Technical Handbook for Radio Monitoring HF
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Elecraft Kx3 Ultra-Portable 160-6 Meter, All-Mode Transceiver
ELECRAFT KX3 ULTRA-PORTABLE 160-6 METER, ALL-MODE TRANSCEIVER OWNER’S MANUAL [PRELIMINARY] Revision XH, March 3, 2012 Copyright © 2012, Elecraft, Inc. All Rights Reserved Contents Introduction...................................................3 SSB/CW VFO Offset .......................................... 21 Key to Symbols and Text Styles............................3 Digital Voice Recorder (DVR)........................... 21 Installation ....................................................4 Transmit Noise Gate ........................................... 21 Transmit Inhibit................................................... 21 Operating Position..................................................4 Cross-Mode Operation........................................ 21 Power Supply .........................................................4 Transverter Bands ............................................... 21 CW Key / Keyer Paddle.........................................4 Special VFO B Displays ..................................... 22 Headphones and Speakers......................................5 Extended Single Sideband (ESSB)..................... 22 Microphone ............................................................5 Options and Accessories.............................. 23 Computer/Control Port (ACC1) ............................5 Keyline Out and GPIO (ACC2).............................5 Firmware Upgrades..................................... 23 Quadrature Outputs (RX I/Q) ................................5 Internal Batteries ....................................... -
DIGITAL COMMUNICATIONS by AD5XJ Ken LA Section Technical Specialist
DIGITAL COMMUNICATIONS by AD5XJ Ken LA Section Technical Specialist Disclaimer: These are my comments on digital communications and are not necessarily all there is to know on the subject. As with everything computer related – there are at least six ways to do the same thing. Given this caveat, let me say this is opinion and not the complete story. I only relate to you my experience of 5 or more years using digital modes to give you the benefit of my experience. I will leave the rest for you to research as you see fit. Digital Sound Card Software: In an effort to make sense of the vast selection of software available to ham operators, this session will be devoted to supplying information to help you in deciding what software will best suit your application. Selection of software is highly subjective in that it depends almost entirely on the operator and situation as to which software is appropriate or useful. What we attempt to do here is give the capabilities of software on a comparative basis and allow you to make those choices as needed. We will group the available applications into three basic catagories: 1) digital text, 2) digital voice, 3) digital image and video. All software applications mentioned can be used with the computer soundcard as the modem. Some also allow the use of external computer sound interfaces like the Tigertronics SignaLink modem which has a soundcard built in and does not rely on the soundcard in the computer. Offloading the soundcard duties in this manner increases the efficiency of the interface function several orders of magnitude given the modest cost of $99-$125. -
Radio Communications in the Digital Age
Radio Communications In the Digital Age Volume 1 HF TECHNOLOGY Edition 2 First Edition: September 1996 Second Edition: October 2005 © Harris Corporation 2005 All rights reserved Library of Congress Catalog Card Number: 96-94476 Harris Corporation, RF Communications Division Radio Communications in the Digital Age Volume One: HF Technology, Edition 2 Printed in USA © 10/05 R.O. 10K B1006A All Harris RF Communications products and systems included herein are registered trademarks of the Harris Corporation. TABLE OF CONTENTS INTRODUCTION...............................................................................1 CHAPTER 1 PRINCIPLES OF RADIO COMMUNICATIONS .....................................6 