Long shot

Neal · 01 May 2007, 20:07

Long shot but has any one connected a Garmin 178 to a M-Tech mt-500 DSC radio.Having problems with the radio picking up the position. IF not does anyone have a contact for M-TECH in the UK can only find a Japan one.

codprawn · 01 May 2007, 20:21

Afraid not but try swopping the 2 gps wires around - Navman have marked them wrong in some destruction leaflets - could be the same problem with yours? Also check the nmea outputs of your Garmin - they have a few different versions.

BruceB · 01 May 2007, 23:12

Do you have a diagram of what is coming out of each item? I know I had some issues with my Garmin and Icom that the book didn't help with.
Looking at the web on your radio you must have two NMEA pairs for input and output, does the 178 have two outputs/inputs?
Try this, obviously ignore the sounder part off the second channel and make sure your GPS output is set for NMEA @ 4800baud (I think) This certainly worked on my similiar setup with a Garmin plotter.

Neal · 02 May 2007, 06:49

Thanks gents run out of light last night will try again to night. Bruce I have the plotter drawing and went with that but no joy. Will try and track down the VHF people today

Jon Brooks · 04 May 2007, 06:50

Out of the factory all Garmin outputs are set to "Garmin" data and not "NMEA".
If you have not already you will need to change this in the menu or the radio will not display Lat and Long.

Hope that helps

Neal · 04 May 2007, 08:13

Thanks for the the posts and PMs have also spoken to Garmin now and all looks to be working as of last night. The drawing was not very clear

but there tech support was better.