These regulations are scanned directly from Canadian Regulation RSS-210 A6.2
RSS-210
A6.2
General Mobile Radio Service (GMRS) Devices
A6.2.1
Channel Frequencies
The following I5-channel carrier frequencies are available for simplex communications in the General Mobile Radio Service (GMRS), in MHz:
|
Channel |
Frequency |
|
1 |
462.5500 |
|
2 |
462.5625 |
|
3 |
462.5750 |
|
4 |
462.5875 |
|
5 |
462.6000 |
|
6 |
462.6125 |
|
7 |
462.6250 |
|
8 |
462.6375 |
|
9 |
462.6500 |
|
10 |
462.6625 |
|
11 |
462.6750 |
|
12 |
462.6875 |
|
13 |
462.7000 |
|
14 |
462.7125 |
|
15 |
462.7250 |
The following 8-channel carrier frequencies are reserved for possible future use as repeater input channels and are not available for simplex communications:
|
Channel |
Frequency |
|
16 |
467.5500 |
|
17 |
467.5750 |
|
18 |
467.6000 |
|
19 |
467.6250 |
|
20 |
467.6500 |
|
21 |
467.6750 |
|
22 |
467.7000 |
|
23 |
467.7250 |
A6.2.2
Emission Types and Modulation Requirements
GMRS transmitters are permitted to transmit only the following emission types: AID, FID, GID, HID, JiD, RID, A3E, F3E, G3E, H3E, BE, R3E or F2D. Non-voice emission is only permitted for selective calling or tone-operated squelch to establish or continue a voice communication, digital data transmission of location information or text messaging.
Non-voice communication shall be subject to the following restrictions:
(1) A GMRS unit may transmit tones to make contact or to continue communications with a particular GMRS unit. lfthe tone is audible (greater than 300 Hz), it may be transmitted continuously no longer than 15 seconds at a time. lfthe tone is inaudible (300 Hz or less), it may be transmitted continuously only while the user is talking.
(2) The GMRS unit may transmit digital data containing location information, or requesting location information from one or more other GMRS units, or containing a brief text message to another specific GMRS unit. Digital data transmissions must be initiated by a manual action or command of the user. However, a GMRS unit receiving an interrogation request may automatically respond with its location. Digital data transmissions shall not exceed I second, and shall be limited to one transmission within a 30-second period. However, a GMRS unit may automatically respond to more than one interrogation request received within a 30-second period.
For emission types FID, GID, G3E, F3E or F2D, the peak frequency deviation shall not exceed: +/-:5 kHz.
GMRS transmitters must include an audio frequency low-pass filter, unless they comply with the appropriate emission masks in Section A6.2.5, below. The filter must be between the modulation limiter and the modulated stage of the transmitter. The filter attenuation must be as follows:
for 3 kHz ~ f ~ 20 kHz, the attenuation is at least 60 10glO(f, kHz/3) dB greater than the attenuation at I kHz, and for f> 20 kHz, the attenuation is at least 50 dB greater than the attenuation at I kHz.
A6.2.3
Emission Bandwidth
The authorized bandwidth for emission types HID, JlD, RID, H3E, BE and R3E is 4 kHz; for emission types AID and A3E is 8 kHz; and for emission types FID, GID, F3E, G3E and F2D is 20 kHz.
A6.2.4
Output Power
A GMRS transmitter may transmit with a maximum power of 2.0 W e.r.p.
A6.2.5
Unwanted Emissions
Unwanted emissions shall be attenuated at least below the unmodulated carrier power in accordance with the following:
(1) For emission types AID, A3E, FID, GID, F3E, G3E and F2D with filtering:
.
25 dB, measured with a bandwidth of 300 Hz, on any frequency removed from the centre frequency of the authorized bandwidth by more than 50% up to and including 100% of the authorized bandwidth;.
35 dB, measured with a bandwidth of 300 Hz, on any frequency removed from the centre frequency of the authorized bandwidth by more than 100% up to and including 250% of the authorized bandwidth; and.
43 dB + 10 loglO(carrier power in watts) dB, measured with a bandwidth of at least 30 kHz, on any frequency removed from the centre ftequency of the authorized bandwidth by more than 250% of the authorized bandwidth.(2) For emission types AID, A3E, FID, GID, F3E, G3E and F2D without filtering:
.
83 loglO(fd/5) dB, measured with a bandwidth of 300 kHz, on any ftequency removed ftom the centre ftequency of the authorized bandwidth by a displacement frequency (fd in kHz) of more than 5 kHz, up to and including 10 kHz;.
116 loglO(fd/6.1) dB (fd in kHz) measured with a bandwidth of 300 kHz, or if less,50 + 10 lOglO(TP) dB (TP is total power in the emission bandwidth), on any frequency removed from the centre of the authorized bandwidth by a displacement frequency fd (kHz) of more than 10kHz, up to and including 250% of the authorized bandwidth; and
.
43 dB + 10 loglO(carrier power in watts) dB, measured with a bandwidth of at least 30 kHz, on any ftequency removed ftom the centre ftequency of the authorized bandwidth by more than 250% of the authorized bandwidth.(3) For emission types HID, JID, RID, H3E, BE and R3E:
.
25 dB, measured with a bandwidth of 300 Hz, on any ftequency removed ftom the centre ftequency of the authorized bandwidth by more than 50% up to and including 150% of the authorized bandwidth;.
35 dB, measured with a bandwidth of 300 Hz, on any frequency removed ftom the centre frequency of the authorized bandwidth by more than 150% up to and including 250% of the authorized bandwidth;.
43 dB + 10 lOglO( carrier power in watts) dB, measured with a bandwidth of at least 30 kHz, on any frequency removed from the centre ftequency of the authorized bandwidth by more than 250% of the authorized bandwidth.A6.2.6
Frequency Stability and Other Frequency Capability Requirements
The carrier ftequency tolerance shall be better than::l:5 ppm.
GMRS transmitters must be crystal controlled.
All frequency determining circuitry, including crystals, and programming controls must be internal to the transmitter and made inaccessible to the user from the exterior of the unit.
A6.2.7
Restrictions
.
GMRS units shall not be designed to interconnect to the public switched network.. GMRS units shall not be designed to transmit data in store-and-forward packet operation mode.
. GMRS units shall not provide the user with the capability to receive on GMRS channels
16 to 23.