Common complaint with our trucks and Sat radio. Really annoying as it's all I've listened to for the past 10 years or so. Both a Buick and a Lincoln and never had any issues in the same areas I'm having with the Ram.
Options are if you have the puck antenna (non uConnect) swap to the Shark Fin - some reported better receptions, but others report no change, so its a roll of the dice really. I have a buddy with the Shark Fin and he says he never drops, but he listens to FM 95% of the time.
You could possibly try an aftermarket antenna with a Fakra adapter, but you'll need some sort of resistor setup I think as if the 8.4 doesn't see the oem antenna it shuts off sat... I think that was the deal. Search back there's some posts on it.
I may try the Shark Fin - it's cheap enough so not a major expense, but I think it's kind of a pain to swap them out.