§ 90.101 47 CFR Ch. I (10–1–96 Edition)

with an authorized bandwidth not to Subpart F—Radiolocation Service exceed 6 kHz. (21) Assignment of frequencies in this § 90.101 Scope. band are subject to the provisions of The Radiolocation Service accommo- § 90.173 dates the use of methods for de- (22) This frequency will be authorized termination of direction, distance, a channel bandwidth of 25 kHz. speed, or position for purposes other (23) This frequency is available for than navigation. Rules as to eligibility systems first licensed prior to August for licensing, permissible communica- 18, 1995. No new systems will be author- tions, frequency available, and any spe- ized after August 18, 1995, but prior au- cial requirements are set forth in thorized systems may be modified, ex- § 90.103. Provisions for the Location and panded, and renewed. Monitoring Service (LMS) are con- (e) Limitation on number of frequencies tained in subpart M of this part. assignable. Normally only one fre- [60 FR 15252, Mar. 23, 1995] quency, or pair of frequencies in the paired frequency mode of operation, § 90.103 Radiolocation Service. will be assigned for op- (a) Eligibility. The following persons erations by a single applicant in a are eligible for authorizations in the given area. The assignment of an addi- Radiolocation Service to operate sta- tional frequency or pair of frequencies tions to determine distance, direction, will be made only upon a satisfactory speed, or position by means of radio- showing of need, except that: (See also location devices, for purposes other § 90.253.) than navigation: (1) [Reserved] (1) Any person engaged in a commer- (2) Frequencies in the 25–50 MHz, 150– cial, industrial, scientific, educational, 170 MHz, 450–512 MHz and 902–928 MHz or local government activity bands may be assigned for the oper- (2) A corporation or association that ation of Location and Monitoring Serv- will furnish radiolocation service to ice (LMS) systems in accordance with other persons. the provisions of subpart M of this (3) A corporation that will furnish a part, notwithstanding this limitation. nonprofit radio communication service to its parent corporation, to another (3) The frequency band 33.00–33.01 subsidiary of the same parent, or to its MHz may be used for developmental own subsidiary where the party to be operation subject to the provisions of served is regularly engaged in any of subpart Q. Any type of emission other the eligibility activities set forth in than pulsed emission may be used if this paragraph. the bandwidth occupied by the emis- (b) Frequencies available. The follow- sion is contained within the assigned ing table indicates frequencies avail- frequency band. able for assignment to stations in the (f) In addition to the frequencies Radiolocation Service, together with shown in the frequency table of this the class of station(s) to which they section, frequencies in the 421–430 MHz are normally assigned, and the specific band are available in the Detroit, assignment limitations, which are ex- Cleveland, and Buffalo areas in accord- plained in paragraph (c) of this section: ance with the rules in §§ 90.273 through 90.281. Radiolocation Service Frequency Table (Secs. 4(i) and 303(r), Communications Act of Frequency or band Class of station(s) Limitation 1934, as amended, §§ 0.131 and 0.331 of the Kilohertz: Commission’s Rules and 5 U.S.C. 553 (b)(3)(B) 70 to 90 ...... Radiolocation land or 1 and (d)(3); 47 U.S.C. 154(i) and 303) mobile. 90 to 110 ...... Radiolocation land ...... 2 [43 FR 54791, Nov. 22, 1978] 110 to 130 ...... Radiolocation land or 1 mobile. EDITORIAL NOTE: For FEDERAL REGISTER ci- 1605 to 1715 ...... do ...... 4, 5, 6, 28, tations affecting § 90.95, see the List of CFR and 29. Sections Affected in the Finding Aids sec- 1715 to 1750 ...... do ...... 5, 6 tion of this volume. 1750 to 1800 ...... do ...... 5, 6, 7