CHAPTER 2 THE IONOSPHERE AND HF RADIO PROPAGATION..........................16 CHAPTER 3 ELEMENTS IN AN HF RADIO ..........................................................24 CHAPTER 4 NOISE AND INTERFERENCE............................................................36 CHAPTER 5 HF MODEMS .................................................................................40 CHAPTER 6 AUTOMATIC LINK ESTABLISHMENT (ALE) TECHNOLOGY...............48 CHAPTER 7 DIGITAL VOICE ..............................................................................55 CHAPTER 8 DATA SYSTEMS .............................................................................59 CHAPTER 9 SECURING COMMUNICATIONS.....................................................71 CHAPTER 10 FUTURE DIRECTIONS .....................................................................77 APPENDIX A STANDARDS -
A High-Performance, Single-Signal, Direct-Conversion Receiver with DSP Filtering
By Rob Frohne, KL7NA A High-Performance, Single- Signal, Direct-Conversion Receiver with DSP Filtering By adding a DSP demodulator to a well-established and popular receiver design—KK7B’s R2— you can have a bit of the latest filter technology at your fingertips! ith so many new radios incor- realistic to have a digital filter with the Motorola 56002 processor uses 24 bits of porating digital signal proces- equivalent of hundreds of poles. (In the precision; the TI TMS320C5X uses only sing (DSP) for demodulation analog domain, it takes one inductor or 16. It was obvious that we needed to start W and filtering, I got the itch to capacitor to make one pole.) Few analog over. play with one myself. By “play with one,” designers use more than ten poles in a fil- That start didn’t come until I taught a I don’t mean merely operate a DSP- ter, because it’s very difficult to make an communication systems course during the equipped receiver, I wanted to be able to analog filter with more than about ten poles winter quarter of 1996. As a homework as- put my own software into the receiver and work properly. signment, I had my students try the Motorola put to work some of those nifty signal-pro- EVM (evaluation module) in place of the cessing ideas I teach others how to use! Some Background TI DSK. It proved simple to modify a filter This project started in 1994. Ralph program supplied by Motorola to do the Why DSP? Stirling, KC3F, and I did exactly what Rick basic filtering necessary for SSB demo- You may wonder “What’s the big deal?” Campbell, KK7B, suggested in his R2 re- dulation, and it worked much better than the Why are so many of the new radios sup- ceiver article.1 (Get your copy of that article TI DSK-based receiver. -
Maintenance of Remote Communication Facility (Rcf)
ORDER rlll,, J MAINTENANCE OF REMOTE commucf~TIoN FACILITY (RCF) EQUIPMENTS OCTOBER 16, 1989 U.S. DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION AbMINISTRATION Distribution: Selected Airway Facilities Field Initiated By: ASM- 156 and Regional Offices, ZAF-600 10/16/89 6580.5 FOREWORD 1. PURPOSE. direction authorized by the Systems Maintenance Service. This handbook provides guidance and prescribes techni- Referenceslocated in the chapters of this handbook entitled cal standardsand tolerances,and proceduresapplicable to the Standardsand Tolerances,Periodic Maintenance, and Main- maintenance and inspection of remote communication tenance Procedures shall indicate to the user whether this facility (RCF) equipment. It also provides information on handbook and/or the equipment instruction books shall be special methodsand techniquesthat will enablemaintenance consulted for a particular standard,key inspection element or personnel to achieve optimum performancefrom the equip- performance parameter, performance check, maintenance ment. This information augmentsinformation available in in- task, or maintenanceprocedure. struction books and other handbooks, and complements b. Order 6032.1A, Modifications to Ground Facilities, Order 6000.15A, General Maintenance Handbook for Air- Systems,and Equipment in the National Airspace System, way Facilities. contains comprehensivepolicy and