adjacent channel selectivity was -65.88 dB, the worst case being -56 dB. When receiver audio circuits were modified, distortion was introduced in some receivers. Modulation of 30 percent shows a higher distortion percentage than 80 percent modulation. At 80 percent carrier modulation, the distortion was less than 15 percent at frequencies associated with data link. Figure B-20 (appendix B) represents the response of Collins transceiver No. 2971 which is considered abnormally high.

With the exception of the GENAVE and BVEC equipment, normalized receiver audio outputs of data-link frequencies were well within 6 dB of the 1000 Hz reference level. Audio modification was applied when necessary and practical to make this measurement.

Pass band for transmitter data-link frequencies was within 6 dB of the 1000 Hz reference level, except for the BVEC and NARCO units. The simple modification of the NARCO (figure 2) showed its feasibility as a data-link transmitter. The BVEC elements presented a major problem because of an active notch filter on the A-19 control card. This filter was tuned to remote control frequency 2423 Hz which provided approximately 20 dB suppression of the minimum shift keying (MSK) 2400 Hz carrier modulating frequency. A significant fact is that this frequency is used by both the lower and higher MSK bit rates.

Audio distortion for all transmitters tested was 8 percent or less.

Differential phase shift of transmitter (in degrees) excluding BVEC elements, varies between 0.4° to 25.49° for the 2400 Hz and between 0.86° to 22.46° for the 4800 Hz. Phase shift of BVEC transmitters was excessive for both bit rates, from 37° to 122° because of the remote control frequency design.

16 Transmitter output power rise time with push-to-ta1k (PTT) keying was spread between 450 ~s to 112 IDS. Data-link keying (units with that capability) spread was between 2.7 to 20 IDS.

Worst-case stability of transmitter frequency was 0.0002 percent. General aviation type transmitters were operated so as not to exceed their rated duty cycle.

17 CONCLUSIONS

Laboratory tests show that there are several available transceivers, trans­ mitters, and receivers on which to base implementation of a data-link system at a 2400 and a 4800 bit per second rate.

When provided with automatic keying capability, the A/N model GRT-21 could be operated satisfactorily as a data-link transmitter.

The model TV-36 transmitter would be satisfactory with limited modifications.

The A/N model GRR-23 would be a satisfactory data-link receiver if modified. Of the three general-aviation transceivers, two appear to be feasible for data­ link operation.

Transceivers meeting ARINC standards function well as data-link elements. The BUEC model FA-8191 cannot be considered suitable for data-link service because of the design of the remote control channeling circuit. Except for the two modified Collins transceivers, none of the receivers were operable when the PTT and data-link-key lines are grounded. As the receiver is dead during this period, system through-put would have to be measured using the longest transmitter rise time of anyone transceiver.

18 APPENDIX A

RECEIVER AUTOMATIC GAIN CONTROL ATTACK/DECAY TIME AND TRANSMITTER RISE TIME

• LIST OF ILLUSTRATIONS

Figure Page

A-I AGC Attack Time, King Model KTR-9l00A, Serial No. 2103 A-I

A-2 AGC Decay Time, King Model KTR-9l00A, Serial No. 2103 A-2

A-3 AGC Attack Time, Bendix Model RTA-43A, Serial No. 1050 A-3

A-4 AGC Decay Time, Bendix Model RTA-43A, Serial No. 1050 A-4

A-5 AGC Attack Time, Bendix Model RTA-43A, Serial No. 1027 A-5

A-6 AGC Attack Time, Modified Collins Model 6l8M-2B, A-6 Serial No. 2996

A-7 AGC Decay Time, Modified Collins Model 6l8M-2B, A-7 Serial No. 2996

A-8 AGC Attack Time, Modified Collins Model 6l8M-2B, A-8 Serial No. 2971

A-9 AGC Decay Time, Modified Collins Model 6l8M-2B, A--9 Serial No. 2971

A-lO AGC Attack Time, Collins Model 6l8M-2B, Serial No. 4868 A-lO

A-II AGC Attack Time, BUEC Model FA-8l9l, Serial No. 1 A-II

A-12 AGC Decay Time, BUEC Model FA-8l9l, Serial No.1 A-12

A-13 AGC Attack Time, BUEC Model FA-8l9l, Serial No.2 A-13

A-14 AGC Decay Time, BUEC Model FA-8l9l, Serial No.2 A-14

A-15 AGC Attack Time, King Model KY-195B, Serial No. 3145 A-15

A-16 AGC Decay Time, King Model KY-195B, Serial No. 3145 A-16

A-17 AGC Attack Time, NARCO Model COM-llA A-17

A-18 AGC Decay Time, NARCO Model COM-llA A-18

A-19 AGC Attack Time, GENAVE Model Alpha 100/360, A-19 Serial No. 43-22

A-20 AGC Decay Time, GENAVE Model ALPHA 360, Serial No. 43-22 A-20

A-i LIST OF ILLUSTRATIONS (Continued)

Figure Page

A-2l AGC Attack Time A/N Model GRR-23, Serial No. 4293 A-2l

A-22 AGC Decay Time, A/N Model GRR-23 , Serial No. 4293 A-22

A-23 Transmitter Rise Time, King Model KTR-9l00A/Bendix A-23 Model RTA-43A, Serial No. 1050

A-24 Transmitter Rise Time, Bendix Model RTA-43A, Serial A-24 No. l027/Modified Collins Model 6l8M-2B, Serial No. 2996

A-25 Transmitter Rise Time, Modified Collins Model 6l8M-2B, A-25 Serial No. 2996/Collins Model 6l8M-2B, Serial No. 4868

A-26 Transmitter Rise Time, BUEC Model FA-8l9l, Serial No.1, A-26 Serial No. 2/King Model KY-195B, Serial No. 3145

A-27 Transmitter Rise Time, NARCO Model COM-llA/GENAVE A-27 Model ALPHA 100/360, Serial No. 43-22/A/N Model GRR-2l, Serial No. 379

A-28 Transmitter Rise Time, TV-36 , Serial No. 1349 A-28

A-ii NO 3 f-lV INPUT PICTURE

NO A TOM TIC "AIN CONT OL ACTION

1000 f-l V INPUT 10 ms/DIV

20 mV INPUT 2 ms IDIV

75-5-A-l

FIGURE A-l. AGC ATTACK TIME, KING MODEL KTR-9100A, SERIAL NO. 2103

A-l NO 3 fJ-V INPUT PICTURE

NO AUTOMA Ie GAIN CO ROL ACTION

1000 fJ- V INPUT 20 ms/DIV

20 mV INPUT 20 ms/DIV

75-5-A-2

FIGURE A-2. AGC DECAY TI~ffi, KI G MODEL KTR-9100A, SERIAL NO. 2103

A-2 3 fJ-V INPUT 2 ms/DIV

1000 fJ- V INPUT lms/DIV

20 mV INPUT 5 ms IDIV

75-5-A-3

FIGURE A-3. AGe ATT CK TIME, BENDl HODEL RTA-43A, SERIAL NO. 1050

A-3 3 fJ- V INPUT 100 ms/DIV

1000 fJ-V INPUT 20 ms /DIV

20 mV INPUT 5 ms/DIV

75-5-A-4

IRE A-4. AGC DECAY TIME, B'NDIX M DEL RTA-43A, SERIAL NO. 1050

A-4 3 f.l-V INPUT 2 ms/DIV

1000 f.l- V INPUT 2 ms/DI V

20 mV INPUT 5 ms IDIV

75-5-A-5

FIGURE A-5. AGC ATTACK TI~lli, BENDIX MODEL RTA-43A, SERIAL NO. 1027

A-5 3 I.l.V INPUT 10 ms/DI V

1000 I.l. V INPUT 10 ms/DI V

20 mV INPUT 10 ms/DI V

75-5-A-6

FIGURE A-6. AGC ATTACK TIME, MODIFIED COLLI S MODEL 6l8M-2B, Serial rO. 2996

A-6 3 flY INPUT lOms/DIY

1000 flY INPUT 10 ms/DI Y

20 mY INPUT 10ms/DIY

75-5-A-7

FIGURE A-7. AGC DECAY TIME, MODIfIED COLLINS MODEL 618M-2B, SERIAL NO. 2996

A-7 3 f-LV INPUT lOms/DIV

1000 f-LV INPUT 10 ms/DIV

20 mV INPUT 10 rns / DI V

75-5-A-8

FIGURE A-8. AGC ATTACK TIME, MODIF ED CO~1INS MODEL 618M-2B, SERIAL NO. 2971

A-8 3 fJ-V INPUT 10 ms/DIV

1000 fJ- V INPUT 10 ms !DIV

20 mV INPUT 10 ms/DIV

75-5-A-9

FIGURE A-9. AGe DE AY TIM~, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971

