POLMAR DB-50M, User Manual

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Specifications
General
Frequency
Range
RX/TX:144~146 MHz, 430~440 MHz
Number of
Channels
758 channels
Channel
Spacing
25 KHz(Wide band)
20 KHz(Middle band - Not in use in Italy)
12.5 KHz (Narrow band)
Phase-locked
Step
2.5 KHz 5 KHz 6.25 KHz 10 KHz 12.5 KHz
15 KHz 20 KHz 25 KHz 30 KHz 50 KHz
Operating
Voltage
13.8V DC ±15%
Squelch Carrier/CTCSS/DCS/DTMF
Frequency
Stability
±2.5 ppm
Operating
Temperature
-20~+60 °C
Dimensions 139 (W) x 40 (H) x 212 (D) mm
Weight about 1.14 kg
Receiver
Wide band Narrow band
Sensitivity (12dB SINAD) ≤0.25 μV ≤0.35 μV
Audio Response
+1~-3 dB
(0.3~3 KHz)
+1~-3 dB
(0.3~2.55 KHz)
Hum & Noise ≥45 dB ≥40 dB
Audio distortion ≤5%
Audio power output
>
2W @ 10%
Transmitter
Wide band Narrow band
Power Output
50 W / 25 W / 10 W / 5 W (VHF)
40 W / 25 W / 10 W / 5 W (UHF)
Modulation 16KΦF3E 11KΦF3E
Hum & Noise ≥40 dB ≥36 dB
Audio Response
+1~-3 dB
0.3~3 KHz)
+1~-3 dB
(0.3~2.55 KHz)
Audio Distortion ≤5%
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