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al stations may use fre bands 110-112 kc/s, 115–126 130 kes on a permitted basis ed communications to aircraft. The equency 143 kc/s is the calling

quency in stations in the maritime mike using the band 90-160 kc/s. cons for its use are prescribed in

northern areas which are subject Verona risturbances the aeronautical fixed eyes the primary service. It

Forwegian fixed stations situated in I was subject to auroral disturbLe slowed to continue operation on To persones in the band 385-395 kc/s for

mssons chiefly composed of weather

152 The frequency 410 kc/s is designated marime radionavigation service satz direction-ânding). Other allocated services in the band 405-415 kc/s shall not Buss Iseméti interference to radio direczon dhuing the band 405-415 kc/s no Ny shail be assigned to coast stations.

150) the Furopean Maritime Area, subwie De conditions specified in the Final * 1 de Suropean Maritime Conference Sagendagen 1348), and any subsequent reSunat agreement, the administrations Parochied may keep in the bands 415-485 23 wa HA-525 ke/s such of the following IPVBUTIQUING stations as will not cause harm

merierence to the maritime mobile sevier. damar, Innsbruck, Oestersund, Oulu. 156) Samited to radiotelegraphy.

1st The trequency 500 kc/s is the interCada aistress and calling frequency for doisiegraphy. The conditions for its use 4* MESUS:Qed in Article 32.

58 operating stations of the aero"PC 78QIonavigation service, the adminSeed 20ncerned shall take all the tech

steps necessary to avoid harmful 2-4 service to the maritime mobile service. 54. The carrier power of broadcasting vis B this band shall not exceed 250

156) In Region 2 the Loran system has way. Other services to which the band & located may use any frequency in this Nid yovided that they do not cause harmMmverference to the Loran system.

* Region 3 the Loran system in any crea operates either on 1850 or So to s, the bands occupied being 18258 and 1925-1975 kc/s respectively. Outer services to which the band 1800-2000 to a 's allocated may use any frequency 3D condition that no harmful interce's caused to the Loran system oper

A No 1800 or 1950 kc/s.

In Region 2, limited to ship stations iotelegraphy.

The frequency 2182 kc/s is the interdistress and calling frequency for The conditions for the his frequency are prescribed in

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For the conditions of use of this

'he broadcasting service see Nos.
'423 to 428.

tard frequency is 2500 kc/s.
standard

frequency guard

s, 5 Mc/s, 10 Mc/s, 15 Mc/s, Mc/s may be used by the rvice. The radio astron

protected from harmful services operating in other rdance with the provisions of Mations, only to the extent that **vices are protected from each other. In the U.S.S.R., in the bands 406341 kc/s and 4408-4438 kc/s, fixed stations of limited power may operate provided that, in order to minimize the possibility of causing harmful interference to the maritime mobile service, they are situated at least 600 km from the coast. A limited power station is one whose power and antenna characteristics are so adjusted that the field strength established at any point in any direction does not exceed that obtainable with a nondirective antenna and a peak envelope power of 1 kw. (209) On condition that harmful interference is not caused to the maritime mobile service, the frequencies between 4063 and 4438 kc/s may be used exceptionally by fixed stations communicating only within the boundary of the country in which they are located, with a mean power not exceeding 50 Watts; however, in Regions 2 and 3, between 4238 and 4368 kc/s, a mean power not exceeding 500 watts may be used by such fixed

stations.

(210) The standard frequency is 5000 kc/s. (211) On condition that harmful interference is not caused to the maritime mobile service, the frequencies between 6200 and 6525 kc s may be used exceptionally by fixed stations, communicating only within the boundary of the country in which they are located, with a mean power not exceeding 50 Watts At the time of notification of these frequencies, the attention of the International Frequency Registration Board will be drawn to the above conditions.