A-9 3 fJ-V INPUT 10 ms/DIV

1000 fJ- V INPUT 10 ms/DIV

20 mV INPUT 20 ms/DIV

75-5-A-IO

FIGURE A-10. AGe ATTACK TIME, COLLINS MODEL 618M-2B, SERIAL NO. 4868

A-10 3 f.lY INPUT 100 ms/DIY

1000 f.l Y INPUT 10 ms/ DIY

20 mY INPUT 10 ms/DIY

75-5-A-ll

FIGURE A-ll. AGC ATTACK TIME, BUEC MODEL FA-8191, SERIAL NO.1

A-ll 3 fl V INPUT 100 ms / DIV

1000 fl V INPUT 100 ms / DIV

20 mV INPUT 100 ms/DIV

75-5-A-12

FIGURE A-12. AGC DECAY TIME, BUEC MODEL FA-8191, SERIAL NO.1

A-12 3 jJ.V INPUT 200 ms/DIV

1000 jJ.V INPUT 10 ms / DIV

20 mV INPUT 10 ms/DIV

75-5-A-13

FIGURE A-13. AGC ATTACK TIME, BUEC MODEL FA-8191, SERIAL NO. 2

A-13 5 f-LV INPUT 20 ms/DIV

1000 f-L V INPUT 50 ms /DIV

20 mV INPUT 100 ms/ DIV

75-5-A-14

FIGURE A-l4. AGe DECAY TIME, B EC MODEL FA-8191, SERIAL NO. 2

A-14 3 flV INPUT 5 ms/DIV

1000 flV INPUT 10 ms/DIV

20 mV INPUT 10 ms/DIV

75-5-A-15

FIGURE A-1S. GC TTACK T_E, KING MODEL KY-195B, SERIAL NO. 3145

A-1S 3 f-lV INPUT 10 ms /DIV

1000 f-lV INPUT 10 ms/DIV

20 mV INPUT 10 ms/DIV

75-5-A-16

FIGURE A-16. AGC DECAY TIME, KI.G MODEL KY-195B, SERIAL NO. 3145

A-16 3 f.lV INPUT 10 ms/DIV

1000 f.lV INPUT 20 ms/DIV

20 mV INPUT 10 ms/DIV

75-5-A-17

FIGURE A-17. AGC ATTACK TIME, NARCO MODEL, COM-llA

A-17 3 flY INPUT 20 ms/DIV

1000 flY INPUT 20 ms/DIV

20 mV INPUT 20 ms/DIV

75-5-A-18

FIGURE A-18. AGC DECAY TIME, NARCO MODEL COM-IIA

A-18 3 f.J.V INPUT 2 ms IDlV

1000 f.J. V INPUT 2 ms IDIV

20 mV INPUT 2 ms/DIV

75-5-A-19

FIGURE A-19. AGC ATTACK TIME, GENAVE MODEL ALPHA 100/360, SERIAL NO. 43-22

A-19 3 f-lV INPUT 2 ms IDlV

1000f-lVINPUT 2 ms/DIV

20 mV INPUT 2 ms/DlV

75-5-A-20

FIGURE A-20. AGC DECAY TIME, GiNAVE MODEL ALPHA 360, SERIAL NO. 43-22

A-20 3 fJ-V INPUT 20 ms/DIV

1000 fJ-V INPUT 20 ms / DIV

20 mV INPUT 20 ms/DIV

75-5-A-21

FIGURE A-2l. CK T IE AI 10DEL GRR-23, SERIAL NO. 4293

A-21 3 fJ-V INPUT 10 ms /DIV

1000 fJ-V INPUT 10 ms/DIV

20 mV INPUT 10 ms/DIV

75-5-A-22

FIGURE A-22. AGe DECAY TIME, A/N MODEL GRR-23, SERIAL NO. 4293

A-22 KING, MODEL KTR-9100A sin 2103 20 ills/DIY PTT

BENDIX, MODEL RTA-43A sin 1050 2 illS /DIV PTT

BENDIX, MODEL RTA-43A sin 1050 5 ills/DIY D/L KEY

75-5-A-23

FIGURE A-23. TRANSMITTER RISE TIME, KING MODEL KTR-9100A/BENDIX MODEL RTA-43A, SERIAL NO. 1050 A-23 BENDIX, MODEL RTA-43A sin 1027 1 rns/DIY PTT

BENDIX, MODEL RTA-43A s/~ 1027 5 rns/DIY D/L KEY

COLLINS, MODEL 618M-2B sin 2996 20 rns/DIY PTT

75-5-A-24

FIGURE A-24. TRANSMITTER RISE TIME, BE DI MODEL TRA-43A, SERIAL NO. 1027/ MODIFIED COLLINS ODEL 618-2B, SERIAL NO. 2996

A-24 COLLINS, MODEL 618M-2B sin 2996 10 ms/DIV D/L KEY

COLLINS, MODEL 618M-2B 's/n 4868 20 ms /DlV PTT

COLLINS, MODEL 618M-2B s /n 4868 1 ms/DIV D/L KEY

75-5-A-25

FIGURE A-25. TRANSM1TTER RISE T MODIFIED COLLINS MODEL 618-2B, SERIAL NO. 2996/cOLLINS MODEL 618M-2B, SERIAL NO. 4868

A-25 B VEC, MODEL F A-8191 sin 1 20 rns IDIV LOCAL KEY

BVEC, MODEL FA-8191 sin 2 20 rns IDIV LOCAL KEY

KING, MODEL KY -195B sin 3145 2 rns IDIV PTT

75-5-A-26

FIGURE A-26. TRANSMITTER RI E TIME, B C MODEL FA-8191 SERIAL NO.1, SERIAL NO. 2/KING MODEL KY-1 B, SERIAL NO. 3145

A- 26 NARCO, MODEL COM-IIA 5 rns/DIV PTT

GENAVE, MODEL ALPHA-360 5 rns/DIV PTT

AN/GRT-2I sIn 379 100 us/DIY PTT

75-5-A-27

FIGURE A- 27 . TRANSMITTER RISE TIME, NARCO MODEL COM-11A/GENAVE MODEL ALPHA 100/360, SERIAL NO. 43-22/A/N MODEL GRR-21, SERIAL NO. 379

A- 27 TV -36 s /n 1349 lOms/DIV PTT

75-5-A-28

FIGURE A-28. TRANSMITTER RISE TIME, TV-36, SERIAL NO. 1349

A- 28 APPENDIX B

HARMONIC DISTORTION RECEIVER AUDIO 30/80 PERCENT MODULATION LIST OF ILLUSTRATIONS

Figure Page

B-1 Receiver Data Link Audio Harmonic Distortion 30 Percent B-1 Modulation, King Model KTR-9l00A, Serial No. 2103

B-2 Receiver Data Link Audio Harmonic Distortion 30 Percent B-2 Modulation, Bendix Model RTA~43A, Serial No. 1050

B-3 Receiver Data Link Audio Harmonic Distortion 30 Percent B-3 Modulation, Bendix Model RTA-43A, Serial No. 1027

B-4 Receiver Data Link Audio Harmonic Distortion 30 Percent B-4 Modulation, Modified Collins Model 6l8M-2B, Serial No. 2996

B-5 Receiver Data Link Audio Harmonic Distortion 30 Percent B-5 Modulation, Modified Collins Model 6l8M-2B, Serial No. 2971

B-6 Receiver Data Link Audio Harmonic Distortion 30 Percent B-6 Modulation, Collins Model 6l8M-2B, Serial No. 4868

B-7 Receiver Audio Harmonic Distortion 30 Percent Modulation, B-7 BUEC Model FA-8l9l, Serial No. 1

B-8 Receiver Audio' Harmonic Distortion 30 Percent Modulation, B-8 BUEC Model FA-8l9l, Serial No. 2

B-9 Receiver Modified Audio Harmonic Distortion 30 Percent B-9 Modulation, King Model KY-195B, Serial No. 3145

B-lO Receiver Audio Harmonic Distortion 30 Percent Modulation, B-lO King Model KY-195B, Serial No. 3145

B-ll Receiver Modified Audio Harmonic Distortion 10 ~V Input, B-ll 30 Percent Modulation, NARCO Model COM-llA

B-12 Receiver Modified Audio Harmonic Distortion 1000 ~V, B-12 230 mV Input, 30 Percent Modulation, NARCO Model COM-llA

B-13 Receiver Audio Harmonic Distortion 30 Percent Modulation, B-13 NARCO Model COM-llA

B-14 Receiver Audio Harmonic Distortion 30 Percent Modulation, B-14 GENAVE Model ALPHA-lOO/360, Serial No. 43-22

B-i LIST OF ILLUSTRATIONS (Continued)

Figure Page

B-15 Receiver Modified Audio Harmonic Distortion 30 Percent B-15 Modulation, A/N Model GRR-23, Serial No. 4293

B-16 Receiver Data Link Audio Harmonic Distortion 80 Percent B-16 Modulation, King Model KTR-9~00A, Serial No. 2103

B-17 Receiver Data Link Audio Harmonic Distortion 80 Percent B-17 Modulation, Bendix Model RTA-43A, Serial No. 1027

B-19 Receiver Data Link Audio Harmonic Distortion 80 Percent B-19 Modulation, Modified Collins Model 6l8M-2B, Serial No. 2996

