The Hull Truth - Boating and Fishing Forum - View Single Post - Garmin GPSmap 540s and GXM 31 smart antenna
Old 02-19-2012, 01:27 PM
  #5  
Hail Storm
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Originally Posted by Phlorida View Post
Garmin Marine customer support totally rocks. Send them an email now and it will probably be in your inbox when you get up in the morning.
The GXM 31 is a seperate antenna. I added it to my 545S and it also has XM radio outputs as well. Works great.