Make sure you have IR routing on the Base Station. OF you don't do any routing this can cause the DTV receiver to not only get the command from the Emitter on the DVR, but also receive the signal from another emitter. Also turn off the IR Blaster on the MRF. The DTV receivers are very sensitive when it comes to IR. I just did and HR23 the other day, and my macros had .5 second delay between steps. On any directv receiver I always put the repeats at 1, instead of the 3 default. You also might have to turn down the IR on the mrf base station.