direction concerning the development, authorization, implementation, and recording 2. DISTRIBUTION. of modifications to facilities, systems,andequipment in com- This directive is distributed to selectedoffices and services missioned status. It supersedesall instructions published in within Washington headquarters,the FAA Technical Center, earlier editions of maintenance technical handbooksand re- the Mike Monroney Aeronautical Center, regional Airway lated directives . Facilities divisions, and Airway Facilities field offices having the following facilities/equipment: AFSS, ARTCC, ATCT, 6. FORMS LISTING. EARTS, FSS, MAPS, RAPCO, TRACO, IFST, RCAG, RCO, RTR, and SSO. -
Federal Communications Commission § 97.307
Federal Communications Commission § 97.307 § 97.307 Emission standards. (1) No angle-modulated emission may have a modulation index greater than 1 (a) No amateur station transmission at the highest modulation frequency. shall occupy more bandwidth than nec- (2) No non-phone emission shall ex- essary for the information rate and ceed the bandwidth of a communica- emission type being transmitted, in ac- tions quality phone emission of the cordance with good amateur practice. same modulation type. The total band- (b) Emissions resulting from modula- width of an independent sideband emis- tion must be confined to the band or sion (having B as the first symbol), or segment available to the control opera- a multiplexed image and phone emis- tor. Emissions outside the necessary sion, shall not exceed that of a commu- bandwidth must not cause splatter or nications quality A3E emission. keyclick interference to operations on (3) Only a RTTY or data emission adjacent frequencies. using a specified digital code listed in (c) All spurious emissions from a sta- § 97.309(a) of this part may be transmit- tion transmitter must be reduced to ted. The symbol rate must not exceed the greatest extent practicable. If any 300 bauds, or for frequency-shift key- spurious emission, including chassis or ing, the frequency shift between mark power line radiation, causes harmful and space must not exceed 1 kHz. interference to the reception of an- (4) Only a RTTY or data emission other radio station, the licensee of the using a specified digital code listed in interfering amateur station is required § 97.309(a) of this part may be transmit- to take steps to eliminate the inter- ted. -
The LANDLINE the Newsletter of the COPPER COUNTRY RADIO AMATEUR ASSOCIATION, INC
Volume 24 Number 01 January 2007 The LANDLINE The Newsletter of the COPPER COUNTRY RADIO AMATEUR ASSOCIATION, INC. P.O. BOX 217 DOLLAR BAY, MICHIGAN 49922-0217 Visit us on the World Wide Web: www.ccraa.net Membership:”Time to Join or Renew” 2007 CCRAA membership form is available via the Web page at http://www.ccraa.net/start.html. Also attached form with this issue of CCRAA newsletter. Howard(KD8ABP) FOR SALE: Wilson tri-band beam $80. Also, all books going for 50% off. Contact: Stanley F. Strangle, K8NYT at Bruce Crossing, MI (906) 827-3526 or (906) 390-3526 (cell phone) Web-Site: The below web address was provide by Gary(K8YSZ) www.rfcafe.com. PROGRAM FOR JANUARY: A program on the FCC's WT Docket 04-140 (Omnibus Band Plan), and their WT Docket 05-235 (Dropping the Morse code) will be presented by Geo., W8FWG * AO-51 "Echo" is now carrier-access: AO-51 "Echo" satellite users no longer need to transmit a 67-Hz CTCSS subaudible tone to enable the satellite's transponder. AMSAT Vice President of Operations Drew Glasbrenner, KO4MA, reports AO-51 is now a carrier-access satellite. The change was aimed at improving worldwide access to AO-51, especially from those areas where CTCSS-equipped transceivers are less common. Check the AO-51 operating schedule <http://www.amsat.org/amsat- new/echo/ControlTeam.php> *before* using the satellite! -- AMSAT News Service HAMFEST: Michigan, Negaunee (FEB 3) Flea Market,Dealers/Vendors 9am-1pm Hiawatha ARA, Negaunee Township Hall, 42 Hwy M-35. Swap & Shop, Refreshments, TI 147.270 (100Hz) Adm:$4, Tables:$6 POC: Robert Serfas, N8PKN, 1600 Bayview Dr., Marquette, MI 49855; 906-225-6773; [email protected]; www.qsl.net/k8lod/. -
