33cm

 

Southern California 33cm Band Plan (902 - 928MHz)

Adopted May 19, 1990

FREQUENCY (MHz) USAGE
902.0000 - 902.1000 Weak Signal
902.1000 - 903.0000 Repeater and Point-to-Point Link INPUTS (See Note 1)
902.7000 -- TEST PAIR INPUT --
903.0000 - 904.0000 Non-Amateur Automatic Vehicle Monitoring [AVM]
904.0000 - 912.0000 Non-Amateur Automatic Vehicle Monitoring [AVM]
912.0000 - 912.1000 Digital (See Note 2)
912.2000 - 912.2000 Digital (See Note 3)
912.2000 - 912.9000 ATV Simplex and ATV Repeater Input (See Note 4)
913.2500 ATV Visual Carrier
917.7500 ATV Aural Carrier
917.9000 - 918.0000 Digital (See Note 5)
918.0000 - 926.0000 Non-Amateur Automatic Vehicle Monitoring [AVM]
918.0000 - 926.0000 ATV Repeater Output [coordinated with AVM users on a case-by-case basis]
919.2500 ATV Repeater Visual Carrier
923.7500 ATV Repeater Aural Carrier
926.0000 - 927.0000 Non-Amateur Automatic Vehicle Monitoring [AVM]
927.0000 - 927.1000 Digital (See Note 6)
927.1000 - 928.0000 Repeater and Point-to-Point Link OUTPUTS (7)
927.6000 -- SIMPLEX --
927.7000 -- TEST PAIR OUTPUT --
927.8000 -- SIMPLEX --

 
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Notes from the 1990 SCRRBA 33cm Band Planning Meeting

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Information for 33cm Coordination Recipients Prior to December 7, 1989
 

NOTES FOR THE ABOVE BAND PLAN TABLE

(1) & (7) - Point-to-point links will be ground to communications site only.  Comm. site to comm. site links will not be allowed.

Repeater and Point-to-Point Links

Emissions = 13K6F3E, +/-2.5kHz Maximum Deviation
3kHz Highest Applied Audio Frequency
Transmitter Audio Lowpass Filter Attenuation for 3kHz to 20kHz = 100log(f/3) where f = frequency in kHz
Channel Spacing = 12.5kHz (902.1125/927.1125 to 902.9875/927.9875)
Repeater Spacing = 25MHz (72 pairs)
Frequency Tolerance (fixed and mobile) = 1.5ppm (0.00015%)

(2), (3), & (5) - Wideband digital ground transmit only

(4) - Ground transmit only, or repeater input paired with out-of-band repeater output.  Recommended minimums:
 

Frequency (MHz) Tolerance or Limit Description
Below 909.2500 > -40dBc Output Emissions
Below 910.2500 > -33dBc Output Emissions
913.2500 +/-25kHz Visual Carrier
917.7500 +/-25kHz Aural Carrier
Above 918.2500 > -33dBc Output Emissions
NTSC Compatible Transmissions
Visual Modulation > 10% of Peak Sync.
Aural Modulation < +/-50kHz Peak Deviation
dBc = Decibels below peak visual carrier.  Therefore, > -40dBc = greater than 40 decibels below peak carrier.

(6) - Wideband digital communications site transmit only

 

 

Last modified: December 27, 2004