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MODEL CHART AND TECHNICAL SPECIFICATIONS
*Availability subject to the laws and regulations of individual countries.
Transmitter
VHF
*Frequencies - Full Bandsplit
VHF
136-174
MHz
Channel Spacing
12.5/20/25 kHz
Frequency Stability
(-25°C to +55°C, +25° Ref.)
±2.5 ppm
Power
136 - 174 MHz:1-5W
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
<5% typical
Receiver
VHF
*Frequencies - Full Bandsplit
VHF 136-174 MHz
Channel Spacing
12.5/20/25 kHz
Sensitivity (12 dB SINAD) EIA
Sensitivity (20 dB SINAD) ETS
0.35 µV typical
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
Summary of Contents for GP1280 Series
Page 1: ...Professional Radio GP Series VHF 136 174MHz Service Information Issue November 2004 ...
Page 24: ...2 14 THEORY OF OPERATION ...
Page 34: ...3 10 TROUBLESHOOTING CHARTS ...
Page 38: ...4 4 VHF PCB SCHEMATICS PARTS LISTS ...
Page 50: ...4 16 VHF PCB 8486062B12 Parts List Intentionally Left Blank ...
Page 54: ...4 20 VHF PCB 8486101B09 Schematics GP1280 Intentionally Left Blank ...
Page 64: ...4 30 VHF PCB 8486062B14 Parts List Intentionally Left Blank ...
Page 108: ...4 74 VHF PCB 8486473Z04 Radio Parts List Intentionally Left Blank ...