The NMEA 0183 shouldn't be a COAX cable, since NMEA 0183 is a serial connection. Last I checked, you need a
GPS unit, or a
GPS antenna that has an NMEA0183 output. BTW, a
GPS antenna that has an NMEA0183 output is really just a
GPS unit with no display or controls—pretty useless IMHO.
I would recommend you get one of the
handhelds, that could be used in a
life raft in an emergency, like the
Garmin GPSMap 76C. This can run on AA batteries, but can also run off a DC power supply, via the NMEA 0183 cable.
As for the headphone jack, have you tried it with a regular set of headphones to see if it is functioning properly??
__________________
Sailingdog
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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