B-20 Receiver Data Link Audio Harmonic Distortion 80 Percent B-20 Modulation, Modified Collins Model 6l8M-2B, Serial No. 2971

B-21 Receiver Data Link Audio Harmonic Distortion 80 Percent B-2l Modulation, Collins Model 6l8M-2B, Serial No. 4868

B-22 Receiver Audio Harmonic Distortion 80 Percent Modulation, B-22 BUEC Model FA-8l9l, Serial No. 1

B-23 Receiver Audio' Harmonic Distortion 80 Percent Modulation, B-23 BUEC Model FA-8l9l, Serial No.2

B-24 Receiver Modified Audio Harmonic Distortion 80 Percent B-24 Modulation, King Model KY-195B, Serial No. 3145

B-25 Receiver Audio Harmonic Distortion 80 Percent, Modulation, B-25 King Model KY-195B, Serial No. 3145

B-26 Receiver Modified Audio Harmonic Distortion 80 Percent B-26 Modulation, NARCO Model COM-llA

B-27 Receiver Audio Harmonic Distortion 80 Percent Modulation, B-27 NARCO Model COM-llA

B-28 Receiver Audio Harmonic Distortion 80 Percent Modulation, B-28 GENAVE Model ALPHA-lOO/360, Serial No. 43-22

B-29 Receiver Modified Audio Harmonic Distortion 80 Percent B-29 Modulation, A/N Model GRR-23, Serial No. 4293

B-ii 35 r------,

"\fJ W 1000 jJ.V

~ 0 10 jJ.V

30 0---0230 mV

25

20 E-< Z kl U ~ kl p.., 15

10

5

OL...- ----L__--l.._--l.._...L.-....1-----I..-----L...... I..-L..- ---1__...... _----L_....L...-----I..----L.--'-~ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-6

FIGURE B-1. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, KING MODEL KTR-9100A, SERIAL NO. 2103

B-1 35r------,

~ W 1000 flY

G 810flV

30 0~-0 230 mV

25

20 E-I Z ~I U t:r:; j:ij P-. 15

10

OL­ ---L__---l.._---l.._..L...----L--.L---L...l-~_~:___L_=_____J.,._...:L____=:.L._...:L__.L....;L...... L...I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-7

FIGURE B-2. 'RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, BENDIX MODEL RTA-43A, SERIAL NO. 1050

B-2 35 r------, W W 1000 f.1V

30 0--0230 mV

25

15

10

5

1000 10,000 MODULATION FREQUENCY (Hz) 75-5-8

FIGURE B-3 .. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, BENDIX MODEL RTA-43A, SERIAL NO. 1027

B-3 35 r------, w ~ 1000 fiV

8 810fiV

30 (!)l---(!) 230 m V

25

OL------I__--L_--L_...1..-.....L...... L...... L...... L.-.L...- ----lL....-_---L_---L_...... L...... L...... 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-9

FIGURE B-4. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2996

B-4 35r------, 'fI ttl 1000 flY

@ f!) 10 flY

30 (i)1------G) 2 30mY

20

15

10

5

oL...- ----L__----L._----L._...L-...... L..---l...---l...... L-.l-- -.J'--_---L_---L_-I-----L.---L---L...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-10

FIGURE B-S. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971

B-S 35.------,

~ W 1000 tJ.V

EJ @ 10 tJ.V

30 0~-(!) 230 mV

25

15

10

5

0L.------lL....-_---L_----'-_...L---'------L.--'----L--'--- L...-_----L_----L_...... ­ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-11

FIGURE B-6. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, COLLINS MODEL 61BM-2B, SERIAL NO. 4868

B-6 35r------, w ~ 1000 fJ-V

G I!J 10fJ-V

30 @-~0 230 mV

25

20 E-< Z 'il u I:l::i 'il 0.. 15

10

5

0l-- --I.__---l-_---l-_...L.---l.....---l...... 1.-....I..-L..- ---J__--I-_---L_...l-----l...---L...... ~ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-12

FIGURE B-7. RECEIVER AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, BUEC MODEL FA-8191, SERIAL NO. I

B-7 35r------, ~ ~ 1000fJ.V

o (!) 10 fJ-V

30 0-----.0 230 m V

25

20

15

10

5

O ---I.__...... _----L._-'--...... -L---.L...... L-'-­ ----J..__---'-_--L-_.L..-....L-...... L.-...... , 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-13

FIGURE B-8 o RECEIVER AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, BUEC MODEL FA-8191, SERIAL NO. 2

B-8 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, Jor reference purposes ONLY, dUl' t(l receiver charactenstics taken lrulIl lelettor TP-410. 14r------==------.

'9 W1000 tJ.V G El10 tJ.V o 0230 mV 12

10

8

6

4

2

OL .L.._-.L_..L-L---L--...l...... l-~_=_------L--..L...----L-..L...-...L--..L.....J~ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-14

FIGURE B-9. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION. KING MODEL KY-195B, SERIAL NO. 3145

B-9 14 r------.------,

"fl W1000 I-lV G 010 I-lv (!) <:> 230 mV

12

10

8

6

4

2

a _ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-15

FIGURE B-10. RECEIVER AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, KING MODEL KY-195B, SERIAL NO. 3145

B-10 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY, due to receiver characteristics taken from OMNI output. 70 r------=------'-o

60

50

40

20

10

75-5-16

O'- L--_...l...-_L--...L-..l...-..L.JL.L..l...- ...L_---l.._...L---L---L.....LLJU 100 1000 10,000 MODIFICATION FREQUENCY (Hz)

FIGURE B-11. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 10 ~V INPUT, 30 PERCENT MODULATION, NARCO MODEL COM-1lA

B-ll NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY. due to receiver characteristics taken from OMNI output. 7_------,

"Vl '\'J 1000 IJ. V o 0 230 mV 6

5

4

3

2

1

OL...- ..L...-__..L...-_....L-_L.-....L-----'------'--....L...L...- ....L-__....L._----'--_...I..------'------L---L...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-17

FIGURE B-12. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 1000 ~V, 230 mV INPUT, 30 PERCENT MODUIATION, NARCO MODEL COM-1lA

B-12 35r------..,

'i¥ 'W 1000 fJ- V

30 0------0 230 m V

25

20 f-< Z ~ U Il:< ~ 0.. 15

10

5

01-­ ----L__----L_----L_.J...---..L..----L-l.---L-1....-_---=-_----I__----L_----L_...J.....--L-----L--..L...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-18

FIGURE B-13. RECEIVER AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, NARCO MODEL COM-llA

B-13 15 W W 1000 f.lV TO 20. 1 l!J l!J 10 f.lV

13 0 o 230 mV

11

7

5

3

1'------L--.....J-----L..-L----l...---l..-....L...L....J­ --L.__--..L._....L._L-..l..-....L.....l..-L.J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-19

FIGURE B-14. RECEIVER AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22

B-14 NOTE: Modified auxiliary wide band audio output. 35.------, W 'U 1000 flY

m G 10 flY

30 0--0230 mV

25

20 E-t Z ~ U 0:; ~ 15

10

1000 10,000 MODULATION FREQUENCY (Hz) 75-5-20

FIGURE B-IS. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 30 PERCENT MODULATION, A/N MODEL GRR-23, SERIAL NO. 4293

B-IS ~ ~ 1000I-lV

[:] c:::J 10 I-lV

30 0-----l0 230 m V

25

10

5

o1 0~0~---.L.------.l.-----I.-..L---.l...---L...L...I;1-;!0l.;;0~0------l.----.L-...L--1.-LLJLl...J 10,000 MODULATION FREQUENCY (Hz) 75-5-21

FIGURE B-16. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, KING MODEL KTR-9100A, SERIAL NO. 2103

B-16 40------, 9 W 1000 fJ.V

35 0----0 230 mV

30

15

10

5

OL ....L_----.l_---L-.l_L-JL.-L-'-..L­ --L-_----L_----L-.!_L-...IL...--I.~ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-22

FIGURE B-17. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, BENDIX MODEL RTA-43A, SERIAL NO. 1050

B-17 35 r---"T------. 'V 9 1000 fJ.V

EJ EJ 10fJ.V

30 0------0 230 m V

25

20 I~ :~ Iii U l~ Iii 11, 15

10

5

0 0~0;:----..L..------I-----l.---l...--.L-.L---l.-...11-0LOO----.L...----J----.l-...L....Y!::::r...... L..L::I 1 10,000 MODULATION FREQUENCY (Hz) 75-5-23

FIGURE B-l8. RECEIVER DATA LINK HARMONIC DISTORTION 80 PERCENT MODULATION, BENDIX MODEL RTA-43A, SERIAL NO. 1027

B-l8 35.------, . ~ "\'l 1000 IJ. V

30 0--"'0 230 mV

,25

20 E-t Z r.:l U IX< r.:l 0.. 15

10

5

0'-- -..L__---L._---L._...l...-....L...... L...... L.....L...L...- ---l__--1;._----I._....L...... L..-.L.....L.....L-J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-24