(218) Between 8615 and 8815 kc/s, 12,925 and 13,200 kc/s, and between 17,160 and 17,360 kcs, the U.S.S.R. will meet their special requirements for the fixed service with due regard to technical provisions (power, location, antenna, etc.) with a view to minimizing the possibility of harmful interference to the maritime mobile service. Coast stations in the maritime mobile service will Also have due regard to technical provisions (power, location, antenna, etc.) with a view to minimizing the possibility of harmful Interference to the fixed service in the USSR. The International Frequency Registration Board will be consulted regarding this subject.

(214) The standard frequency is 10,000

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(215) The band 10003-10005 kc/s is also Allocated, on a secondary basis, to the space research service.

(215A) In Bulgaria, Cuba, Hungary, Poland, Roumania, Czechoslovakia and the U.S.S.R., the space research service is a primary service in the bands 15762-15768 kc/s and 18030-18036 kc/s.

(216) In the U.S.S.R., the band 11,40011,450 kc/s is also allocated to the aeronautical mobile (OR) service.

(217) The frequency 13,560 kc/s is designated for industrial, scientific and medical purposes. Emissions must be confined within the limits of ±0.05 percent of that frequency. Radiocommunication services operating within those limits must accept any harmful interference that may be experienced from the operation of industrial, scientific and medical equipment.

(218) In the U.S.S.R., the band 14,25014,350 kc/s is also allocated to the fixed service.

(219) The standard frequency is 15,000 kc/s.

(220) The standard frequency is 20,000 kc/s.

(221) The band 19990-20010 kc/s is also allocated, on a secondary basis, to the space research service.

(221A) The frequency 20007 kc/s may also be used, in emergency, in the search for, and rescue of, astronauts and space vehicles. Emissions must be confined in a band of 3 kc/s about this frequency.

(222) Intership radiotelegraphy may be used in the maritime mobile service between the frequencies 23,350 and 24,000 kc/s.

(223) The standard frequency is 25,000 kc/s.

(224) Limited to ship stations employing A1 or F1 emissions.

(225) The frequency 27,120 kc/s is designated for industrial, scientific and medical purposes. Emissions must be confined within the limits of +0.6 percent of that frequency. Radiocommunication services operating within those limits must accept any harmful interference that may be experienced from the operation of industrial, scientific and medical equipment.

(226) In Region 2, Australia and New Zealand, the amateur service may operate between the frequencies 26,960 and 27,230 kc/s.

(228) Stations designed to use ionospheric scatter may operate only subject to agreements between administrations concerned and those whose services, operating in accordance with the Table, may be affected.

(229) Systems designed to use ionospheric scatter or other fixed service systems designed to operate over distances exceeding 800 km shall confine their emissions to the following bands:

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FOOTNOTES

GENEVA FOOTNOTES

(157) Administrations authorizing the use of frequencies below 10 kc/s for special national purposes shall ensure that no harmful interference is caused thereby to the services to which the bands above 10 kc/s are allocated (see also Article 14, No. 699).

(158) Limited to coast telegraph stations (A1 and F1 only).

(159) The stations of services to which the bands between 14 and 70 kc/s are allocated may transmit standard frequency and time signals. Such stations shall be afforded protection from harmful interference. In Albania, Bulgaria, Hungary, Poland, Roumania, Czechoslovakia, and the U.S.S.R., the frequencies 25 kc/s and 50 kc/s will be used for this purpose under the same conditions.

(160) The standard frequency is 20 kc/s. (161) In the U.S.S.R., frequencies in the band 60-80 kc/s may be used for industrial, scientific and medical purposes subject to the condition that interference is not caused to stations of services to which this band is allocated.

(162) Limited to continuous wave systems. (164) The establishment and operation of maritime radionavigation stations shall be subject to agreements between administrations whose services, operating in accordance with the Table, may be affected. However, the fixed, maritime mobile and radiolocation services shall not cause harmful interference to maritime radionavigation stations established under such agreements.