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Radiolocation Service Frequency TableÐ countries, frequency assignments in Continued this band may either be unavailable of may be subject to certain technical of Frequency or band Class of station(s) Limitation operational limitations. Therefore, ap- 1900 to 1950 ...... do ...... 6, 25, 26, plications for frequency assignments in 27, and this band shall include information 30. concerning the output 1950 to 2000 ...... do ...... 6, 25, 27, and 30. power; the type and directional charac- 3230 to 3400 ...... do ...... 6, 8 teristics of the antenna and the mini- Megahertz: mum hours of operation (GMT). 420 to 450 ...... do ...... 21 2450 to 2500 ...... do ...... 9, 22, 23 (7) This band is shared with the Dis- 2900 to 3100 ...... do ...... 10, 11 aster Communications Service (part 99) 3100 to 3300 ...... do ...... 12 and operations are on a secondary basis 3300 to 3500 ...... do ...... 12, 13 3500 to 3700 ...... do ...... 12 to that service between local sunset 5250 to 5350 ...... do ...... 12 and local sunrise, or at any time dur- 5350 to 5460 ...... do ...... 10, 14 ing an actual or imminent disaster. 5460 to 5470 ...... do ...... 10, 15 5470 to 5600 ...... do ...... 10, 11 Local sunrise and sunset times shall be 5600 to 5650 ...... do ...... 10, 16 derived from the 1946 American Nau- 8500 to 9000 ...... do ...... 12, 17 tical Almanac. Each frequency assign- 9000 to 9200 ...... do ...... 10, 14 9200 to 9300 ...... do ...... 12 ment in this band is on an exclusive 9300 to 9500 ...... do ...... 10, 15, 18 basis within the daytime primary serv- 9500 to 10,000 ...... do ...... 12 ice area to which assigned. The day- 10,000 to 10,500 ...... do ...... 12, 13, 19 10,500 to 10,550 ...... do ...... 20, 22, 24 time primary service area is the area 13,400 to 14,000 ...... do ...... 12 where the signal intensities are ade- 15,700 to 17,700 ...... do ...... 12 quate for radiolocation purposes during 24,050 to 24,250 ...... do ...... 12, 22, 24 33,400 to 36,000 ...... do ...... 12 the hours from sunrise to sunset from all stations in the radiolocation system (c) Explanation of assignment limita- of which the station in question is a tions appearing in the frequency table part; that is, the primary service area of paragraph (b) of this section: of the station coincides with the pri- (1) This frequency band is shared mary service area of the system. The with and stations operating in this fre- normal minimum geographical separa- quency band in this service are on a tion between stations of different li- secondary basis to stations licensed in censees shall be at least 580 km. (360 the International and mi.) when the stations are operated on the . the same frequency or on different fre- (2) This frequency band is shared quencies separated by less than 3 kHz. with and stations operating in this fre- Where geographical separation of less quency band in this service are on a than 580 km. (360 mi.) is desired under secondary basis to the LORAN Naviga- these circumstances it must be shown tion System; all operations are limited that the desired separation will result to radiolocation lands stations in ac- in protection ratio of at least 20 deci- cordance with footnote US104, § 2.106 of bels throughout the daytime primary this chapter. service area of other stations. Applica- (3) [Reserved] tions in this band are placed on public (4) Non-Government radiolocation notice in accordance with § 1.962 of this service in this band is on a secondary chapter. Where the number of appli- basis to stations in the Aeronautical cants requesting authority to serve an Radionavigation Service operating on area exceeds the number of frequencies 1638 or 1708 kHz. available for assignment; or where it (5) Station assignments on fre- appears that fewer applicants or licens- quencies in this band will be made sub- ees than the number before it should be ject to the conditions that the maxi- given authority to serve a particular mum output power shall not exceed 375 area; or where it appears that an appli- watts and the maximum authorized cant, either directly or indirectly, bandwidth shall not exceed 2 kHz. seeks to use more than 25 kHz of the (6) Because of the operation of sta- available spectrum space in this band, tions having priority on the same or the applications may be designated for adjacent frequencies in this or in other hearing.

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(8) Frequencies in this band may only (part 80) and the Government Meteoro- be assigned to radiolocation stations logical Aids Service. which are also assigned frequencies in (17) Operation in this frequency band the 1605–1800 kHz band, provided the is on a secondary basis to airborne use of frequencies in this band is nec- Doppler at 8800 MHz. essary for the proper functioning of the (18) Radiolocation installations will particular radiolocation system. Oper- be coordinated with the Government ations in this band are on a secondary Meteorological Aids Service, and inso- basis to stations operating in accord- far as practicable, will be adjusted to ance with the Commission’s table of meet the needs of that service. frequency allocations contained in (19) Operations in this band are on a § 2.106 of this chapter. secondary basis to the Amateur Radio (9) This band is allocated to the Service (part 97). Pulsed emissions are Radiolocation Service on a secondary prohibited. basis to other fixed or mobile services (20) This band is restricted to radio- and must accept any harmful inter- location systems using type N0N emis- ference that may be experienced from sion with a power not to exceed 40 such services or from the industrial, watts into the antenna. scientific, and medical (ISM) equip- ment operating in accordance with (21) Non-Government radiolocation part 18 of this chapter. In the 2483.5– stations in the band are secondary to 2500 MHz band, no applications for new the Government Radiolocation Service, or modification to existing stations to the Amateur Radio Service and the increase the number of Amateur-Satellite Service. Pulse-rang- will be accepted. Existing licensees as ing radiolocation stations in this band of July 25, 1985, or on a subsequent date may be authorized along the shorelines following as a result of submitting an of Alaska and the contiguous 48 states. application for license on or before Radiolocation stations using spread July 25, 1985, are grandfathered and spectrum techniques may be author- their operation is co-primary with the ized in the band 420–435 MHz for oper- Satellite Service. ation within the contiguous 48 states (10) Speed measuring devices will not and Alaska. Also, stations using spread be authorized in this band. spectrum techniques shall be limited (11) This frequency band is shared to a maximum output power of 50 with and is on a secondary basis to the watts, shall be subject to the applica- Maritime Radionavigation Stations ble technical standards in § 90.209 until (part 80) and to the Government Radio- such time as more definitive standards location Service. are adopted by the Commission and (12) This frequency band is shared shall identify in accordance with with and is on a secondary basis to the § 90.425(c)(3). Authorizations will be Government Radiolocation Service. granted on a case-by-case basis; how- (13) Operations in this band are lim- ever, operations proposed to be located ited to survey operations using trans- within the zones set forth in § 90.177(e) mitters with a peak power not to ex- should not expect to be accommodated. ceed 5 watts into the antenna. (22) For frequencies 2455, 10,525, and (14) This frequency band is shared 24,125 MHz unmodulated continuous with and is on a secondary basis to the wave (NON) emission only shall be em- Aeronautical Radionavigation Service ployed and a frequency stability of at (part 87) and to the Government Radio- least 0.2 percent shall be maintained. location Service. Such stations shall be exempt from the (15) The non-Government Radio- requirements of §§ 90.403(c) and (f) and location Service in this band is second- 90.429. ary to the Maritime Radionavigation (23) Devices designed to operate as Stations (part 80), the Aeronautical field disturbance sensors on fre- Radionavigation Service (part 87) and quencies between 2450 and 2500 MHz the Government Radiolocation Service. with a field strength equal to or less (16) This frequency band is shared than 50,000 microvolts per meter at 30 with and is on a secondary basis to the meters, on a fundamental frequency, Maritime Radionavigation Stations will not be licensed or type accepted

