型号 : JHS-770S/780D
 
规格：
 
Model JHS-770S JHS-780D
GMDSS compliance 
General  Communication mode  simplex/semi-duplex

simplex/duplex
Frequency range  155.00 - 163.50MHz 
TX  155.00 - 163.50MHz (simplex/semi-duplex), 156.00

- 157.45MHz (duplex) 
RX  155.00 - 163.50MHz (simplex/semi-duplex), 160.60

- 162.05MHz (duplex) 
Output power  25W/1W 
Modulation type  radiotelephone G3E/F3E, DSC/ATIS

G2B/F2B 
Channel spacing  25kHz 
Frequency accuracy  within ±10x10-6
Antenna impedance  50Ω unbalanced
DSC CH70 receiver  built in
DSC CH70 frequency 156.525MHz
DSC received message LOG  20 distress messages
20(TX)+20(RX) non-distress messages
Channel capacity ITU/USA/Canada 57 channels max
Inland Waterway 57 channels max
Private 200 channels max (channel steps: 25kHz,

12.5kHz, 10kHz)
Weather 10 channels max
Memory 10 channels max
Inputs IEC-61162-1 GPS
IEC-61162-2 AIS
Outputs  IEC-61162-1  VDR/S-VDR 
Audio  600Ω 0dBm balanced (to VDR/S-VDR),

unbalanced (to ext. loudspeaker)
RS232C  for external printer NKG-91 and DPU-414
Environmental conditions Power voltage DC 24V +30%

-10%
Current consumption DC 24V input, 8.3A max
Ambient condition temperature: -15°C +55°C (range

for full performance 0°C +40°C)
Optional items  Power supply unit  NBD-865 (for AC

operation) 
Remote VHF controller  NCM-1770(with handset, cradle

and cable) 
VHF channel selector  NCM-2000 
Controller connection box  NQD-2770 
Flush mounting kit  MPBC42957(for NCM-1770) 
Controller bracket  MPBX44354 
Handset  NQW-261 (with cradle) 
Handset connection box  NQE-1847 
Handset connection box (waterproof)  NQE-1845(flush

mount) / NQE-1846(wall mount) 
Printer (table mount)  DPU-414 
Printer (flush mount)  NKG-91 
External speaker (wall mount)  NVS-423 
External speaker (flush mount)  NVS-423A 
Extension board  CQD-7701 (required for multiple

controllers)