I doubt that LNB drift is exclusive to just Dishnetwork. Dish just happens to have software in their receivers that can detect it.tkrandall said:as a DirecTV customer, I never heard of it before (which is not to say the phenomenon does not exist with DirecTV LNBs, just that the receivers don't diagnose it to the customer). I saw it noted on my parents' 622 receiver last night.
any oscillator in any system can be susceptible to drift. not just in LNB's but all equipment that uses one. it was a common happening in analog music synthesizers in the 70's. Made them sound out of tune all the time.