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Pocket GPS World :: View topic - Connecting a "mouse" type GPS receiver to a marine
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Connecting a "mouse" type GPS receiver to a marine

 
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Avocet
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Joined: Apr 24, 2004
Posts: 2

PostPosted: Sun Apr 25, 2004 12:07 am    Post subject: Connecting a "mouse" type GPS receiver to a marine Reply with quote

Hi All,

I've posted this on the marine board too - didn't know which one was best for this enquiry!

I've just bought a marine DSC radio which can send my position to anyone within range at the press of a distress button (as long as it's connected to a GPS)! The unit comes with a lead to connect to a GPS and although it has 8 pins, only two appear to be needed. The manual says that one is connected to NMEA "+" and the other to NMEA "-".

My question is as follows:

I was thinking of buying a "mouse" type receiver (a Haicom or a Rikaline) to put permanently on the outside of the boat to connect to the radio for this purpose. Most people just use their fixed GPS for this but I don't have one. I have a hand-held but it will be a pain to connect it each time. I've looked in a few online shops and the "mouse" type receivers seem to come with leads to connect to laptops or PDAs but I could do with a lead to connect to the radio. The radio socket looks like an ordinary "PC" mouse connector except it has 8 pins. The outside is identical to that of a computer mouse. The radio comes with a matching socket with bare wires lead out so as long as the GPS I buy comes with a wiring diagram I can just cut a cable and find the right wires.

Does anyone know whether this will work?

Thanks,

Avocet.
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lbendlin
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Joined: 02/11/2002 22:41:59
Posts: 11878
Location: Massachusetts, USA

PostPosted: Sun Apr 25, 2004 12:58 am    Post subject: Reply with quote

you need at least four wires for serial GPS receivers - Vcc, GND, RXD and TXD. That's for RS232. Now your statement NMEA+ and NMEA- would indicate that the radio doesn't use RS232 but uses some other exotic protocol like RS485. Can you find out?

On another note - the handheld is not required for your setup. The GPS receiver is supposed to connect directly to the radio
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