Southwest Region Spectrum Management Handbook
ORDER SW 6050.12A SOUTHWEST REGION SPECTRUM MANAGEMENT HANDBOOK (Date of Order to be entered at time of ASW-400 signature) DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION Distribution: A-X-5; A-FAF/AT-0 (STD) Initiated By: ASW-473 RECORD OF CHANGES DIRECTIVE NO. SW 6050.12A CHANGE SUPPLEMENTS OPTIONAL CHANGE SUPPLEMENTS OPTIONAL TO TO BASIC BASIC 12/12/01 SW 6050.12A FOREWORD The radio frequency spectrum is a finite, vital, and very limited natural resource available to all countries of the world. This international resource serves mankind in innumerable ways, and each country exercises its own sovereign rights in the use of the electromagnetic waves. Because the radio spectrum knows no bounds, its use cannot be restricted to individual countries. Requirements for use of this resource generally exceed the amount available; therefore, it is necessary that international, national, and regional spectrum management be rigidly practiced. The purpose of this spectrum management order is to present radio frequency spectrum information, guidance, and policy to those organizations using or administrating the radio frequency spectrum within the Southwest Region. Marcos Costilla Manager, Airway Facilities Division Page i (and ii) SW 6050.12A 12/12/01 Page ii 12/12/01 SW 6050.12A TABLE OF CONTENTS CHAPTER 1. ORGANIZATION, AUTHORITY AND RESPONSIBILITY 1. Purpose..................................................................................................................................................................... 1 2. Distribution.............................................................................................................................................................. -
MT's 2011 Amateur Radio Special
www.monitoringtimes.com Scanning - Shortwave - Ham Radio - Equipment Internet Streaming - Computers - Antique Radio ® Volume 30, No. 5 May 2011 U.S. $6.95 Can. $6.95 Printed in the A Publication of Grove Enterprises United States MT’s 2011 Amateur Radio Special In this issue: • SSTV in the Digital Age • Young Ladies’ Radio League • Small Space Operating: You can do it! AR5001D Wide Coverage Professional Grade Communications Receiver Discover the next generation in AOR’s legendary line of professional grade The Legend desktop communications receivers. ■ Multimode receives AM, wide and narrow Lives On! FM, upper and lower sideband and CW ■ Up to 2000 alphanumeric memories (50 channels X 40 banks) can be stored ■ Analog S-meter ■ Fast Fourier Transform algorithms ■ Operated by a Windows XP or higher computer through a USB interface using a provided software package that controls all of the receiver’s functions ■ An SD memory card port can be used to store recorded audio ■ Analog composite video output connector ■ CTCSS and DCS squelch operation ■ Two selectable Type N antenna input ports ■ Adjustable analog 45 MHz IF output with 15 MHz bandwidth ■ Triple-conversion receiver exhibits excellent The AR5001D delivers amazing performance in sensitivity terms of accuracy, sensitivity and speed. ■ Powered by 12 volts DC (AC Adapter included), it can be operated as a base Available in both professional and consumer versions, the AR5001D features or mobile unit wide frequency coverage from 40 KHz to 3.15 GHz*, with no interruptions. ■ Professional (government) version is equipped with a standard voice-inversion Developed to meet the monitoring needs of security professionals and monitoring feature government agencies, the AR5001D can be controlled through a PC running Windows XP or higher. -
Bandspread Official Publication of the Wabash Valley Amateur Radio Association Inc
