I am installing 3 MX850/MRF300 combinations into 1 house and am having a problem I have never seen before. With all 3 MRF's set to different house codes there are remotes talking to the wrong address.

Specifically there is a rack of equipment centrally located with 3 identical cable boxes amongst other equipment. Each MX850/MRF300 controls 1 cable box and typical common components. When 1 remote is accessing the cable box it sometimes will change on 2 of them. Each cable box has the IR window completely covered, the adresses have been verified over and over again, IR routing is being used with each box using a seperate and different line out, and no flasher wires have been cut or spliced so there can be no chance it is being sent down the wrong lead. I have the very latest update and have tried rebooting my computer and pulling batteries from the remotes.

I have spent hours and hours trying to make sure there are no mistakes and can't come up with anything. I have never used 3 of this combination in 1 house...have I made a big mistake? I am sure I will be taken to task for not selling the RTI's instead but I am in this so deep I would like to save face.

Thank you in advance for any ideas.

I still would suspect IR beleeding over from one emiiter to the IR window of another Cable box. As an experiment, try covering the entire cable box with an opaque had towel or something of the sort - and I mean the entire cable box - to make sure stray IR isn't getting in somehow. I wouldn't leave it covered too long, as they can get very hot. If it still leaks then I'm not sure what else to try - but somehow stary IR is leaking.

I agreed with FP Crazy. You probably have some IR bleeding inside the rack.

Are the front IR blasters turned off on the MRF300 base stations?

I also will bet that it is IR leakage, especially if the LEDs that indicate signal reception are only blinking on one MRF-300 at a time.

Being a control freak, I hate that you can't see IR, so you don't know what it is really doing. But video cameras can see IR. I have seen it appear on a monitor as white.

Get a video camera, turn off the lights, and see if the camera picks up anything. A low-light CCTV camera that can use IR LEDs for illumination would be ideal. That might help you determine where it is leaking from.

Or you can use that little card available from MCM (or others like them) that has the visible IR test area on it... I lost my last one and have been forgetting to order another one.

Make sure one of the adresses is not 0. Thats the sniffer mode and it will respond to all code sets. check thatthe emmitters are not flashing when the shouldn't be. That will tell you if it is a routing problem.

You can use a phone cam or a digital cam to see IR as well.