FIGURE B-19. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2996

B-19 35r------, VI VI 1000 fJ-V

8 [J 10fJ-V

30 0-----0 230 mV

5

0'--- ...... __ ~_ _'______'_____l_L...... J__L....L.._ 1...______'______'__ _"__....L..__l_....L....l._J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-25

FIGURE B-20. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 80 PERCENT MODUlATION, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971

B-20 35 rr------, '\;7 r::; 1000 !J. V

30 0--....0 230 mV

25

E-t 20 Z ~ u l:t:; ~ 0.. 15

10

5

OL- --.J.__----.L_----L_..L--L----L-LJ-L- ---.l.__--L._----l._...L.-.----L....J...... L...... L...I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-26

FIGURE B-2!. RECEIVER DATA LINK AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, COLLINS MODEL 61BM-2B, SERIAL NO. 4868

B-21 35 r------. W '\:l 1000f.l.V

30 0~-0 230 mV

5

0 0':-0:-----....I----...L.--...L.-...... J..-L...-L.-l--1--L..------L...--...L--...L--..J..-.L.-..L...-L.J~ 1 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-27

FIGURE B-22. RECEIVER AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, BUEC MODEL FA-8191, SERIAL NO. I

B-22 35~----,....------, '\7 \'J 1000 f.LV

[] 0 10 f.LV

30 0~--0 230 mV

25

20 f-t Z ~ U p:; ~ 0.. 15

10

5

Ol- ...... L__....L._....L....---l_L-.L-.~~~---.L...------!------!-....I.----L---L.....L.~ 100 1000 MODULATION FREQUENCY (Hz) 75-5-28

FIGURE B-23. . RECEIVER AUDIO HARMONIC DISTORTION 80 PERCENT MODUIATION, BUEC MODEL FA-8191, SERIAL NO. 2

B-23 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY, due to receiver characteristics taken from detector TP-410. 35------=.:..~~~~:...:....;:..:....--=.:::..:...:.------1 'V'---V/ 1000 IJ.V

8 G 10 IJ.V

o (;) 230 mV 30

25

20 Eo-< Z f.tl U 0::; f.tl 0­ 15

10

5

OL....-__.L-.._-L._--L--..L-1-1.....J...-:L:-J:-:-- ..L...-_---L._--L.----'-----'-----'-~~ 100 1000 MODULATION FREQUENCY (Hz) 75-5-29

FIGURE B-24. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, KING MODEL KY-195B, SERIAL NO. 3145

B-24 40,...------,------, TO 52 @ 200 'V'------~ 1000 J.L V

8 EJ 10 f-lV

35 01------'0 230 m V

30

25

15

10

5

OL...- ---I__----l-_----l-_....I...---L.---L.-L--L...I....­ ---'I--_---L_----L_....L---'-...... L...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-30

FIGURE B-25. RECEIVER AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, KING MODEL KY-195B, SERIAL NO. 3145

B-25 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY, due to receiver characteristics taken from OMNI output. 35r------""'T""'l.------.:.....-.------.

"V ~ 1000 IJ.V

30 o~--o 230 mV

25

20 I~ :2: 1:.:1 U I:!::; 1:.:1 11, 15

10

5

°lL...------L--....L..-....l..-----1-L-.L-L....I.---l...----.L.-----.l----l.-..l....-....l...... L....L.L..J OO 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-31

FIGURE B-26. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, NARCO MODEL COM-llA

B-26 14

TO 19@ 3000 VI rq 1000 f.lV

TO 32 @ 400 EJ El 10 f.lV TO 25 @ 400 12 0 0230 mV

10

8

6

4

2

0 O:-:O=-----....L..---.L--...L.-----I.-L..-l...-~l:-:-':--=------L--....l...--....l...------l-L-..l-L-L.J 1 000 10,000 MODULATION FREQUENCY (Hz) 75-5-32

FIGURE B-27. RECEIVER AUDIO HARMONIC DISTORTION 80 PERCENT MODUlATION, NARCO MODEL COM-ilA

B-27 80,..------...J-J..r------,

"fl "l 1000 f! V

[J [J 10 f!V 70 0f---0 230 mV

60

50

30

20

10

OL.-. ---L__---L._.....L...---JL....-..L.-...L-...L.....JL.....L. ~__.L...__'_____'_____'_____'___.._.. 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-33

FIGURE B-28. RECEIVER AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22

B-28 NOTE: Modified auxiliary wide band audio output. 35

~ ~ 1000 f.L V

lJ [] 10 f.LV

30 0 0 230 mV

25

20 E-< Z W U p:; W p.. 15

10

5

0 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-34

FIGURE B-29. RECEIVER MODIFIED AUDIO HARMONIC DISTORTION 80 PERCENT MODULATION, A/N MODEL GRR-23, SERIAL NO. 4293

B-29

APPENDIX C

PASS-BAND RECEIVER AUDIO 30/80 PERCENT MODULATION, NORMALIZED TO ZERO dB AT 1000 Hz LIST OF ILLUSTRATIONS

Figure Page

C-l Receiver Normalized Data Link Audio 30 Percent Modulation, C-l King Model KTR-9l00A, Serial No. 2103

C-2 Receiver Normalized Data Link Audio 30 Percent Modulation, C-2 Bendix Model RTA-43A, Serial No. 1050

C-3 Receiver Normalized Data Link Audio 30 Percent Modulation, C-3 Bendix Model RTA-43A, Serial No. 1027

C-4 Receiver Normalized Data Link Audio 30 Percent Modulation, C-4 Modified Collins Model 6l8M-2B, Serial No. 2996

C-5 Receiver Normalized Data Link Audio 30 Percent Modulation, C-5 Modified Collins Model 6l8M-2B, Serial No. 2971

C-6 Receiver Normalized Data Link Audio 30 Percent Modulation, C-6 Collins Model 6l8M-2B, Serial No. 4868

C-7 Receiver Normalized Audio 30 Percent Modulation, BUEC C-7 Model FA-8l9l, Serial No. 1

C-8 Receiver Normalized Audio 30 Percent Modulation, BUEC C-8 Model FA-8l9l, Serial No. 2

C-9 Receiver Normalized Modified Audio 30 Percent Modulation, C-9 King Model KY-195B, Serial No. 3145

C-lO Receiver Normalized Audio 30 Percent Modulation, King C-lO Model KY-195B, Serial No. 3145

C-ll Receiver Normalized Modified Audio 30 Percent Modulation, C-ll NARCO Model COM-llA

C-12 Receiver Normalized Audio 30 Percent Modulation, NARCO C-12 Model COM-llA

C-13 Receiver Normalized Audio 30 Percent Modulation, GENAVE C-13 ALPHA-lOO/360, Serial No. 43-22

C-14 Receiver Normalized Modified Audio 30 Percent Modulation, C-14 A/N Model GRR-23, Serial No. 4293

C-15 Receiver Normalized Data Link Audio 80 Percent Modulation, C-15 King Model KTR-9100A', Serial No. 2103

C-i LIST OF ILLUSTRATIONS (Continued)

Figure Page

C-16 Receiver Normalized Data Link Audio 80 Percent Modulation, C-16 Bendix Model RTA-43A, Serial No. 1050

C-17 Receiver Normalized Data Link Audio 80 Percent Modulation, C-17 Bendix Model RTA-43A, Serial No. 1027

C-18 Receiver Normalized Data Link Audio 80 Percent Modulation, C-18 Modified Collins Model 6l8M-2B, Serial No. 2996

C-19 Receiver Normalized Data Link Audio 80 Percent Modulation, C-19 Modified Collins Model 6l8M-2B, Serial No. 2971

C-20 Receiver Normalized Data Link Audio 80 Percent Modulation, C-20 Collins Model 6l8M-2B, Serial No. 4868

C-2l Receiver Normalized Audio 80 Percent Modulation, BUEC C-2l Model FA-8l9l, Serial No. 1

C-22 Receiver Normalized Audio 80 Percent Modulation, BUEC C-22 Model FA-8l9l, Serial No. 2

C-23 Receiver Normalized Modified Audio 80 Percent Modulation, C-23 King Model KY-195B, Serial No. 3145

C-24 Receiver Normalized Audio 80 Percent Modulation, King C-24 Model KY-195B, Serial No. 3145

C-25 Receiver Normalized Modified Audio 80 Percent Modulation, C-25 NARCO Model COM-llA

C-26 Receiver Normalized Audio 80 Percent Modulation, NARCO C-26 Model COM-llA

C-27 Receiver Normalized Audio 80 Percent Modulation, GENAVE C-27 Model ALPHA-lOO!360, Serial No. 43-22

C-28 Receiver Normalized Modified Audio 80 Percent Modulation C-28 A!N Model GRR-23, Serial No. 4293

C-ii 2

o

-2

-4

-6

-8

'J ':l 1000 f-lV

[] 8 10 f-lV -10 0 0 230 mV

-12 '-­ --....l .....l._----'-_...... ---L...... ---L...... --....lL-_.....l._----L_~...... __.. 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-35