REGULAR EVENTS SPECIAL EVENTS ! Friday! General Meeting: 7:00 P.M., 1st Friday of Month, at 1715 S. 8th, COUNTY HOMELESS COUNT …………………….! January 27 !Feb. 5:! (old Post Office bldg.) Turn south at Hulman and 8th. Talk-in: ! Ryves Hall 9 A.M. to 9 P.M. (See article, last page.) !! 146.685 RPT; (PL 151.4 MHz). Park in front or north of building. WVARA HAMFEST ………............................……...! March 13 !! The Board meeting immediately follows the General Meeting.! National Guard Armory, 3614 Maple Ave. (Same place as last year.) !! Our meetings are open. Visitors are welcome! BRENTLINGER AWARD DINNER ...............……... ! March 20 !Every! The Club Station is open, 7 - 9 P.M., First Thursday, Downstairs, It will be a carry in at St. Ann's, lower level, Kramer Hall, 1436 !Thursday:! Red Cross Bldg., 700 S. 3rd. Other Thursdays, New Club Station, !! N.E. corner of 7th and Idaho. Entrance and parking east of Bldg. Locust. (Where they have the fish fry!) FEBRUARY 2010 THE BANDSPREAD OFFICIAL PUBLICATION OF THE WABASH VALLEY AMATEUR RADIO ASSOCIATION INC. HB 1060’s POSSIBLE IMPACT ON AMATEUR RADIO Indiana House members have been NWS SKYWARN WX CLASS presented a potential change in state law that could affect mobile Amateur The National Weather Service Indianapo- Radio operations. HR 1060, authored lis office, in conjunction with Illiana Sky- by Rep. Vanessa Summers has been warn, is sponsoring a Severe Weather Spot- sent to the House Public Policy Com- ters' Training Class. The class will take place mittee for further action. So far hear- on Monday, February 22, at 7:00 P.M., EST ings or other actions have not been at the Glas-Col Apparatus annex, at 1715 S. -
16.1 Digital “Modes”
Contents 16.1 Digital “Modes” 16.5 Networking Modes 16.1.1 Symbols, Baud, Bits and Bandwidth 16.5.1 OSI Networking Model 16.1.2 Error Detection and Correction 16.5.2 Connected and Connectionless 16.1.3 Data Representations Protocols 16.1.4 Compression Techniques 16.5.3 The Terminal Node Controller (TNC) 16.1.5 Compression vs. Encryption 16.5.4 PACTOR-I 16.2 Unstructured Digital Modes 16.5.5 PACTOR-II 16.2.1 Radioteletype (RTTY) 16.5.6 PACTOR-III 16.2.2 PSK31 16.5.7 G-TOR 16.2.3 MFSK16 16.5.8 CLOVER-II 16.2.4 DominoEX 16.5.9 CLOVER-2000 16.2.5 THROB 16.5.10 WINMOR 16.2.6 MT63 16.5.11 Packet Radio 16.2.7 Olivia 16.5.12 APRS 16.3 Fuzzy Modes 16.5.13 Winlink 2000 16.3.1 Facsimile (fax) 16.5.14 D-STAR 16.3.2 Slow-Scan TV (SSTV) 16.5.15 P25 16.3.3 Hellschreiber, Feld-Hell or Hell 16.6 Digital Mode Table 16.4 Structured Digital Modes 16.7 Glossary 16.4.1 FSK441 16.8 References and Bibliography 16.4.2 JT6M 16.4.3 JT65 16.4.4 WSPR 16.4.5 HF Digital Voice 16.4.6 ALE Chapter 16 — CD-ROM Content Supplemental Files • Table of digital mode characteristics (section 16.6) • ASCII and ITA2 code tables • Varicode tables for PSK31, MFSK16 and DominoEX • Tips for using FreeDV HF digital voice software by Mel Whitten, KØPFX Chapter 16 Digital Modes There is a broad array of digital modes to service various needs with more coming. -
Boulder Amateur Television Club TV Repeater's REPEATER April, 2020
TV Rptrs Rptr-39.doc (3/28/2020, kh6htv) p. 1 of 7 Boulder Amateur Television Club TV Repeater's REPEATER April, 2020 BATVC web site: www.kh6htv.com ATN web site: www.amateurtelevisionnetwork.org Jim Andrews, KH6HTV, editor - [email protected] www.kh6htv.com Future Newsletters: If you have contributions for future newsletters, please send them to me. We also welcome news from other ATV groups around the USA. We encourage you to forward this newsletter on to other ATV ham friends in your clubs. Quote from John - WB0CMC: "If you have a good comb generator would that help if you’re having a bad AIR day?" NEW 2ed WEEKLY ATV NET: Due to the pandemic, and everyone being required to stay at home, we are all getting "Cabin Fever" and missing our social interactions with friends and society in general. Thus, the consensus of most of the BATVC members, is that we should hold two ATV nets each week for the duration. Our regular net has been on Thursday afternoons at 3pm local time, with Don, N0YE, as net control. Colin, WA2YUN, has suggested we do the second net on Sunday afternoons. So, let's do it starting this Sunday, the 29th, at 3pm local time. I propose we use a different format with a round table discussion of various topics. Our Thursday nets, seem to be for one ham to talk for several minutes on one or more subjects. For the new Sunday net, let's try making much shorter TV transmissions and expressing our thoughts on a particular subject and then turning it over to another for their comments.