Frequencies in the VHF and UHF Bands for Use as "Wide Area" Channels and "Common Use" Channels

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1 TRAA Spectrum Management Terrestrial Radiocommunication Agreements and Arrangements Frequencies in the VHF and UHF Bands for Use as "Wide Area" Channels and "Common Use" Channels Aussi disponible en français

2 Note All persons making use of this consolidation are reminded that the documents included herein are provided only for convenience of reference. This consolidation is for the guidance of those engaged in radiocommunications in Canada. The information contained in this document is subject to change without notice. While every reasonable effort has been made to ensure accuracy, no warranty is expressed or implied. For more details, please contact the Terrestrial Services Frequency Management Division (International Systems). The agreements and arrangements contained herein have been negotiated under the authority of the Government of Canada by the Department of Communications whose spectrum management and telecommunications programs have been transferred to Industry Canada. All notes in square brackets [ ] were added for clarification purposes. Prepared by: Industry Canada Radio Regulatory Branch 300 Slater Street Ottawa, Ontario K1A 0C8 Publication Date: December 1993

3 UNITED STATES DEPARTMENT OF COMMERCE NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION INTERDEPARTMENT RADIO ADVISORY COMMITTEE WASHINGTON, D.C July 27, Director, Telecommunications Regulation Branch Telecommunication Regulatory Branch Journal North Building 300 Slater Street Ottawa, Ontario K1A 0C8 Dear Sir: NTIA has recently allotted two sets of frequencies in the VHF and UHF bands to be reserved for use as "wide area" channels and "common use" channels , and MHz have been allotted as wide area channels to provide for intermittent wide area requirements of a transient nature. It is envisioned that many of these assignments will be U.S. wide. It occurs to us that Canada probably has the same type of requirement to be able to use a frequency anywhere in Canada on a short term basis. If you are in a position to do so, you might want to consider a similar allocation for these frequencies in Canada , and MHz have been allotted as common use frequencies to provide for radiocommunications that do not justify the assigning of a radio frequency exclusively to that use i.e., the frequency can be shared with other users. It is intended that there will be multiple users of these frequencies within interference range but the nature of the frequency use would allow sharing of the channel. Hopefully, Canada has a requirement for a complement of frequencies to meet low priority or low duty cycle frequency requirements that could be satisfied using one of these frequencies on a shared non-priority basis.... /2 1

4 - 2 - Attached are the rules we have established for use of both categories of use. We would appreciate your comments on the possibility of Canada using these frequencies in the same manner or if this is not possible, comment on our use of MHz as a "wide area channel" U.S. wide. In the light of no formal coordination agreement for the MHz band, any comments you have on our use of and MHz as wide area channels would also be appreciated. If Canada has no requirement for common use channels, we would continue to coordinate our use of MHz as we have been under Arrangement D. Attachments A. M. Corrado Executive Secretary 2

5 ATTACHMENT Allotment of , , and for Wide Area Use These allotments are to provide for intermittent wide area requirements of a transient nature. The frequencies , , and MHz are allotted for use by U.S. Government agencies and may be authorized for use by agencies as required upon application. The designed frequencies are available on a shared non-priority basis only and will not be authorized for exclusive use of any one agency. No protection from interference will be provided to any station operating on these frequencies from other stations operating on the same frequency. The use of equipment with coded squelch is strongly encouraged to reduce interference from other users. In all cases, the minimum ERP necessary to support the intended use shall be employed. However, the maximum transmitter output power of the base station shall not exceed 30 watts and the mobile output power shall not exceed 30 watts. The gain of the base station antenna shall not exceed 7 decibels and the height of the base station antenna shall not exceed 20 feet above the height of the structure containing the transmitting equipment. The station class is limited to FB, FC, ML or MS and portable fixed (FX, S016). All equipment shall be in conformity with 5.4 of the Manual. Repeater operations are not permitted. All applications for the use of these frequencies must bear record note S352 which reads, "This assignment is for intermittent wide area requirements of a transient, itinerant nature pursuant to Section of the Manual." 3

6 ATTACHMENT Allotment of , and MHz as Common Use Frequencies These allotments are to provide for radiocommunications that do not justify the assigning of a radio frequency exclusively to that use i.e., the frequency can be shared with other users. The frequencies , and MHz are allotted for use by U.S. Government agencies and may be authorized for use by agencies as required upon application. All operations shall be authorized in accordance with Section The frequencies are available on a non-priority basis only and will not be authorized for the exclusive use of any one agency. No protection from interference will be provided to any station operating on these frequencies from other stations operating on the same frequency. Critical services involving safety of life and property should not employ these frequencies in view of their unprotected status. The use of equipment with coded squelch is strongly encouraged to reduce nuisance interference from other users. In all cases, the minimum ERP necessary to support the intended use shall be employed. However, the maximum transmitter output power of the base station shall not exceed 30 watts and the mobile output power shall not exceed 30 watts. The gain of the base station antenna shall not exceed 7 decibels and the height of the base station antenna shall not exceed 20 feet above the height of the structure containing the transmitting equipment. The station class is limited to FB, FC, ML or MS and portable fixed (FX, S016). All equipment shall be in conformity with 5.4 of the Manual. Repeater operations are not permitted. All applications for the use of these frequencies must bear record note S353 which reads "This assignment is for a common use frequency pursuant to Section of the Manual." 4

7 Journal Tower North 300 Slater Street Ottawa, Ontario K1A 0C (DOS-F2) Executive Secretary Interdepartment Radio Advisory Committee (IRAC) 1325 G Street, N.W. Suite 250 Washington, D.C U.S.A. January 17, 1979 Dear Sir: This has reference to your letter of July 27, 1978, requesting our comments on the NTIA allotment of two sets of frequencies in the VHF and UHF bands for use as "wide area" channels and "common use" channels throughout the U.S. Your proposal has been examined in light of possible similar Canadian requirements. We have concluded that the NTIA concept is a good one and certainly would enhance the processing of frequency assignments intermittent or transient in nature involving short-term "temporary" applications. A mutual Canada/U.S. arrangement on common frequencies would of course, offer maximum practical advantages in the border areas. The frequencies listed in your letter have been evaluated for compatibility with the existing Canadian ECM environment and actual requirements and we are able to say that "common use" of the UHF frequencies appears to be practical. With regard to the VHF frequencies, however, the rather extensive use of these frequencies in Canada would preclude their use as proposed as well as their "uncoordinated" use. Our specific comments relative to the frequencies in question are as follows: MHz and MHz - No objections, subject to favourable U.S./Canada Coordination; MHz - No objections on a non-interference basis. This frequency is used in Canada exclusively for radio astronomy purposes; 5... /2

8 MHz, MHz - Agree, common U.S./Canada usage on a shared MHz non-priority basis. While we have not formulated any firm policy as yet on the condition of assignment of the UHF frequencies, we envision that restrictions on frequency use similar to those adopted in the U.S. will be implemented. We regret the delay in responding to your letter which was unavoidable due to national coordination requirements. Yours very truly, Dr. John demercado Director General Telecommunication Regulatory Service 6