If the temperature is below ~20 deg. F. I get a "no signal" message on the radio. If the truck is warmed up inside and it is not moving for a few minutes I get signal. This is the Ford radio that came in the truck. This only happens when in Sirius (aux.) mode. Otherwise the AM & FM work OK.

Do I have a bad satelite antenna?

 

Better late than never to update what I found. Bad battery. Probably from truck setting on the lot for a long time. New, larger, battery solved the problem.

 

Thanks for the update !