Caltta PM790, Maintenance Manual

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PM790 Radio Maintenance Manual
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1.3Specification
General
Frequency
UHF1: 400-470MHz UHF3: 350-400MHz
VHF: 136-174MHz
Channel Capacity 1024
Zone Capacity 64 (maximum 32 channels per zone)
Channel Spacing 12.5kHz/20KHz/25KHz
Operating Voltage DC 13.6V
±
15%
Size (H*W*D) 49*178*156mm
Weight <1.8Kg
Screen 2.0” TFT LCD, 220*176, 4 Lines
Vocoder AMBE++
Receiver
Sensitivity(Analog) 0.3uV (12dB SINAD)
Sensitivity(Digital) 0.3uV (5% BER)
Adjacent Channel
Selectivity
50 dB@12.5KHz /75 dB@25KHz (TIA603D)
60 dB@12.5KHz /70 dB@25KHz (ETS)
Intermodulation
75 dB (TIA603D)
70 dB (ETS)
Spurious Rejection
75 dB (TIA603D)
70 dB (ETS)
Blocking or
Desensitization
90dB (TIA603D)
84dB (ETSI)
Co-channel Rejection -12~0 dB @12.5KHz
Hum and Noise -40 dB@12.5KHz /-45 dB@25KHz
Rated Audio Power 3W (Build-in)
Max Audio Power 6W (Build-in)
Audio Distortion @
Rated Audio
3%
Audio Response +1
～
-3dB
Conducted Spurious
Emission
-57 dBm (TIA603D)
Transmitter
Low Power Output
1-24W/5-44W (UHF3/UHF1);
1-24W/5-49W (VHF)
High Power Output
2-25W/6-45W (UHF1/UHF2/UHF3);
2-25W/6-50W (VHF)
FM Modulation 12.5KHz: 11K0F3E / 25KHz: 16K0F3E
4FSK Digital 12.5KHz Data Only: 7K60F1D&7K60FXD