Icom 505 Nmea

BruceB · 07 April 2007, 18:50

I can't get my new 505 to talk to my Garmin 182C, I know thw Garmin is outputting the data but the radio doesn't seem to be able to pick it up. Anybody got the coprrect connections or an idea what I am doing wrong?
I have the channels set for 4800 baud NMEA, the GPS is defintely outputting as I get the info on my old 421.

Ribshop · 07 April 2007, 20:05

Sorry if you have done this already but the Icom M505 is slightly different from what the Icom’s usually are.

The there are two wires stuck to each other next to the power cables, split them, the one with the white writing on in it (closest to the power cables is a two core coax type wire, again spilt the two cores, the plain now unsheathed cable is the neg and the inner is the NMEA + in.

Also with the Garmin go into the set up menu, go to the network/ NMEA options and make sure NMEA network is set rather then Garmin.

Hope this helps.

BruceB · 07 April 2007, 20:42

I had already tried this and it didn't work.
I seem to now have it working, I connected the inner two NMEA + cables to one output of the Garmin, one to + and the other to -. I then connected the both sheaths from both bcables coming from the radio together and it started working, or at least I have an input for a position, don't know if the VHF is outputting data back to the Plotter yet.
So VHF red inner to Blue + from Garmin
VHF white inner to Brown - from Garmin
Both VHF sheaths connected together.
Hopefully someone will know if this is the correct way or not?

Ribshop · 07 April 2007, 20:54

In the attached pic the NMEA in should be split in to two, the outer is the - and the inner goes to the NMEA out + on the GPS.

At least you have it working,

Good luck.

Jon Brooks · 08 April 2007, 07:18

Bruce If you go the Icom UK website there is a page on there that gives you full instruction on how to conect to any Garmin

Hope that helps

BruceB · 08 April 2007, 10:00

This is how I have connected them. I have an input for position for the VHF and the input for depth to the plotter but I am not sure yet if I have the DSC input to the plotter.
I couldn't find anything specific to 505 and 182 connection on the Icom site and things are always complicated by Garmins use of common returns for NMEA.
Maybe someone with "the knowledge" will be able to tell before I reassemble the console in front of the VHF connections if I have got it right and will get DSC info from the VHF onto the plotter......