I have installed an Audio Request IMC along with a URC MRF 300, and a MX-850. I have tried using the direct IR port in the rear of the IMC with not luck. I have also tried using a flasher on the front IR window with scattered results. I have contacted Request with this issue and have been told it is a problem with the combo of equipment. I don't know if anyone else has a similar setup and I was wondering if there were any additional ideas.
Thank You----Steve