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post #2 of Old 07-15-2009
sailingdog
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You can't connect a USB based GPS to an NMEA 0183 device like a Ray55 VHF. NMEA 0183 is based on either a RS-422 or RS-232 serial protocol, with a data rate of 4800 baud, 8 bits, 1 stop bit and No parity. USB is a high speed serial protocol and is not compatible with either RS-422 or RS-232.

However, the GPSMap 76Cx has an NMEA 0183 four-pin serial/power port on the back and can be connected to the radio for DSC position data to the VHF. However, I don't believe it supports NMEA 0183 input to display the position of INCOMING DSC CALLS.

Sailingdog

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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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