Garmin GXM30 antenna problem. - K-Bikes.com - Excellence in Motion
 
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post #1 of 3 (permalink) Old Jul 4th, 2010, 8:16 pm Thread Starter
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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.
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Last edited by ZR1000A1; Jul 4th, 2010 at 8:44 pm.
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post #2 of 3 (permalink) Old Jul 5th, 2010, 11:31 am
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Mine has never done that. The only time it cuts out is in canyons when signal from the satellite is lost for a brief moment. I could rev it to redline and not lose the signal standing still.

Yours sounds defective, like maybe a loose connection someplace. There were instances of the plug into the Garmin holder being corroded and people used some cleaner and dielectric grease there to clean it up. The pins on the Zumo cradle were suspect too in the 550 series (clean and apply dielectric and tighten the cradle to GPS with some Velcro disks to secure it better to the pins against vibration). Mine would cut out at speed and I could bring it back by squeezing it in the mount. Velcro on the mount help in that vibration mess.


Mack
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post #3 of 3 (permalink) Old Jul 5th, 2010, 6:55 pm Thread Starter
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I relocated the antenna and cleaned the connector. It works much better now. It still looses the signal @ 9K - 10K RPM, but I can live with it. I usually don't ride at that RPM on the streets, and when I race - I don't listen to the radio .
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