(166) The development and operation of long distance radionavigation systems are authorized in this band, which will become exclusively allocated, wholly or in part, to the radionavigation service for the use of any one such system as soon as it is internationally adopted. Other considerations being equal, preference should be given to the system requiring the minimum bandwidth for world-wide service and causing the least harmful interference to other services. If a pulse radionavigation system is employed, the pulse emissions shall nevertheless be confined within the band 90-110 kc/s and shall not cause harmful interference outside the band to stations operating in accordance with the Regulations. In Regions 1 and 3, during the period prior to the international adoption of any long distance radionavigation system, the operation of specific radionavigation stations shall be subject to agreements between administrations whose services, operating in accordance with the Table, may be affected. Once established under such agreements, radionavigation stations shall be protected from harmful interference.

(167) Only classes A1 or F1, A4 or F4 emissions are authorized in the band 90-160 kc/s for stations of the fixed and maritime mobile services.

(168) Aeronautical stations may use frequencies in the bands 110-112 kc/s, 115–126 kc/s and 129-130 kc/s on a permitted basis for high-speed communications to aircraft.

(171) The frequency 143 kc/s is the calling frequency for stations in the maritime mobile service using the band 90-160 kc/s. The conditions for its use are prescribed in Article 32.

(179) In northern areas which are subject to auroral disturbances the aeronautical fixed service is the primary service.

(181) Norwegian fixed stations situated in northern areas subject to auroral disturbances are allowed to continue operation on two frequencies in the band 385-395 kc/s for transmissions chiefly composed of weather messages.

(182) The frequency 410 kc/s is designated for the maritime radionavigation service (radio direction-finding). Other allocated services in the band 405-415 kc/s shall not cause harmful interference to radio direction-finding. In the band 405-415 kc/s no frequency shall be assigned to coast stations.

(185) In the European Maritime Area, subject to the conditions specified in the Final Acts of the European Maritime Conference (Copenhagen 1948), and any subsequent revision of that agreement, the administrations concerned may keep in the bands 415-485 kc/s and 515-525 kc/s such of the following broadcasting stations as will not cause harmful interference to the maritime mobile service: Hamar, Innsbruck, Oestersund, Oulu. (186) Limited to radiotelegraphy.

(187) The frequency 500 kc/s is the international distress and calling frequency for radiotelegraphy. The conditions for its use are prescribed in Article 32.

(188) In operating stations of the aeronautical radionavigation service, the administrations concerned shall take all the technical steps necessary to avoid harmful interference to the maritime mobile service.

(191) The carrier power of broadcasting stations in this band shall not exceed 250 watts.

(198) In Region 2 the Loran system has priority. Other services to which the band is allocated may use any frequency in this band provided that they do not cause harmful interference to the Loran system.

In Region 3 the Loran system in any particular area operates either on 1850 or 1950 kc/s, the bands occupied being 18251875 kc/s and 1925-1975 kc/s respectively. Other services to which the band 1800-2000 kc/s is allocated may use any frequency therein on condition that no harmful interference is caused to the Loran system operating on 1850 or 1950 kc/s.

(200) In Region 2, limited to ship stations using radiotelegraphy.

(201) The frequency 2182 kc/s is the international distress and calling frequency for radiotelephony. The conditions for the of this frequency are prescribed in

use Article 35.

(202) For the conditions of use of this band by the broadcasting service see Nos. 135, 136, and 423 to 428.

(203) Standard frequency is 2500 kc/s. (204) The standard frequency guardbands at 2.5 Mc/s, 5 Mc/s, 10 Mc/s, 15 Mc/s, 20 Mc s, and 25 Mc/s may be used by the radio astronomy service. The radio astronomy service shall be protected from harmful interference from services operating in other bands in accordance with the provisions of these Regulations, only to the extent that these services are protected from each other.

(208) In the U.S.S.R., in the bands 40634133 kc/s and 4408-4438 kc/s, fixed stations of limited power may operate provided that, in order to minimize the possibility of causing harmful interference to the maritime mobile service, they are situated at least 600 km from the coast. A limited power station is one whose power and antenna characteristics are so adjusted that the field strength established at any point in any direction does not exceed that obtainable with a nondirective antenna and a peak envelope power of 1 kw. (209) On condition that harmful interference is not caused to the maritime mobile service, the frequencies between 4063 and 4438 kc/s may be used exceptionally by fixed stations communicating only within the boundary of the country in which they are located, with a mean power not exceeding 50 watts; however, in Regions 2 and 3, between 4238 and 4368 kc/s, a mean power not exceeding 500 watts may be used by such fixed stations.

