davethedog
Well-Known Member
multiplexor....what type and from where????? And what extra cost I wonder!
multiplexor....what type and from where????? And what extra cost I wonder!
I'm not sure whether that's correct, and the radio's manual isn't clear. Normally, AIS data is transmitted at 38400baud, and DSC data is transmitted at 4800baud. By default, GPS data output is turned off. However, it's possible to set the radio to transmit both AIS and DSC data at 38400 (this is the functionality SH introduced with the 2150 to solve the problem of interfacing with single-port plotters). So it's quite likely that if GPS output is turned on, it might also be transmitted on the 38400 connection. I think a phone call to Standard Horizon might resolve the question.
multiplexor....what type and from where????? And what extra cost I wonder!
A re-check of the manual suggests you are correct, as per page 18.
I'd still not want to lose the heading sensor though. Can't remember how it all works with the C80, but some plotters won't overlay radar without the heading sensor,if i recall correctly. MARPA definitely won't work.
Thanks for the help and it is all complicated this yachting lark!
Will look at what to do then as ideally want gps to the c80 to feed the chartplotter and also the radar to function. In a few years I will look to upgrade the whole system anyway but whilst the radar is working I am better off getting the chartplotter to work and also use an iPad to aid the navigation.
So, I guess it will be better to retain the smart heading sensor on the nmea input and then get a multiplexer to run the gps input as well. Why can't it just be simple!
Another way might be this http://www.cactusnav.com/comar-nmea-0183-wifi-convertor-p-12678.html It would take the output from your heading sensor and a GPS and multiplex them both, adding in AIS and send the lot to your plotter via a single port. You'd also need the GPS and an antenna, but this would all work with your upgraded system in the future. Total cost, circa £350
You may have pasted the wrong link, but the Comar unit you linked to doesn't receive AIS, and only has one 4800baud input. It also outputs via wifi, which the OP's C80 can't accept. So it wouldn't do what you've said.
Apologies, i had posted the wrong link. I've corrected the original post. Thanks for spotting it.
Another way might be this http://www.comarsystems.com/ais_3r.html It would take the output from your heading sensor and a GPS and multiplex them both, adding in AIS and send the lot to your plotter via a single port. You'd also need the GPS and an antenna, but this would all work with your upgraded system in the future. Total cost, circa £350
I'm afraid the Comar AIS-3R which you've recommended won't do what you say either. It only has one NMEA input at 4800baud, so could take the GPS, or the heading sensor, but not both. Perhaps the OP should take professional advice.