FIGURE C-1. RECEIVER NORMALIZED DATA LINK AUDIO 30 PERCENT MODULATION, KING MODEL KTR-9100A, SERIAL NO. 2103

C-l 2

o • •

-2

-4

•

-8

\'J ~ 1000 f.L V c:J c:J 10 f.LV -10 0 0 230 mV

-12 "'"-- ...... __'--_"'----'-_'--"'-.l--J...... ---'-__---'-_---'-_...J-.-----L...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-40

FIGURE C-6. RECEIVER NORMALIZED DATA LINK AUDIO 30 PERCENT MODULATION, COLLINS MODEL 618M-2B, SERIAL NO. 4868

C-6 2 ...------,1!lt------..,

o

-2

-4

-6

-8

'\5' ~ 1000fJ.V

-10 o 0 230 mV

-12 ...... L..-__L...-_.L..-...... L_L...-.L...... a.....I...... L__~_...... L_.....L.._...... L___L__L--L-J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-41

FIGURE C-7. RECEIVER NORMALIZED AUDIO 30 PERCENT MODULATION, BEUC MODEL FA-8191, SERIAL NO. 1

C-7 2

o

-2

-4 r.n ...:1 ~ • .....o:l U ~ Cl -6

-8

V/--.s:;J 1000 I-l V

-10 o 0 230 mV

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-42

FIGURE C-8. RECEIVER NORMALIZED AUDIO 30 PERCENT MODULATION, BUEC MODEL FA-8191, SERIAL NO. 2

C-8 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY, due to receiver characteristics taken from detector TP-410. 2

o

-2

-4

-6

-8

\:7 Q 1000 f.LV

[] [J 10 f.LV -10 0 0 230 mV

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-43

FIGURE C-9. RECEIVER NORMALIZED MODIFIED AUDIO 30 PERCENT MODULATION, KING MODEL KY-195B, SERIAL NO. 3145

C-9 2

l---f;(! 1000 fJ-V

o

~-0 230 mV

-2

-4

-6

-8

-10 •

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-44

FIGURE C-10. RECEIVER NORMALIZED AUDIO 30 PERCENT MODULATION, KING MODEL KY-195B, SERIAL NO. 3145

C-IO NOTE: A modificationwas used in the test setup to provide this "typical" shaped curve, for reference purpos es ONLY, due to receiver characteristics taken from OMNI output. 2

o

-2

-4

-6

-8

W ~ 1000 fiV

G 8 10 fiV -10 0 0 230 mV

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-45

FIGURE C-ii. RECEIVER NORMALIZED MODIFIED AUDIO 30 PERCENT MODULATION NARCO, MODEL COM-ilA

C-ll 10 'Yl VI 1000 fJ-V 8--8 10 fJ-V

5 0 0 Z30 mV

o

-5 ~ ~ .....o:l U ~ Cl -10

-15

-20

-25 '-- ---'__--'-_---L._...L..-...... L...... L...... L...... 1-.L.... ---'__----L_----L_....L...... L...... L-L....L...l 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-46

FIGURE C-12. RECEIVER NORMALIZED AUDIO 30 PERCENT MODULATION, NARCO MODEL COM-IlA

C-12 4

~ VJ 1000 f.1v 8 8 10 f.1V 2 0 0 230 mV

o

-6

-8

-1 0 ::-::- .....L..J;M--_u::a:;Ll._...L.-....L-...l..-.J...... JL...L L-_---L."'O:~__l._LJL.l__U 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-47 FIGURE C-13. RECEIVER NORMALIZED AUDIO 30 PERCENT MODULATION, GENAVE ALPHA-IOO/360, SERIAL NO. 43-22

C-13 NOTE: Modified auxiliary wide band 2r------,audio output

o

-2

-4

-6

-8

\:l ~ 1000 fiV

-10

o 0 230 mV

-12 ~----L...----l--L...-.....L..---J'--L..-...... ".....L..----.....L..--.....L..-.....L..-..I...... L..-.L..~- 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-48

FIGURE C-14. RECEIVER NORMALIZED MODIFIED AUDIO 30 PERCENT MODULATION, A/N MODEL GRR-23, SERIAL NO. 4293

C-14 2,.------,

o •

-2

-4

-6

-8

'\'J \'l 1000 flV

-10 8 0 10 flV

0 0 230 mV

-12 LO----..L---.l--l-.....L...... L---L-.L-="I":'OO!:-O::-----...l.----I----J-...L-...... L...... L..~~ 10 MODULATION FREQUENCY (Hz) 75-5-49

FIGURE C-lS. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION, KING MODEL KTR-9100A, SERIAL NO. 2103

C-lS 2

a • •

-2

-4 V) ...:1 ~ • ....P=l U ~ 0 -6

-8 •

'\:i' 'iJ 10aa f! v -10

<:> 0 230 mV

-12 1­ ---I__---L_---L_...... L...... L...... L....L....L­ L..-_---l_---l_....L...... L--I.---L-L...J 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-50 FIGURE C-16. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION. BENDIX MODEL RTA-43A. SERIAL NO. 1050

C-16 2

o • • • •

-2

-4 (/) .....:l ~ ...... CO U ~ Cl -6 •

-8 •

\-} ~ 1000 fJ-V -10 El [J 10 fJ-V

0 0 230 mV

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-51 FIGURE C-17. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION, BENDIX MODEL RTA-43A, SERIAL NO. 1027

C-17 2 ...... ------,

• • • • •

-8

'" 'f7 1000 jJ.V -10 [!} [!J 10 jJ.V

(!) (i) 230 mV

-12 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-52

FIGURE C-18. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION. MODIFIED COLLINS MODEL 61SM-2B. SERIAL NO. 2996

C-18 2,------.

o

-2

-4 (f) ....:l ~ ~ ...... U ~ Cl -6

-8

~ ~ 1000 f!V

-10 @ @ 230 mV

-12 L....- ----I__----L._---L_....l..-.....J...--L.....J...... J...... L..- l....-_-----l_----I_...J....---L----l.--L~ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-53 FIGURE C-19. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION, MODIFIED COLLINS MODEL 61SM-2B, SERIAL NO. 2971

C-19 2 ...... ------,

o

-2

-4 ~ ~ ...... 0:1 U ~ Cl .6 •

-8

'f' ~ 1000 fJ-v

-10 @~-(!) 230 mV

- 12 '-­ ...... __...... _ ...... ----'_.1.-...&....-...... '--'- ....L...­__'------''--...... ---'-...... ---'-...... 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-54

FIGURE C-20. RECEIVER NORMALIZED DATA LINK AUDIO 80 PERCENT MODULATION, COLLINS MODEL 618M-2B, SERIAL NO. 4868

C-20 2,....------,

-8

'fl ~ 1000 fJ-V

-10 @....--@230mV

-12 L­ ----L__--L_...L-l_.L-.L-L....l-L ...L-_----.JL-----I_---L----l..--L--L....J...J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-55

FIGURE C-2l. RECEIVER NORMALIZED AUDIO 80 PERCENT MODULATION. BUEC MODEL FA-8l91, SERIAL NO. 1

C-21 2,....------,

a

-2

U) ...l ~l ....r:q U ~l Cl -6

-8 ~ '07 1000 fl.V

(!)--.....(!) 2 30 rnV -10

- 12L-- ---I.__----L._----L_...1..----L..---L.---L...... L...L..- ----JL--_---I._---I._....L..----L.----L----L...... 100 1000 10. 000 MODULATION FREQUENCY (Hz) 75-5-56

FIGURE C-22. RECEIVER NORMALIZED AUDIO 80 PERCENT MODULATION, BUEC MODEL FA-8191, SERIAL NO. 2 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY, due to receiver characteristics taken from detector TP-410. 2r------.::..:...;~.....=.:~..:..:..::....:...... :..:.---.:..:..:.=------____,

•

• -8

~ ~ 1000 fJ.V -10 @ I!l 10 fJ.V

® G> 230 mV

-12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-57

FIGURE C-23. RECEIVER NORMALIZED MODIFIED AUDIO 80 PERCENT MODUlATION, KING MODEL KY-195B, SERIAL NO. 3145

C-23 2r------. ~ ~ 1000 I-lV

o G>~-(!) 230 mV

-2

-4 U) ....:l ~ ...... 111 U ~ Cl -6

-8

-10

-12 l....- ---J__--I..._--I..._....L...-----L.--L----L.....L...... ---JL...-_--1_-1._....L...---'---L.-L....J....J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-58

FIGURE C-24. RECEIVER NORMALIZED AUDIO 80 PERCENT MODULATION, KING MODEL KY-195B~ SERIAL NO. 3145

C-24 NOTE: A modification was used in the test setup to provide this "typical" shaped curve, for reference purposes ONLY. due to receiver characteristics taken 2r------=------.from OMNI output.

o

-2

-4

-8

"i' ~ 1000 f!V

10 f! V -10 Gll----Gl

(!) 230 mV

-12 "--­ ...... __.L-.._...... --I._...... L...... L...-.L...... L ---I__--L_---I_....J...---I_L....JL..-..L...J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-59

FIGURE C-25. RECEIVER NORMALIZED MODIFIED AUDIO 80 PERCENT MODULATION, NARCO MODEL COM-IlA

C-25 10 r------,

'f' If' 1000 I-lV

5 (!)I----(!) 2 3a Inv

a

-15

-20

- 25 ...... ----''---_---l._---l._...... L..----L.----L--L....L....I.­ .l....-_---J_---J_....L...... L--l...... L...... L..I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-60

FIGURE C-26. RECEIVER NORMALIZED AUDIO 80 PERCENT MODUlATION, NARCO MODEL COM-IIA

C-26 4r------.

