Transmitter (For Ais) *Gx6500 Only; Receiver (For Voice And Dsc); Receiver (For Ais); Gps Receiver - Standard Horizon QUANTUM GX6500E Owner's Manual

24.3

TRANSMITTER (for AIS) *GX6500 Only

Frequency...................................... 161.975 MHz (CH A), 162.025 MHz (CH B)
RF Output Power....................................................................................... 2 W
Conducted Spurious Emissions.............Less than −80 dBc (Hi), −66 dBc (Lo)
Audio Distortion.......................................................................... Less than 5 %
Modulation..................................... ..................................... 16K0GXW (GMSK)
Frequency Stability............................................ ±0.0003 % (−20 °C to +60 °C)
24.4

RECEIVER (for Voice and DSC)

Frequency Range ............................................. 156.050 MHz to 162.000 MHz
Sensitivity
20 dB Quieting ................................................................................ 0.35 µV
12 dB SINAD .................................................................................. 0.30 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 .................. 80 dB for Voice (75 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 % (-20 °C to +60 °C)
Channel Spacing ...................................................................................25 kHz
DSC Format ............................................................................ ITU-R M.493-13
Antenuator (Local) ..................................................................... Approx. 10 dB
24.5

RECEIVER (for AIS)

Frequency.................................... 161.975 MHz (CH A), 162.025 MHz (CH B)
Sensitivity ..................................................................0.5 µV (at 12 dB SINAD)

Selectivity(Typical)

Spurious and Image Rejection ...........................................................70 dB
Intermodulation and Rejection ............................................................70 dB
24.6

GPS RECEIVER

Receiver Channels .......................................................................66 Channels
Sensitivity ........................................................................ Less than -147 dBm
Time to First Fix ................................................1 minute typical (@Cold Start)
Geodetic Datum................................................................................... WGS84
GX6500E/GX6000E
de-enphasis characteristic at 300 to 3000 Hz
5 seconds typical (@ Hot Start)
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