HYTERA MD 785 ARAÇ – SABİT TELSİZ
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
Transmitter
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™
Receiver
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
Environmental conditions
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
GPS (only MD785G)
Time to first fix (TTFF) cold start
< 1 minute
Time to first fix (TTFF) warm start
< 10 seconds
Horizontal accuracy
< 10 m
