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Hytera MD-788
Digital Mobile Radios
Professional digital mobile radio !
Deskripsi
Radio seluler MD785 / MD785G menawarkan serbaguna fungsi digital yang memungkinkan pertukaran informasi dalam segala macam situasi, meningkat tingkat respons operasi dan insiden. Dengan desain ergonomisnya, mudah untuk mengoperasikan antarmuka dan luar biasa kualitas, MD785 / MD785G adalah solusi ideal untuk di dalam kendaraan atau desktop persyaratan komunikasi.
| General data MD-788 | |
| Frequency range | VHF: 136 – 174 MHz
UHF: 400 – 470 MHz UHF2: 450 – 520 MHz UHF3: 350 – 400 MHz |
| Supported operating modes | • DMR Tier II in acc. with
ETSI TS 102 361-1/2/3 • Simulcast • XPT Digital Trunking • DMR Tier III in acc. with ETSI TS 102 361-1/2/3/4 • Analogue, MPT 1327 |
| Channel capacity | 1024 |
| Number of zones | 64 (with max. 16 channels each) |
| Channel spacing | 12.5 / 20 / 25 kHz (analogue)
12.5 kHz (digital) |
| Operating voltage | 13.6 ± 15% VDC |
| Max. power consumption (in stand by) | ≤ 0.6 A |
| Max. power consumption (during reception) | ≤ 2.0 A |
| Max. power 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 (W × H × L) | 174 × 60 × 200 mm |
| Weight | 1,7 kg |
| LCD display | 220 × 176 pixel, 262,000 colors,
2.0 inch, 4 lines |
| Transmitter MD- 788 | |
| 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 (< 1GHz)
-30 dBm (> 1GHz) |
| 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 – 3dB |
| Nominal audio distortion | ≤ 3 % |
| Digital vocoder type | AMBE+2TM |
| Receiver MD-788 | |
| Sensitivity (analogue) | 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 ETSI |
65 dB at 12.5 kHz / 75 dB at 20 / 25 kHz
60 dB at 12.5 kHz / 70 dB at 20 / 25 kHz |
| Spurious response rejection
TIA-603 ETSI |
75 dB at 12.5 / 20 / 25 kHz
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 3W at 20Ω,
external 7.5W at 8Ω |
| Nominal audio distortion | ≤3% |
| Audio sensitivity | + 1 to – 3dB |
| Conducted spurious emission | < -57dBm |
