Oops ... helps if the receiver is set for IR instead of RF .. Corrected it and now it seems to work properly. All I need to do now is map the keys the way I want them.

(operator error :-)
I have 2 HDDVR's and discovered that they are different models. The first on is the HR23-700 and using the codes for the HR20 work just fine. However, the second model is a HR22-100 and the codes for the HR20 do not work at all and this is the one I need to control as opposed to the HR23.