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for use under this part. Such equip- erwise applicable technical standards. ment must comply with the require- Applications for wideband systems in ments for field disturbance sensors as this band will be accepted beginning set forth in part 15 of this chapter. December 15, 1985. (24) Devices designed to operate as (28) Since the 1605–1705 kHz band has field disturbance sensors on fre- been reallocated for AM broadcasting, quencies between 10,500 and 10,550 MHz no new assignments in the 1605–1705 and between 24,050 and 24,250 MHz, with kHz portion of this band shall be made field strength equal to or less than after September 30, 1985. 250,000 microvolts per meter at 30 me- (29) Beginning July 1, 1987, licensees ters, on the fundamental frequency, of existing systems authorized fre- will not be licensed or type accepted quencies in the 1605–1705 kHz portion of for use under this part. Such equip- this band may request modification of ment must comply with the require- their authorizations to change fre- ments for field disturbance sensors as quencies to the 1900–2000 kHz band. set forth in part 15 of this chapter. (30) Until July 1, 1988, this band will (25) Station assignments on fre- be available only for licensees of exist- quencies in this band will be made sub- ing systems operating in the 1605–1705 ject to the conditions that the maxi- kHz portion of the 1605–1715 kHz band mum output power shall not exceed 375 requesting modification of their au- watts and the maximum authorized thorizations to change frequencies to bandwidth shall not exceed 1.0 kHz. this band and for licensees of wideband (26) Each frequency assignment in systems. On July 1, 1988, requests for this band is on an exclusive basis with- new station authorizations in this band in the primary service area to which will be accepted and, if necessary, will assigned. The primary service area is be subject to the random selection pro- the area where the signal intensities cedures outlined in § 1.972 of the Com- are adequate for radiolocation purposes mission’s Rules. from all stations in the radiolocation (d) Other additional frequencies avail- system of which the station in question able. Radiolocation stations in this is a part; that is, the primary service service may be authorized, on request, area of the station coincides with the to use frequencies allocated exclusively primary service area of the system. to Federal Government stations, in The normal minimum geographical those instances where the Commission separation between stations of dif- finds, after consultation with the ap- ferent licensees shall be at least 1931 propriate Government agency or agen- km (1200 miles) when the stations are cies, that such assignment is necessary operated on the same frequency or on or required for coordination with Gov- different frequencies separated by less ernment activities. than 1.0 kHz. Where geographical sepa- ration of less than 1931 km (1200 miles) [43 FR 54791, Nov. 22, 1978] is requested under these cir- EDITORIAL NOTE: For FEDERAL REGISTER ci- cumstances, it must be shown that the tations affecting § 90.103, see the List of CFR desired separation will result in a pro- Sections Affected in the Finding Aids sec- tection ratio of at least 20 decibels tion of this volume. throughout the primary service area of other stations. Subpart G—Applications and (27) Notwithstanding the bandwidth Authorizations limitations otherwise set forth in this section of the rules, wideband systems § 90.111 Scope. desiring to operate in this band may This subpart contains the procedures use such bandwidth as is necessary for and requirements for the submission or proper operation of the system pro- filing of applications for authority to vided that the field strength does not operate radio facilities under this part. exceed 120 microvolts per meter per The procedures described as those uti- square root Hertz (120 uv/m/Hz1 2) at 1.6 ¤ lized by the Commission after receiv- km (1 mile). Such wideband operations ing filed applications. shall be authorized on a secondary basis to stations operating within oth- [51 FR 14996, Apr. 22, 1986]

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