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Old 24-03-2021, 10:44   #1
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Join Date: Mar 2019
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connecting a VHF-DSC radio to a GPS

My VHF-DSC ICOM M330radio has NMEA in/out leads.
green is Listener B (Data-L), GPS in (-)
yellow is Listener A (Data-H), GPS in (+)
brown is Talker B (Data-L), Data out (-)
white is Talker A (DataH), Data out (+)


1) Do I connect my GPS tx (transmit signal) to the yellow cable (GPS in (+)) and rx (receive signal) to the green cable (GPS in (-))?
2) If my GPS which is said nmea 0183 compatible (GY-GPS6MV2 module) has a baud rate of of 9600 (factory set), will this be well read by my VHF-DSC maritime radio, or will it have to be decreased to 4800 bauds. I know that an arduino module could do that? I want to transmit that data to some android devices with opencpn or navionics apps.
3) What is the name of that type of nmea 0183 cable so that I can purchase one?
https://photos.google.com/direct/AF1...mLeJ7rikWNFxgQ

Thanks a lot.
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Old 24-03-2021, 21:32   #2
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Re: connecting a VHF-DSC radio to a GPS

all marine GPS data is 4800 baud... (except ais which is 38.400)

products at 9600 baud are certainly not nmea 183 compatible with anything else. except many a PC
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Old 24-03-2021, 23:39   #3
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Re: connecting a VHF-DSC radio to a GPS

Your Icom will not accept 9600 baud, it must be 4800. You can change your baud rate on your module by using U-connect free Windows software from Ublox - you will need a USB to serial converter to communicate with your PC (FTDI rather than Prolific).

Your Icom (and most other marine devices) will also not accept TTL logic level input, you will need TTL - RS422 converter.
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