HYTERA MD655 TEKNİK ÖZELLİKLERİ
| Frequency range |
VHF: 136 – 174 MHz UHF: 400 – 470 MHz |
| Supported operating modes |
|
| 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) |
1 W: ≤ 3 A 25 W: ≤ 8 A |
| Frequency stability |
±0.5 ppm |
| Antenna impedance |
50 Ω |
| Dimensions (LxWxH) |
165 x 46 x 140 mm |
| Weight |
1050 g |
| Transmitting power |
1 – 25 W (adjustable) |
| 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 |
on the handheld microphone 1.5 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 |
| ESD |
IEC 61000-4-2 (Level 4) ± 8 kV (contact) ± 15 kV (air) |
| 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 |
