Started watching an OTA channel this morning, and everything was fine. After about a half hour, I suddenly got the "The offair signal has been lost" screen (Error 739). After waiting a few minutes thinking it may be a glitch with the station, still no signal. I then tried other stations (no joy) and checked the antenna connections and found no problems. I then switched the input on the TV to the antenna input and had a good signal there. The antenna signal is split behind the TV to go to the TV and to the OTA module on the Hopper. I've had the Hopper 2000 and OTA module since January of this year. Has my OTA module gone bad or is there something else I can try before I contact Dish? Thanks for any suggestions.