Receiver; Gps Unit; Nmea Input Output - Standard Horizon Explorer GPS GX1700 Owner's Manual

20.3 RECEIVER

Frequency Range ............................................. 156.050 MHz to 163.275 MHz
Sensitivity
20 dB Quieting ................................................................................ 0.35 µV
12 dB SINAD .................................................................................. 0.25 µV
Squelch Sensitivity (Threshold) ...................................................... 0.13 µV
Modulation Acceptance Bandwidth.....................................................±7.5 kHz
Selectivity (Typical)
Spurious and Image Rejection ................. 80 dB for Voice (75 dB for DSC)
Intermodulation and Rejection .................. 70 dB for Voice (70 dB for DSC)
Audio Output..................................4.5 W (at 4 ohms external speaker output)
Audio Response ........................................... within +1/–3dB of a 6 dB/Octave
Frequency Stability ..............±0.0003 % (–4 °F to +140 °F [–20 °C to +60 °C])
Channel Spacing ...................................................................................25 kHz
DSC Format ............................................................................ ITU-R M.493-13

20.4 GPS UNIT

Receiver Channels .......................................................................12 Channels
Sensitivity ........................................................................ Less than –130 dBm
Time to First Fix ................................................1 minute typical (@Cold Start)
Geodetic Datum................................................................................... WGS84
20.5 NMEA INPUT/OUTPUT
NMEA 0183 GPS Input (4800 baud) ........ GSA, GSV, GGA, GLL, GNS, RMC
NMEA 0183 DSC Output (4800 baud)....................................... DSC and DSE
GX1700
de-emphasis characteristic at 300 to 3000 Hz
40 seconds typical (@ Warm Start)
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