Dan wrote:
Had the same issue.

Traced it to a bad antenna. Garmin FedEx'ed me a new one. The problem
is demonstrated when in line of sight to cell phone towers on certain
frequencies. Test it out around town, and you'll see what I mean.

Dan,

I've noticed that when my unit goes deaf, switching antennas from the
external "hockey puck" unit to the stubby vertical has no effect so we
may be talking about the same symptoms but a different cause.

Just curious -- did they replace your puck antenna with a new model or
just replace the one you had? Also, just so we can nail this down, what
model antenna do you have now?

-Doug

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Doug Vetter, ATP/CFI

http://www.dvatp.com
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