I just had dish installed yesterday. Switched from direct, and now I have the same problem. The # 1 remote has to be straight on to work. All my other componounts work fine and have on the same set up for a few years.
I know that it is the remote, because my IR sensor has a light that is very dim while useing the Dish remote.
I did try the # 2 ir/fm remote, and it does send a stronger signal from an angle, not sure if it can be progragmed to control box 1 or not yet. I am just judging remote 2 on the brightness of my light.
remote 2 (strong) is 21.0 IR/UHF PRO
remote 1 (weak) is 20.0 IR
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come in our house uninvited and......YOU LOSE!!