SRSP-312.7 — Technical Requirements for Radio Systems Operating in the Fixed Service, in the Band 12.7-13.25 GHz

Issue 1
August 30, 1986

Spectrum Management
Standard Radio System Plan

1. Intent

1.1 This Standard Radio System Plan (SRSP) states the minimum technical requirements for the efficient use of the frequency band 12.70 - 13.25 GHz by:

  • Very High Capacity Microwave (VHCM) systems (12.7-13.2 GHz)
  • TV Pick-up (13.15-13.25 GHz)

1.2 This SRSP is intended to be employed in the design and specification of radio systems and equipment and in the evaluation of technical applications for new radio facilities or modification to radio systems submitted in accordance with the current issue of Radio Standards Procedure - 113 (RSP-113).

1.3 This SRSP specifies equipment characteristics relating to efficient spectrum usage only and is not to be regarded as a comprehensive specification for equipment design and/or selection.

2. General

2.1 Revision of this SRSP will be made as required.

2.2 Radio systems conforming to these technical requirements will be given priority in licensing over non-standard radio systems operating in this band.

2.3 When potential conflicts between radio systems cannot be resolved by the parties concerned the Department should be advised, and after consultation with the parties concerned, it will determine the necessary modifications and schedule of modifications to resolve the conflicts.

2.4 Even if a radio system conforms with the requirements of this SRSP, modifications may be required to the system whenever harmful interferenceFootnote 1 is caused to other radio stations or systems.

2.5 The Department may require the licensees and/or applicants to use receiver selectivity characteristics that provide rejection of harmful interference.

2.6 The Department may require independent facilities operating in the same or adjacent areas to use orthogonal antenna polarizations. In large metropolitan areas where a high demand for use of this band is expected, the Department may require changes in antennas, transmit or receive locations, transmitter power levels, filters, and/or operating procedures to ensure efficient use of spectrum.

2.7 It should be noted that the fixed terrestrial service shares this band equally on the basis of primary status with the fixed-satellite (Earth-to-space) service.

3. Related Documents

3.1 The current issues of the following documents are applicable:

3.1.1 Spectrum Utilization Policy Gen (SP-GEN)General Information Related to Spectrum Utilization and Radio Systems Policies.

3.1.2 Spectrum Utilization Policy 312.7 (SP 312.7)Spectrum Utilization Policy for the Fixed Service and the Fixed-Satellite Service in the Band 12.7-13.25 GHz.

3.1.3 Radio Standards Procedure 113 (RSP 113)Application Procedures for Planned Radio Stations above 890 MHz in Terrestrial Fixed Services.

3.1.4 Broadcast Procedure 23 — Technical Standards and Procedures for Broadcasting Receiving Undertakings (Cable Television).

3.2 The above documents are available on request from the Department of Industry headquarters in Ottawa or from regional offices of the Department located in Vancouver, Winnipeg, Toronto, Montreal or Moncton.

4. Very High Capacity Microwave

4.1 Definition

Very High Capacity Microwave (VHCM) is a fixed service currently defined for the transmission of four or more television signals for the purpose of CATV distribution.

4.2 Frequency Plan

4.2.1 Amplitude Modulated VHCM

Amplitude modulated VHCM systems shall use channels spaced at 6 MHz (see Annex 1), corresponding to VHF television channelling on cable systems in accordance with Broadcast Procedures 23.

4.2.2. Frequency Modulated VHCM

Frequency modulated VHCM systems shall use two interleaved series of channels, F1 and F2, each having a channel spacing of 25 MHz (see Annex 2). The two series may be combined in a single facility, using orthogonal polarization between them for separation, providing a capacity of forty channels, or they may be used by separate facilities in the same area with a capacity of twenty channels each. Licensed bandwidth will be 12.5 MHz per R.F. Channel.

4.2.3 In large metropolitan areas where frequency congestion in this band is likely, the establishment of amplitude modulated and frequency modulated systems may be restricted to one or the other at the discretion of the Regional Director according to the local situation.

4.2.4 Normally, multipoint systems will use amplitude modulation and multihop point to point systems will use frequency modulation.

5. TV pick-up

5.1 Definition

5.1 TV pick-up is a fixed service between a temporary remote television camera location and the studio. A TV pick-up may consist of a camera to mobile studio link and a mobile studio to TV broadcast studio link.