(210) The standard frequency is 5000 kc/s. (211) On condition that harmful interference is not caused to the maritime mobile service. the frequencies between 6200 and 6525 kc/s may be used exceptionally by fixed stations, communicating only within the boundary of the country in which they are located, with a mean power not exceeding 50 watta At the time of notification of these frequencies, the attention of the International Frequency Registration Board will be drawn to the above conditions.

(213) Between 8615 and 8815 kc/s, 12,925 and 13,200 kc/s, and between 17,160 and 17,360 ke/s, the US.S.R. will meet their special requirements for the fixed service with due regard to technical provisions (power, location, antenna, etc.) with a view to minimizing the possibility of harmful interference to the maritime mobile service. Coast stations in the maritime mobile service will Also have due regard to technical provisions power, location, antenna, etc.) with a view to minimizing the possibility of harmful

rference to the fixed service in the CR. The International Frequency Registration Board will be consulted regarding this subject.

(214) The standard frequency is 10,000 kc &.

(215) The band 10003-10005 kc/s is also allocated, on a secondary basis, to the space research service.

(215A) In Bulgaria, Cuba, Hungary, Poland, Roumania, Czechoslovakia and the U.S.S.R., the space research service is a primary service in the bands 15762-15768 kc/s and 18030-18036 kc/s.

(216) In the U.S.S.R., the band 11,40011,450 kc/s is also allocated to the aeronautical mobile (OR) service.

(217) The frequency 13,560 kc/s is designated for industrial, scientific and medical purposes. Emissions must be confined within the limits of ±0.05 percent of that frequency. Radiocommunication services operating within those limits must accept any harmful interference that may be experienced from the operation of industrial, scientific and medical equipment.

(218) In the U.S.S.R., the band 14,25014,350 kc/s is also allocated to the fixed service.

(219) The standard frequency is 15,000 kc/s.

(220) The standard frequency is 20,000 kc/s.

(221) The band 19990-20010 kc/s is also allocated, on a secondary basis, to the space research service.

(221A) The frequency 20007 kc/s may also be used, in emergency, in the search for, and rescue of, astronauts and space vehicles. Emissions must be confined in a band of 3 kc/s about this frequency.

(222) Intership radiotelegraphy may be used in the maritime mobile service between the frequencies 23,350 and 24,000 kc/s.

(223) The standard frequency is 25,000 kc/s.

(224) Limited to ship stations employing Al or F1 emissions.

(225) The frequency 27,120 kc/s is designated for industrial, scientific and medical purposes. Emissions must be confined within the limits of +0.6 percent of that frequency. Radiocommunication services operating within those limits must accept any harmful interference that may be experienced from the operation of industrial, scientific and medical equipment.

(226) In Region 2, Australia and New Zealand, the amateur service may operate between the frequencies 26,960 and 27,230 kc/s.

(228) Stations designed to use ionospheric scatter may operate only subject to agreements between administrations concerned and those whose services, operating in accordance with the Table, may be affected.

(229) Systems designed to use ionospheric scatter or other fixed service systems designed to operate over distances exceeding 800 km shall confine their emissions to the following bands:

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and shall have priority in Region 2 in the bands shown above for such use in that Region.

(230) In the case of the bands referred to in No. 229, which are limited to a particular Region the provisions of No. 117 shall apply and administrations shall avoid beaming such transmissions towards another Region unless specifically coordinated otherwise.

(231) Ionospheric scatter stations, existing on 1 January 1960, and not causing harmful interference to the other services to which the band is allocated, may continue to operate on frequencies now assigned until reaccommodated.

(232) Conventional (F2) long distance fixed service use of the band 29.7-30 Mc/s is not excluded in Region 2 provided that such use is coordinated between the administrations concerned.

