So, I bought a RC65R remote and already had an RF antenna that came with anoter RF remote I had. I plugged the RF antenna into my R15 DTV + reciever, programmed the remote with the remote ID as described in the remote user's guide, and the remote controls the R15 reciever, but it doesn't appear to be using RF (I have to be in direct line of site to control the box). What am I missing? Thanks!!