"iI 'i' 1000 f! V

2 (!) (i) 230 mV

o

-2 til ...:I ~ .....~ u ~ Cl -4

-6

-8

-10 ~O=__--..I3IIIil-~...... L...-....I----l.----l----l--l--L..L----...... L--.L.---.JlIIl..:~....l...-L...LLJ 1 O 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-61

FIGURE C-27. RECEIVER NORMALIZED AUDIO 80 PERCENT MODUlATION, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22

C-27 NOTE: Modified auxiliary wide band 2r------=------.audio output.

•

-8

~ 'V 1000 fJ-V

-10 G> G> 230 mV

-12 L..- ---l.__--1..._....L.----JL-...L..-..L...J...... JL.L ..l..-__L-_L-....L---l.---l.....l....LJ 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-62

FIGURE C-28. RECEIVER NORMALIZED MODIFIED AUDIO 80 PERCENT MODULATION, A/N MODEL GRR-23, SERIAL NO. 4293

C-28 APPENDIX D

PHASE DELAY RECEIVER AUDIO LIST OF ILLUSTRATIONS

Figure Page

D-l Receiver Data Link Audio Delay, King Model KTR-9l00A, D-l Serial No. 2103

D-2 Receiver Data Link Audio Delay, Bendix Model RTA-43A, D-2 Serial No. 1050

D-3 Receiver Data Link Audio Delay, Bendix Model RTA-43A, D-3 Serial No. 1027

D-4 Receiver Data Link Audio Delay, Modified Collins Model D-4 6l8M-2B, Serial No. 2996

D-5 Receiver Data Link Audio Delay, Modified Collins Model D-5 6l8M-2B, Serial No. 2971

D-6 Receiver Data Link Audio Delay, Collins Model 6l8M-2B, D-6 Serial No. 4868

D-7 Receiver Audio Delay, BUEC Model FA-8l9l, Serial No. 1 D-7

D-8 Receiver Audio Delay, BUEC Model FA-8l9l, Serial No. 2 D-8

D-9 Receiver Modified Audio Delay, King Model KY-195B, D-9 Serial No. 3145

D-IO Receiver Modified Audio Delay, NARCO Model COM-llA D-IO

D-ll Receiver Audio Delay, GENAVE Model ALPHA-lOO/360, D-ll Serial No. 43-22

D-12 Receiver Modified Audio Delay, A/N Model GRR-23 , D-12 Serial No. 4293

D-i 250 1 I

200

150

UJ Cl 100 Z 0 u ~ ~ t:l I ~ ~ ~ 50 ::E

o

-50

75-5-64

-100 I I I I I I I I I I I I I I I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) FIGURE D-1. RECEIVER DATA LINK AUDIO DELAY, KING MODEL KTR-9100A, SERIAL NO. 2103 150 • i

100

50

U) Clz a 0u ~ U) 0 p:; t::' U I -50 N :i

-100

-150

- 200'100 I I I I I I I I I I I I I I I I I I 1000 10.000 MODULATION FREQUENCY (Hz)

FIGURE D-2. RECEIVER DATA LINK AUDIO DELAY, BENDIX MODEL RTA-43A. SERIAL NO. 1050 250 r------l'

200

150

Ul Cl 100 Z 0 U ~ Ul 0 &:r: l::::l U I 50 W ~

o

-50

-100 I I I I II I I , , I I I I I I , , , 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-66

FIGURE D-3. RECEIVER DATA LINK AUDIO DELAY, BENDIX MODEL RTA-43A, SERIAL NO. 1027 250, I

200

150

(J) Cl 100 Z 0 U '..:I (J) 0 t:l 0:; I U ~ 50 ~

o

-50

-100' I I 1'1 I I I I I I I I I I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-67 FIGURE D-4. RECEIVER DATA LINK AUDIO DELAY, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971 100 1------ll

50

o

Vl Cl -50 oZ U W oVl p:; t::I I VI ~ -100 ::E

-150

-200

-250' I I I I I I I 1 I I 1 I 1 I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-68 FIGURE D-5. RECEIVER DATA LINK AUDIO DELAY, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2996 250 rl ------­I

200

150

U) Cl 100 ~ 0 U ~ U) 0 0 I IX< (TI U 50 ~

o

-50

-100 I I I I I I I I I I I I I I I I I I I

100 1000 'A A MODULATiON FREQUENCY (Hz) FIGURE D-6. RECEIVER DATA LINK AUDIO DELAY, COLLINS MODEL 61BM-2B, SERIAL NO. 4868 250. I

200

150

t/) Cl 100 Z 0 U ~ t/) 0 t:l P:: U ...... • 50 ~

o

-50

-100 I I I I ", , I I I I " I , I , I I , 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-70 FIGURE D-7. RECEIVER AUDIO DELAY, BUEC MODEL FA-8191, SERIAL NO. I 250' i

200

150

U) 0 100 Z 0 U ~ U) 0 p:; '=' I U...... 50 00 ~

o

-50

I I I r I I I I I I I I I I I I I I -100100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-71

FIGURE D-8. RECEIVER AUDIO DELAY, BUEC MODEL FA-8191, SERIAL NO.2 200 .-I ------ll

150

100

U) 0 Z 50 0 U ~ U) 0 t::l p:: I U \0 0 ~

NOTE: A modification was used in the test -50 setup to provide this "typical"-shaped curve, for reference purposes ONLY, due to receiver characteristics taken from detector TP-410.

-100

-1501 I I f I I I I I I I I I I I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-72 FIGURE D-9. RECEIVER MODIFIED AUDIO DELAY, KING MODEL KY-195B, SERIAL NO. 3145 ZOO, I

150

100

U) Q 50 oZ u ~ NOTE: A modification was used in the test U) o setup to provide this "typical" shaped o 0:: curve, for reference purposes ONLY, I U ...... ~ o due to receiver characteristics taken o ~ from OMNI output.

-50

-100

-150100' " I I I I I I I I I I I I I I I I 1000 MODULATION FREQUENCY (Hz) 75-5-73 FIGURE D-IO. RECEIVER MODIFIED AUDIO DELAY, NARCO MODEL COM-llA ISO, I

100

50

U) a Clz 0 u ~ U) 0 0 c:; ....l U -50 .... ~

-100

-150

-200 I I I I I I I I I I I I I I I I I I , 100 1000 la, 000 MODULATION FREQUENCY (Hz) 75-5-74

FIGURE D-ll. RECEIVER AUDIO DELAY, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22 ------~ 250 f' I

200

150

til Cl 100 Z 0 U ~ til 0 t:! p:; I .... U 50 N ~

o

-50

-100 ' 'I' I I I , I I I" I , I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-75 FIGURE D-12. RECEIVER MODIFIED AUDIO DELAY, A/N MODEL GRR-23, SERIAL NO. 4293 APPENDIX E

PASS-BAND TRANSMITTER AUDIO NORMALIZED TO ZERO dB AT 1000 Hz LIST OF ILLUSTRATIONS

Figure Page

E-l Transmitter Normalized Data Link Audio, King Model E-l KTR-9l00A, Serial No. 2193

E-2 Transmitter Normalized Data Link Audio, Bendix Model E-2 RTA-43A, Serial No. 1050

E-3 Transmitter Normalized Data Link Audio, Bendix Model E-3 RTA-43A, Serial No. 1027

E-4 Transmitter Normalized Data Link Audio, Modified Collins E-4 Model 6l8M-2B, Serial No. 2996

E-5 Transmitter Normalized Data Link Audio, Modified Collins E-5 Model 6l8M-2B, Serial No. 2971

E-6 Transmitter Normalized Data Link Audio, Collins Model E-6 6l8M-2B, Serial Number 4868

