Posted for Earl Schroeder <earleschroeder@yahoo.com>:

 Hi Ron,
 Signal strength probably is a problem is some cases and could have been the
reason for such on my recent trip to Oshkosh.  But I have seen problems
sitting here on my couch with full signal and the antenna not moving with a
clear view of the Southern sky.  Twice have I seen the radar display disappear
for one five minute cycle..once on the Oshkosh flight and once on the couch.
 In flight, it was of greater concern. ;-) Earl