Old 02-16-2012, 06:48 PM
Senior Member
Join Date: Jan 2010
Location: North Carolina
Posts: 394
Default Garmin GPSmap 540s and GXM 31 smart antenna

I'm thinking of purchasing the GXM 31 smart antenna so i can receive weather updates on the chartplotter via XM satellite service. Do I replace my current antenna or just add the GXM 31?

also...by installing the GXM 31, will the 540s automatically recognize it? Will it finally give me an option to choose the weather screen?
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