E-7 Transmitter Normalized Audio, BUEC Model FA-8l9l, E-7 Serial No. 1

E-8 Transmitter Normalized Audio, BUEC Model FA-8l9l E-8 Serial No. 2

E-9 Transmitter Normalized Audio, King Model KY-195B, E-9 Serial No. 3145

E-IO Transmitter Normalized Modified Audio, NARCO Model E-IO COM-l1A

E-ll Transmitter Normalized Audio, NARCO Model COM-l1A E-ll

E-12 Transmitter Normalized Audio GENAVE ALPHA-lOO/360 E-12 Serial No. 43-22

E-13 Transmitter Normalized Audio, A/N Model GRT-2l, E-13 Serial No. 379

E-14 Transmitter Normalized Modified Audio, TV-36 , E-14 Serial No. 1349

E-i 2 I I

o

-2

-4 ~ W ....~ U W t>:l Cl ....I -6

-8

-10

-12 , I I I I I I I I I I I I I I I I I \ I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-78 FIGURE E-1. TRANSMITTER NORMALIZED DATA LINK AUDIO, KING MODEL KTR-9100A, SERIAL NO. 2193 1

o

-1

-3

-5

-7

-9

-11

-1 3 1L-----..I.----L.---L.-..l...----L-L---L....L...L------.J------I.-----I.-....L..-L---L.-7-:!0--:..000 100 1000 1 MODULATION FREQUENCY (Hz) 75-5-79 FIGURE E-2. TRANSMITTER NORMALIZED DATA LINK AUDIO, BENDIX MODEL RTA-43A, SERIAL NO. 1027

E-2 2 I I

o

-2

-4 ~ ~ :9 u )l ~ w Cl -6

-8

-10

, '" I I I I I I I I I I I I I I I -12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-80 FIGURE E-3. TRANSMITTER NORMALIZED DATA LINK AUDIO, BENDIX MODEL RTA-43A, SERIAL NO. 1027 2 i ,

o

-2

.4 j l.il p:j ...... U l.il t'CI Cl I ~ -6

-8

-10

I I I I I I I I , I I I I I I I I I , -12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-81

FIGURE E-4. TRANSMITTER NORMALIZED DATA LINK AUDIO, MODIFIED COLLINS MODEL 618M 2B, SERIAL NO. 2YYb 2 I i

o

-2

-4 :3 ~ ~ U t

-8

-10

-12 I I I , , , I , I I I I I I I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-82

FIGURE E-5. TRM~SMITTER NORMALIZED DATA LINK AUDIO, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971 2 I I

o

-2

-4 ~ W ....o::l U t'1 W I c;r. Cl -6

-8

-10

-12 ' I I I I I I I I 1 I I I I I I I I I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-83 FIGURE E-6. TRANSMITTER NORMALIZED DATA LINK AUDIO. COLLINS MODEL 618M-2B. SERIAL NUMBER 4868 4 I I

o

-4

UJ -8 ...:l ~ ....~ U T ~ "'-J c:l -12

-16

-20 CONTROL FREQUENCY 2423 Hz

/

-24 I «I I I I I I I , I , I I I , , I I , , 100 1000 10,000 MODULATION FREOUENCY (Hz) 75-5-84 FIGURE E-7. TRANSMITTER NORMALIZED AUDIO, BUEC MODEL FA-8191, SERIAL NO.1 4 I I

o

-4

-8 U) ..-1 ~ .....~ U ~ t:l )l -12 00

-16

-20 CONTROL FREQUENCY / = 2423 Hz

I I I I I I I I I I I I I I I I I I I I -24 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-85

FIGURE E-8. TRANSMITTER NORMALIZED AUDIO, BUEC MODEL FA-8191 SERIAL NO.2 5

o

-5

~ -10 W ol!l oW tzl I -15 \0

-20

-25

-30 1 I I I I I I I I I I I . I I I I I I , 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-86

FIGURE E-9. TRANSMITTER NORMALIZED AUDIO, KING MODEL KY-195B, SERIAL NO. 3145 NOTE: Coupling capacitor (C430) changed 2r------,from 10 IJ.F to O. 5 IJ.F.

o

-2

-4 U) H W l:Q ...... U W q -6

-8

-10

-12 '-- '--_--''--_'-----'-_L...-.L..-...... --L.__.....I-_--L._...... --L...... , 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-87 FIGURE E-iO. TRANSMITTER NORMALIZED MODIFIED AUDIO, NARCO MODEL COM-iiA

E-iO a

-5

- -15

- 2 a '-- J....--_-----J'--_J....-----l...-----J'---'--L.-J'--'- ---'-__---'-_---l..._--'-----'-----'---'-"L--L...... I 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-88 FIGURE E-ll. TRANSMITTER NORMALIZED AUDIO, NARCO MODEL COM-IIA

E-ll o

-5

U) ...::l ~ S -10 U ~ o

-15

-20

100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-89

FIGURE E-12. TRANSMITTER NORMALIZED AUDIO GENAVE ALPHA-100/360, SERIAL NO. 43-22

E-12 2 I I

o

-2

-4 j w is tz:I u I W ...... 0 w -6

-8

-10

I I I I IIII I I I I I II I I I I -12 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-90 FIGURE E-13. TRANSMITTER NORMALIZED AUDIO, A/N MODEL GRT-21, SERIAL NO. 379 NOTE: C-303 changed to 0.005 fJ.F. L-301 changed to 0.1 fJ.F. 2. 5 ~------,

o

-2. 5

-5. 0

-7. 5

-10. 0

-12. 5

_15. 0 '--__---L.._---L_...L.-.....L...... L.....L...IL.....L...L...-__---L_----I_....L...... L...... L...... L...L....L..I 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-91

FIGURE E-14. TRANSMITTER NORMALIZED MODIFIED AUDIO, TV-36, SERIAL NO. 1349

E-14 APPENDIX F

HARMONIC DISTORTION TRANSMITTER AUDIO LIST OF ILLUSTRATIONS

Figure Page

F-l Transmitter Data Link Audio Harmonic Distortion, F-l King Model KTR-9l00A, Serial No. 2103

F-2 Transmitter Data Link Audio Harmonic Distortion, F-2 Bendix Model RTA-43A, Serial No. 1050

F-3 Transmitter Data Link Audio Harmonic Distortion, F-3 Bendix Model RTA-43A, Serial No. 1027

F-4 Transmitter Data Link Audio Harmonic Distortion, F-4 Modified Collins Model 6l8M-2B, Serial No. 2996

F-5 Transmitter Data Link Audio Harmonic Distortion, F-5 Modified Collins Model 6l8M-2B, Serial No. 2971

F-6 Transmitter Data Link Audio Harmonic Distortion, Collins F-6 Model 6l8M-2B, Serial No. 4868

F-7 Transmitter Audio Harmonic Distortion, BUEC Model F-7 FA-8l9l, Serial No. 1

F-8 Transmitter Audio Harmonic Distortion, BUEC Model F-8 FA-8l9l, Serial No.2

F-9 Transmitter Audio Harmonic Distortion, King Model F-9 KY-195B, Serial No. 3145

F-IO Transmitter Modified Audio Harmonic Distortion, NARCO F-IO Model COM-llA

F-ll Transmitter Audio Harmonic Distortion, GENAVE Model F-ll ALPHA-lOO/360, Serial No. 43-22

F-12 Transmitter Audio Harmonic Distortion, A/N Model F-12 GRT-2l, Serial Number 379

F-13 Transmitter Modifiee Audio Harmonic Distortion, TV-36, F-13 Serial No. 1349

F-i 14

12

10

8 f-< Z ~ U p:; I 80% MODULATION '::I ~ I 0.. I-' 6

4

2 30% MODULATION

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-93 FIGURE F-1. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORTION, KING MODEL KTR-9100A, SERIAL NO. 2103 7r------,

6

4

3

2

OI....- ---J__----L_----L_....L...---L.---L--L.....L....L...- l...-_---J_---J_....L..---L---L---L.....1....J 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-94 FIGURE F-2. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORTION, BENDIX MODEL RTA-43A, SERIAL NO. 1050

F-2 14

12

10

8 f-< Z ~ U p:: ~ '? 0.. w 6

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-95 FIGURE F-3. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORTION, BENDIX MODEL RTA-43A, SERIAL NO. 1027 14

12

10

8 E-< Z W U p:; W 0.. or 6 .l'­

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-96 FIGURE F-4. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORLION, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2996 14

12

10

8 E-< ;z; ~ u ""~ 1 0.. 6 \n

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-97 FIGURE F-5. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORT:ON, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971 14

12

10

8 Eo< Z ~ l) P:< I'Zj ~ I 0.. 0\ 6

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-98 FIGURE F-6. TRANSMITTER DATA LINK AUDIO HARMONIC DISTORTION, COLLINS MODEL 61BM-2B. SERIAL NO. 4868 14

12

10

8 E-< Z ~ U 0:: t'%j ~ I ...... 0.. 6

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-99 FIGURE F-7. TRANSMITTER AUDIO HARMONIC DISTORTION, BUEC MODEL FA-BI91, SERIAL NO. I 14

12

10

8 Eo< Z ~ u p:; "'l ~ I (Xl 0.. 6

4

2

o 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-100 FIGURE F-8. TRANSMITTER AUDIO HARMONIC DISTORTION, BUEC MODEL FA-8191, SERIAL NO. 2 14

12

10

8

6

4

2

o 1O....O:-----...... --"'----"'------'------J'---.L...... JL...... LO-O....O------'----..L---....L...---L-L..-"'---lL..O....,-'O0 0 1 MODULATION FREQUENCY (Hz) 75-5-101 FIGURE F-9. TRANSMITTER AUDIO HARMONIC DISTORTION, BUEC MODEL FA-8191, SERIAL NO. 3145

