Join Date: Feb 2009
Location: Toronto, ON, Canada
Garmin GXM30 antenna problem.
I've just added XM antenna (GXM30) to my Zumo 550. Bought the antenna on eBay. Installed it under the windscreen (K1200S). It works fine as long as the bike idles or moves with a constant speed. As soon as I start accelerating hard, or just raise RPM to 6 - 7K (standing still) the radio looses the signal completely!
Does anyone experience the same problem? Is it a defective antenna, or some kind of interference with the ignition system, spark plugs, etc.?
GPS and antenna are powered from original BMW navigation connector (located in front of a battery). Spark plugs and wires are all original.
Last edited by ZR1000A1; Jul 4th, 2010 at 9:44 pm.