I have just purchased a Icom M421 dsc/vhf radio and would like to connect it to my Garmin 152 gps, I thought it would be just a case of connecting the out (brown I think) of the gps to the in on the vhf but, the vhf has a inner and outer core wire a bit like a mini coax version so I am not sure how to do it. If anyone has done this or can help please let me know. Many Thanks.
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