VHF/DSC

[Micky]

Fitted my radio up today, linked in with GPS unit, but how do i test it? I know the radio is ok, but what about testing the GPS.

 

[sealine]

Hi
You will get a message show up on the radio if it is not getting a signal from the GPS.

 

[ShipsWoofy]

If it doesn't work, the radio will start beep beep beep BEEP BEEP BEEP BEEEP BEEEP BEEEEEEP to subtly inform you it is not receiving GPS information!

 

[iangrant]

Depends on the radio but mine displays the lat and long. As shipswoofysays. if it cant see the nmea sentences from the gps it will let you know.

Ian

 

[timgriffin]

Did you go through your gps menu to NMEA in/ out to get the gps to talk to the radio , (48 Baud) if you did then they should be talking to each other , and as others have said your lat and long will be displayed on the radio.
Regards Tim
www.griffmarineservices.co.uk

 

[Micky]

Ah, i guess i need to set it up, not just plug it in.
Will have a crack at it today, trouble is i don't have an operators manuel for the GPS, so it's fiddle with the menu.

Thanks for the feedback, will let you know how i get on.

 

[timgriffin]

Whats the make of your GPS Iam sure that between the forum members we could sort you out a copy of the relevant page for you to set it up.
regards Tim
www.griffmarineservices.co.uk

 

[PAULSTEWART]

Does anybody know how many devices can be connected to my one nmea 0183 output from my gps, and what is the best method for connecting them? I need at least 2 at the moment, one for downstairs plotter and one for pilot.

 

[MedDreamer]

In this months MBY there is a NMEA junction box enabling you to connect several devices

Martyn

 

[Micky]

Hi Tim. I would much appreciate any copies of documents regarding a Garmin 48 GPS, coupled to a Cobra VHF/DSC radio.

Tried setting it up again today but failed.

 

[duncan]

on the Garmin 48 you need to go to the interface page via the menu.
first line is the I/O format - highlight it via rocker, press Enter then rocker to none/NMEA
next line set to NMEA 0183 2.0
neat line go for 4800

The Brown wire is NMEA +ve and you should connect the black ground wire to the NMEA -ve or ground of the radio

I have guessed that the Cobra will be happy with v2.0 and 4800 baud, if it's manual says otherwise you change them in the area above

I will however bet a beer that the above will work........

 

[Micky]

Thanks Duncan.
I guess this is where i have gone wrong and get NO response, as i have connected the RED to RED and the BLACK to BLACK.

i Will change it over today, BROWN to BLACK and try again. Many thanks....will let you know what happens.

 

[duncan]

Micky - that's Garmin brown to whatever is the NMEA +ve, or NMEA input on the Cobra radio - I can't find any online support for the Cobra so I can't tell you what colour that will be!
The black from the Garmin is it's unit ground, which you will have connected to -ve battery etc to power the unit. This usually, but not apparantly always, needs to make a direct connection to the NMEA -ve wire of the Cobra radio if it has one.
OK?

 

[Micky]

Tried to set up the GPS to Radio again today, but still no luck.
I think the units are handshaking OK, because, when i switch the radio off, a message comes up on the GPS as RT?? has failed, i forget what the exact initials were.