5.2 Frequency Plan

5.2.1 There are four RF channels available in the band 13.15-13.25 GHz for TV pick-up as follows:

RF Channels in the Band 13.15-13.25 GHz for TV pick-up
Channel Frequency
1 13.200 - 13.225 GHz
2 13.225 - 13.250 GHz
3 13.150 - 13.175 GHz
4 13.175 - 13.200 GHz

5.2.2 In the band 13.15 - 13.2 GHz, the Department will only authorized TV pick-up use on a case-by-case basis in certain geographic areas provided such use does not cause harmful interference to VHCM systems nor claim protection from interference from VHCM.

5.2.3 TV pick-up users will share the channels allocated to this service. They will coordinate their use on an event basis.

5.2.4 TV Pick-up from mobile platforms (land, water or airborne) can be approved on condition that such use is temporary and has been coordinated with other fixed service users in the affected geographic area.

5.2.5 When operations within 50 kilometres of the U.S./Canada border are planned, the Department should be consulted as certain arrangements may be required with the U.S.

6. Transmitter Characteristics

6.1 The transmitter power delivered to the antenna input shall not exceed 10 watts (+10 dBW) per RF channel.

6.2 The assigned or reference frequency of the emission shall be maintained within .01%.

6.3 All significant emissions from the transmitter shall be contained within the licensed bandwidth.

7. Antenna Characteristics

The smoothed directivity pattern in the horizontal plane of the antenna for both the E and H fields with vertical and horizontal polarization must remain within the envelope shown in Figure 1:

  • Envelope (a) for TV pick-up
  • Envelope (b) for VHCM

8. Maximum Equivalent Isotropically Radiated Power

8.1 The maximum equivalent isotropically radiated power (e.i.r.p.) from the antenna of a VHCM transmitter shall not in any case exceed +55 dBW per RF channel.

8.2 The maximum e.i.r.p. from the antenna of a TV pick-up transmitter shall not in any case exceed +45 dBW per RF channel.

9. Avoidance of the Geostationary Satellite Orbit

As far as practicable, sites for transmitting terrestrial stations, in the fixed service, employing maximum values of e.i.r.p. exceeding +45 dBW in the frequency band 12.7- 13.25 GHz, should be selected so that the direction of maximum radiation of any antenna will be at least 1.5° away from the geostationary-satellite orbit, taking intoaccount the effect of atmospheric refraction.

Issued under the authority of the Minister of Communications

S.N. Ahmed
Director General
Engineering Programs




Channel Arrangement for Amplitude Modulated VHCM (40 Channel Systems)

Annex 1 (part 1 of 2) - Channel Arrangement for Amplitude Modulated VHCM (40 Channel Systems)

Annex 1 (part 2 of 2)

Annex 1 (part 2 of 2) - Channel Arrangement for Amplitude Modulated VHCM (60 Channel Systems)


Annex 2 — Channel Arrangement for Frequency Modulated VHCM
Channel F1 F2
1 12 706.25  
2   12 718.75
3 12 731.25  
4   12 743.75
5 12 756.25  
6   12 768.75
7 12 781.25  
8   12 793.75
9 12 806.25  
10   12 818.75
11 12 831.25  
12   12 843.75
13 12 856.25  
14   12 868.75
15 12 881.25  
16   12 893.75
17 12 906.25  
18   12 918.75
19 12 931.25  
20   12 943.75
21 12 956.25  
22   12 968.75
23 12 981.25  
24   12 993.75
25 13 006.25  
26   13 018.75
27 13 031.25  
28   13 043.75
29 13 056.25  
30   13 068.75
31 13 081.25  
32   13 093.75
33 13 106.25  
34   13 118.75
35 13 131.25  
36   13 143.75
37 13 156.25  
38   13 168.75
39 13 181.25  
40   13 193.75

 

Figure 1 - Minimum Antenna Characteristics - Frequency band 12.7-13.25 GHz. Measured radiation pattern in the horizontal plane must be within these limits for vertical or horizontal polarizations

Figure 1 - Minimum antenna characteristics — Frequency band 12.7-13.25 GHz


Footnotes

  1. 1 Harmful interference is defined as interference which endangers the functioning of a radionavigation service or of other safety services or seriously degrades, obstructs, or repeatedly interrupts a radiocommunications service operating in accordance with regulations and technical requirements laid down by the Minister of Industry under the Radiocommunications Act.
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