(235) The band 39.986-40.002 Mc/s is also allocated, on a secondary basis, to the space research service.

(236) The frequency 40.68 Mc/s is designated for industrial, scientific and medical purposes. Emissions must be confined within the limits of ±0.05 percent of that frequency. Radiocommunication services operating within those limits must accept any harmful interference that may be experienced from the operation of industrial, scientific and medical equipment.

(237) Systems designed to use ionospheric scatter which may cause harmful interference to the broadcasting service prohibited.

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(253A) In Region 2, fixed, mobile and broadcasting service operations previously authorized in the band 73-74.6 Mc/s may continue to operate on a non-interference basis to the radio astronomy service.

(253B) In Cuba, the band 73-74.6 Mc/s is also allocated to the fixed, mobile and broadcasting services.

(259) The frequency 75 Mc/s is assigned to aeronautical marker beacons. Administrations shall refrain from assigning frequencies close to the limits of the guard-band to stations of other services which, because of their power or geographical position, might cause harmful interference to marker beacons.

(273) The frequency 121.5 Mc/s is the aeronautical emergency frequency in this band; mobile stations of the maritime mobile service may communicate on this frequency for safety purposes with stations of the aeronautical mobile service.

(273A) In the band 117.975-132 Mc/s and in the band 132-136 Mc/s where the aeronautical mobile (R) service is authorized, the use and development, for this service, of systems using space communication techniques may be authorized but limited initially to satellite relay stations of the aeronautical mobile (R) service. Such use and development shall be subject to co-ordination between administrations concerned and those having services operating in accordance with the Table, which may be affected.

(276) In Region 2 in the band 132-135 Mc/s, the aeronautical mobile (R) service shall operate on a primary basis subject to coordination between administrations concerned and those having services operating in accordance with the Table, which may be affected.

(281A) For the use of the band 136-137 Mc/s, see Recommendation No. 7A.

(281B) In Region 2, the band 136–137 Mc/s is also allocated to the fixed and mobile services until 1 January 1969. Thereafter, in Cuba, the band will continue to be allocated also to the fixed and mobile services.

(281E) In Regions 2 and 3, the band 137138 Mc/s is also allocated to the fixed and mobile services until 1 January 1969. Thereafter, in Cuba, Malaysia, Pakistan and the Philippines, the band 137-138 Mc/s will continue to be allocated also to the fixed and mobile services.

(281F) The band 137-138 Mc/s will be used mainly for research concerning the establishment, technical improvement, and maintenance of operational space systems.

(284A) In the band 144-146 Mc/s, artificial satellites may be used by the amateur service.

(285A) The frequencies 148.25+15 kc/s and 154.2+15 kc/s may be used for space telecommand, subject to agreement among the administrations concerned and those having services operating in accordance with the Table, which may be affected.

(285B) Stations operating in the fixed and mobile services may continue to use this band until 1 January 1969. This cessation date shall not apply in Austria, Bulgaria, Cuba, Hungary, Iran, Kuwait, Morocco, Pakistan, the Netherlands, Poland, the United Arab Republic, Yugoslavia and Roumania where the fixed and mobile services will continue to have equal primary status with the radionavigation-satellite service. (See Recommendation No. 6A.)

(287) The frequency 156.8 Mc/s is the international safety and calling frequency for the maritime mobile VHF radiotelephone service. Administrations shall ensure that a guard-band of 75 kc/s on each side of the frequency 156.8 Mc/s is provided. The conditions for the use of this frequency are contained in Article 35.

In the bands 156.025-157.425 Mc/s, 160.625-160.975 Mc/s and 161.475-162.025 Mc/s, each administration shall give priority to the maritime mobile service on only such frequencies as are assigned to stations of the maritime mobile service by that administration.

Any use of frequencies in these bands by stations of other services to which they are allocated should be avoided in areas where such use might cause harmful interference to the maritime mobile VHF radiotelephone

service.

(294) The band 183.1-184.1 Mc/s is also allocated, on a secondary basis, to the space research service.

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