Service manual

Specifications - Professional GP1280 Radio 6-3
*Availability subject to the laws and regulations of individual countries.
Transmitter
*Frequencies - Full Bandsplit VHF: 136-174 MHz
UHF: 403-470 MHz
UHF2: 450-527 MHz
Channel Spacing 12.5/20/25 kHz
Frequency Stability
(-25°Cto+55°C, +25° Ref.)
±2.5 ppm (VHF, UHF)
±5.0 ppm (UHF2)
Power 136 - 174 MHz: 1-5W
403 - 470 MHz: 1-4W
450 - 527 MHz: 1-4W
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 @ 20/25 kHz
Audio Response (300 - 3000 Hz) +1 to -3 dB
Audio Distortion < 3% Typical
Receiver
*Frequencies - Full Bandsplit VHF: 136-174 MHz
UHF: 403-470 MHz
UHF2: 450-527 MHz
Channel Spacing 12.5/20/25 kHz
Frequency Stability
(-25°Cto+55°C, +25° Ref.)
±2.5 ppm
Sensitivity (12 dB SINAD) EIA
Sensitivity (20 dB SINAD) ETS
0.25 µV typical
0.50 µV typical
Intermodulation EIA 65 dB (UHF2)
70 dB (VHF, UHF)
Adjacent Channel Selectivity 60 dB @ 12.5 kHz / 70 dB @ 20/25 kHz
Spurious Rejection >70dB
Rated Audio 0.5W
AudioDistortion@RatedAudio <3%typical
Hum & Noise -40 dB @ 12.5 kHz (VHF, UHF)
-45 dB @ 12.5 kHz (UHF2)
-50 dB @ 20/25 kHz (VHF, UHF, UHF2)
Audio Response (300 - 3000 Hz) +1 to -3 dB
Conducted Spurious Emission -57 dBm <1 GHz
-47 dBm >1 GHz
ETS 300 086