Motorola GP1280 Series, Basic Service Manual

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Specifications - Professional GP300 Series Radios 6-7
*Availability subject to the laws and regulations of individual countries.
Transmitter UHF/VHF/300R1 LB
*Frequencies - Full Bandsplit
VHF 136-174 MHz
UHF 403-470 MHz
300R1 300-350MHz
LB1 29.7-42 MHz
LB2 35-50 MHz
Channel Spacing 12.5/20/25 kHz
Frequency Stability
(-25°C to +55°C, +25° Ref.)
±2.5 ppm @ 12.5kHz
±5.0 ppm @ 25 kHz
±5.0 ppm (300R1)
±10ppm
Power
136 - 174 MHz: 1-5W
403 - 470 MHz: 1-4W
300 - 350 MHz: 1-4W
1-6W
Modulation Limiting
±2.5 @ 12.5 kHz
±4.0 @ 20 kHz
±5.0 @ 25 kHz
FM Hum & Noise -40 dB typical
Conducted/Radiated Emission
-36 dBm <1 GHz
-30 dBm >1 GHz
Adjacent Channel Power
-60 dB @ 12.5 kHz
-70 dB @ 25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Audio Distortion
<3% typical
<5% typical (300R1)
Receiver UHF/VHF/300R1 LB
*Frequencies - Full Bandsplit
VHF 136-174 MHz
UHF 403-470 MHz
300R1 300-350 MHz
LB1 29.7-42 MHz
LB2 35-50 MHz
Channel Spacing 12.5/20/25 kHz
Sensitivity (12 dB SINAD) EIA
Sensitivity (20 dB SINAD) ETS
0.25 µV typical
0.35 µV typical (300R1)
0.50 µV typical
Intermodulation EIA 65 dB
Adjacent Channel Selectivity
60 dB @ 12.5 kHz
70 dB @ 25 kHz
Spurious Rejection >70 dB
Rated Audio 0.5W
Audio Distortion @ Rated Audio <3% typical
Hum & Noise
-45 dB @ 12.5 kHz
-50 dB @ 20/25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Conducted Spurious Emission
-57 dBm <1 GHz
-47 dBm >1 GHz
ETS 300 086