F-9 NOTE: Coupling capacitor (C430) changed from 10 fJ-F to 0.5 fJ-F. 14

12

10

8

6

4

2

o 100 1000 10.000 MODULATION FREQUENCY (Hz) 75-5-102

FIGURE F-IO. TRANSMITTER MODIFIED AUDIO HARMONIC DISTORTION, NARCO MODEL COM-llA

F-IO 14 r------....,

.12

10

80% MODULATION

8 / E-< Z j:.Ll u p:; j:.Ll p.. 6

4

2 30% MODULATION

1000 10,000 MODULATION FREQUENCY (Hz) 75-5-103 FIGURE F-ll. TRANSMITTER AUDIO HARMONIC DISTORTION, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22

F-ll 14

12

10

8 E-< Z ~ l) c:; ~ 0'Zj Po. ....I 6 I'.)

4

2

o 100 1000 MODULATION FREQUENCY (Hz) 75-5-104 FIGURE F-12. TRANSMITTER AUDIO HARMONIC DISTORTION, A/N MODEL GRT-21, SERIAL NUMBER 379 NOTE: C-303 changed to 0.005 fiFo L-301 changed to O. 1 fiFo 35 r""r."------....::.------.

30 T037@100

25

10

5

0'--__-.l1....-_...L.----I._.l..-..l..-.L-L..1-L..­ __---I__.l---L_L-L...JL.....L...L.J 100 1000 10.000 MODU LATION FREQUENCY (Hz) 75-5-105 FIGURE F-13. TRANSMITTER MODIFIED AUDIO HARMONIC DISTORTION, TV-36 , SERIAL NO. 1349

F-13 APPENDIX G

PHASE DELAY TRANSMITTER AUDIO LIST OF ILLUSTRATIONS

Figure Page

G-1 Transmitter Data Link Audio Delay, King Model KTR-9100A G-1 Serial No. 2103

G-2 Transmitter Data Link Audio Delay, Bendix Model G-2 RTA-43A, Serial No. 1050

G-3 Transmitter Data Link Audio Delay, Bendix Model G-3 RTA-43A, Serial No. 1027

G-4 Transmitter Data Link Audio Delay, Modified Collins G-4 Model 618M-2B, Serial No. 2996

G-5 Transmitter Data Link Audio Delay, Modified Collins G-5 Model 618M-2B, Serial No. 2971

G-6 Transmitter Data Link Audio Delay, Collins Model 618M-2B, G-6 Serial No. 4868

G-7 Transmitter Audio Delay, BUEC Model FA-8191, Serial No.1 G-7

G-8 Transmitter Audio Delay, BUEC Model FA-8191, Serial No. 2 G-8

G-9 Transmitter Audio Delay, King Model KY-195B, G-9 Serial No. 3145

G-10 Transmitter Modified Audio Delay, NARCO Model COM-1lA G-lO

G-11 Transmitter Audio Delay, GENAVE Model ALPHA-100/360, G-ll Serial No. 43-22

G-12 Transmitter Audio Delay, A/N Model GRT-21, Serial No. 379 G-12

G-13 Transmitter Modified Audio Delay, TV-36, Serial No. 1349 G-13

G-i 100 I I

50

a

r.J) 1:1:z: -50 o u ~ or.J) C) 0:: .....I U -100 ~

-150

-200

-250 I I I I I I I I I I I I I I I I I I I , 100 1000 10,000 FREQUEl\CY (Hz) 75-5-107 FIGURE G-1. TRANSMITTER DATA LINK AUDIO DELAY, KING MODEL KTR-9100A, SERIAL NO. 2103 100 I I

50 I­

01­

~ -50 I­ oZ u ~ oCfJ ? p:; N ~ .100 I­ ::E

-150 I­

-200 I­

-250 I I I I I I I ! I I I I I I I I I ! I 100 1000 10,000 FREQUENCY (Hz) 75-5-108 FIGURE G-2. TRANSMITTER DATA LINK AUDIO DELAY, BENDIX MODEL RTA-43A, SERIAL NO. 1050 100 I I

50

a

Z3 -50 oZ U r..l Ul c;') o I 0: W U..... -100 ~

-150

-200

-250' " I I I I I I I " I I I I , , , 100 1000 10, 000 FREQUEr\CY (Hz) 75-5-109 FIGURE G-3. TRANSMITTER DATA LINK AUDIO DELAY, BENDIX MODEL RTA-43A, SERIAL NO. 1027 100 , I

50

o

U) Q -50 oZ U ~ U) (j) o I a:; .po ...... U .100 ~

-150

-200

-250 • '" 1« I , , , , "" , I , , , 100 1000 10,000 FREQUENCY (Hz) 75-5-11 0 FIGURE G-4. TRANSMITTER DATA LINK AUDIO DELAY, MODIFIED COLLINS MODEL 61BM-2B, SERIAL NO. 2996 250, I

200

150

is 100 Z 0 u ~ U) c;"') 0 I A:: \Jl U ..... 50 :E

o

-50

-100 I I I I I I I I I I I I I I I I I I I I 100 1000 10,000 FREQUE":CY (Hz) 75-5-111 FIGURE G-5. TRANSMITTER DATA LINK AUDIO DELAY, MODIFIED COLLINS MODEL 618M-2B, SERIAL NO. 2971 100 I I

50

o

U) o -50 oZ U ~ cg G'), Cl:: Cl' U -100 ~

-150

-200

-250 , I I r I , I , I , I I J I I I , I I 100 1000 10,000 FREQUENCY (Hz) 75-5-112 FIGURE G-6. TRANSMITTER DATA LINK AUDIO DELAY, COLLINS MODEL 618M-2B, SERIAL NO. 4868 600-,------,

450

300

~ 150 Z 0 U 'il (J) 0 p:; c;') U , ...... 0 " ::E

-150

-300

-450, I I , ! , I , I I I I I I , , I , I 100 1000 10,000 FREQUEt-lCY (Hz) 75-5-113 FIGURE G-7. TRANSMITTER AUDIO DELAY, BUEC MODEL FA-8191, SERIAL NO. I 600. I

450

300

til Cl Z 150 0 U ~ til 0 ~ C1 I U.... 0 co ::E

-150

-300

-450, I I I I I I I I I I I I I I I I I I 100 1000 10,000 FREQUENCY (Hz) 75-5-114 FIGURE G-8. TRANSMITTER AUDIO DELAY, BUEC MODEL FA-8191, SERIAL NO.2 100 .------1'

50

a

~ -50 oZ L) "l en C') o I p:; ~ L) -100 ~

-150

-200

-250! I I I I I I I I I I I I I I I I I I 100 1000 la, 000 FREQCc-:NCY (Hz) 75- 5-115 FIGURE G-9. TRANSMITTER AUDIO DELAY, KING MODEL KY-195B, SERIAL NO. 3145 ------~~_;;::~==:;;~-----~:::::::::::::;:aoo;::;OOO 100 r", NOTE: Coupling capacitor (C430) changed ...--.<:':::::==------l' from 10 fJ-F to 0.5 fJ-F.

50

o

U) Cl -50 Z o U iii U) o p::; ? ~ -100 ot-' ~

-150

-200

-250 , I, I I ,'" I I I I I I I , I I I I 100 1000 10,000 FREQUENCY (Hz) 75-5-116 FIGURE G-IO. TRANSMITTER MODIFIED AUDIO DELAY, NARCO MODEL COM-IIA 100.------l'

50

o

i3 -50 oZ U W U) C) o I I:l: t-' ~ -100 t-' :::E

-150

-200

-250 I I' I 'II I I I I I "I I I I I , I 100 1000 10,000 FREQUENCY (Hz) 75-5-117 FIGURE G-ll. TRANSMITTER AUDIO DELAY, GENAVE MODEL ALPHA-IOO/360, SERIAL NO. 43-22 250 f'------.,

200

150

~ 100 Z 0 U ~ til c;') 0 , ~ t-' U N 50 -:::E

o

-50

.100, ,I, I I I I I I I I I I I I I I I 100 1000 10,000 FREQUENCY (Hz) 75-5-118 FIGURE G-12. TRANSMITTER AUDIO DELAY, A/N MODEL GRT-21, SERIAL NO. 379 NOTE: C-303 changed to 0.005 fJ-F. L-301 changed to O. 1 fJ-F. 75 r------,

• • •

o

-75

U) o -150 oZ o ~ U)o ~ o -225 ~ ~

-300

-375

- 4 50 '--__.....J,__L...-...Qil.--L...... L--L.....L..JL...L.. ..J-.._-.l..._L.-...J.-...L-.L....1....1...1 100 1000 10,000 MODULATION FREQUENCY (Hz) 75-5-1 1 9

FIGURE G-13. TRANSMITTER MODIFIED AUDIO DELAY, TV-36, SERIAL NO. 1349

G-13