xm weather update problem

[floydpackard]

I am having trouble getting my xm weather to update regularly. I noticed my last flight from Washington to California while I was over Nevada I could not get any updates for almost 2 hours. I have noticed when I fly from Washington to Salt Lake that I also have trouble getting updates when I am away from populated areas. As soon as I am over more populated areas I get signal. I also noticed that while I was flying over Nevada there were a lot of hot MOA's and they were conducting war games. Both of my gps units (garmin and TT) were blocked by the military for almost 30 min of flight. Perhaps I am having trouble due to military blockage. I noticed when I flew up the central valley of California on the way home I had updates every 2-4 minutes. As soon as I got over the central area of Oregon I once again had no service for over an hour. I have WxWorks tied to a GRT HX. The antennas are on the glare shield and are separated. I have the xm antenna mounted on the glare shield with two sided tape. I have moved the antenna during flight and still no updates. Any help would be appreciated.
Thanks
Floyd

[Ironflight]

You might very well be getting a combination of things - some RFI from the "war games" that you mentioned is possible. And other might be the direction that you are flying - headed north at higher latitudes, with the XM on the glareshield, it might not see the satellites as well (they are equatorial). I have noticed a slight tendency towards losing an update or two when pointed northbound versus pointing southbound. YMMV...

Paul

[floydpackard]

After working with the GRT folks and working with the WX works people we decided to try a new antenna and it solved the problem. It was not a placement issue with the other antennas on the glare shield. If others have this problem this might help.
Floyd