MD-785 TEKNİK ÖZELLİKLERİ
| Frequency range |
VHF: 136 – 174 MHz
UHF: 400 – 470 MHz
|
| Number of channels |
1024
|
| Number of zones |
64 (with max. 16 channels each)
|
| Channel spacing (analog) |
12.5 / 20 / 25 kHz
|
| Channel spacing (digital) |
12.5 kHz
|
| Operating voltage |
13.6 ± 15% VDC
|
| Max. power consumption (in stand by) |
≤ 0.6 A
|
| Max. power consumption (during reception) |
≤ 2.0 A
|
| Max. current consumption (during transmission) |
5 W: ≤ 5 A
25 W: ≤ 8 A
45 W / 50 W: ≤ 12 A
|
| Frequency stability |
±1.5 ppm
|
| Antenna impedance |
50 Ω
|
| Dimensions (LxWxH) |
174 x 60 x 200 mm
|
| Weight |
1.7 kg
|
| LCD display |
220 x 176 pixels, 262,000 colours, 2.0 inches, 4 lines
|
| Transmitting power (adjustable) |
VHF: 1 – 25 W / 5 – 25 W / 5 – 50 W
UHF: 5 – 25 W / 5 – 45 W
|
| Modulation |
11 K0F3E at 12.5 kHz
14 K0F3E at 20 kHz
16 K0F3E at 25 kHz
|
| 4FSK digital modulation |
12.5 kHz (data only): 7K60FXD
12.5 kHz (data and voice): 7K60FXW
|
| Interfering signals and harmonics |
-36 dBm < 1 GHz
-30 dBm > 1 GHz
|
| Modulation limiting |
±2.5 kHz at 12.5 kHz
±4.0 kHz at 20 kHz
±5.0 kHz at 25 kHz
|
| Hum and noise |
40 dB at 12.5 kHz
43 dB at 20 kHz
45 dB at 25 kHz
|
| Adjacent channel selectivity |
60 dB at 12.5 kHz
70 dB at 20/25 kHz
|
| Audio sensitivity |
+1 to -3 dB
|
| Audio distortion |
≤ 3 %
|
| Digital vocoder type |
AMBE+2™
|
| Sensitivity (analog) |
0.3 μV (12 dB SINAD)
0.22 μV (typical) (12 dB SINAD)
0.4 μV (20 dB SINAD)
|
| Sensitivity (digital) |
0.3 μV / BER 5%
|
| Adjacent channel selectivity |
TIA-603: 65 dB at 12.5 kHz / 75dB at 20 and 25 kHz
ETSI: 60 dB at 12.5 kHz / 70 dB at 20 and 25 kHz
|
| Spurious response rejection |
TIA-603: 75 dB at 12.5/20/25 kHz
ETSI: 75 dB at 12.5/20/25 kHz
|
| Signal-to-noise ratio (S/N) |
40 dB at 12.5 kHz
43 dB at 20 kHz
45 dB at 25 kHz
|
| Nominal audio power output |
Internal 3 W at 20 Ω, external 7.5 W at 8 Ω
|
| Audio distortion |
≤ 3 %
|
| Audio sensitivity |
+1 to -3 dB
|
| Conducted spurious emission |
-57 dBm
|
| Operating temperature range |
-30 °C to +60 °C
|
| Storage temperature range |
-40 °C to +85 °C
|
| Protection against dust and moisture |
IP54
|
| Shock and vibration resistance |
MIL-STD-810 C/D/E/F/G
|
| Relative humidity |
MIL-STD-810 C/D/E/F/G
|
| Time to first fix (TTFF) cold start |
< 1 minute
|
| Time to first fix (TTFF) warm start |
< 10 seconds
|
| Horizontal accuracy |
< 10 m
|
