Receiver (For Voice And Dsc); Gps; Nmea Output - Standard Horizon HX870 Owner's Manual

21.3 RECEIVER (for Voice and DSC)

Circuit Type ............................................Double-Conversion Superheterodyne
Intermediate Frequencies .........................................for Voice 1st: 38.85 MHz
Sensitivity ..................................................for Voice 0.25 μV for 12 dB SINAD
Adjacent Channel Selectivity ....................................................... 70 dB typical
Intermodulation ............................................................................ 70 dB typical
Hum & Noise Ratio ..................................................................................40 dB
Selectivity .................................................... 12 kHz / 25 kHz (−6 dB / −60 dB)
AF Output (Internal SP) .................... 700 mW @16 Ω for 10 % THD (@7.4 V)

21.4 GPS

Receiver Channels .......................................................................66 Channels
Sensitivity ........................................................................Less than −147 dBm
Time to First Fix .....................................................1 min typical (@Cold Start)
Geodetic Datum................................................................................... WGS84

21.5 NMEA OUTPUT

NMEA 0183 Output Sentence (9600 baud) ................. DSC, DSE, GGA, GLL,
HX870
for DSC 1st: 30.4 MHz
for DSC 0.5 μV for 12 dB SINAD
5 sec typical (@Hot Start)
RMC, GSA & GSV
2nd: 450 kHz
2nd: 450 kHz
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