I always forget how to do this and I need to do this from time to time, and end up searching the internet for the instructions again.
Taken from
here, here is a great way of getting all of your TV2 remotes on the same IR/UHF channel, which is important for non-Dish devices trying to talk to Dish hardware:
1. Push System Info button on the Dish PVR.
2. Using the remote you want to adjust, press and release SAT once.
3. Press RECORD 3 times.
4. Press and hold SAT until all lights light up.
5. Release SAT and SAT should be blinking.
6. Using the number pad on the remote, enter the desired number (between 1 and 15)
7. Press # once.
8. Press RECORD once.
9. Exit System Info.
Up to this point, you've just programmed the receiver to listen for signals from a specific remote on a specific channel. To complete the process, you now need to program the remote to send its signals on the correct channel. To do so:
10. Repeat steps 4-7.
11. Test the remote's functions on the TV to which it is associated.
