This is not new. I have had interruptions with sirius for years. Now I bought a new Alpine radio with sirius included and am standing in blue sky arizona with my motorhome and this thing interrupts somtimes for 20 seconds or more and comes back. This happens every few minutes! The same happened with my prior receiver. The antenna is on top of the motorhome in clear view of the satellite. All searches on google ask the same questions , have the same problem - but no answers. I will probably quit Sirius if there is no tech with a solution. Their answers are nonsense (antenna defect etc,) I am on my third antenna with the old receiver and this is the new one. I assume that the sirius system in general is flawed - or they would have the answers.
If anyone has any bright ideas, I would like to know.