I have a client with 2 MX900/mrf350 systems all sources are controlled via IR emitters. (A/V audio receiver, DVD player all in racks approx 40 feet from displays)

1 system has a Directv HR44 ( M bed room) the other a H21 (great room)when the system with the H21 is in use via the MX900 it controls the HR44 & the H21.

The system with the HR44 works fine at anytime and the remote can control the HR44 after the user in the GR operates the H21 & HR44.

DTV tech support has been no help so far, the IR/RF remote setup in the HR44 menu is grayed out and from what I've read it works via IR & RF.
Both DTV receiver's only have 1 IR blaster.

Please any help with ideas would be great, I did not install the system only trying to trouble shoot the problem.

My thinking is somehow the RF frequencies are the same on the HR44 and universal remote system ( is that possible?) the HR44 needs to operate only in IR!!

Thank you in advance everyone.

Joe

Using IR emitters on each DTV receiver?

Using "hoods" on them?


Make sure you're not using an IR "Blaster" that can spray both receivers.

Even if the MRF is in the back of the rack, if it's set to IR blast, there can and will be some spray where you don't want it.

IR emitters on each receiver? yes

Hoods? No, Gorilla tape covering emitters

I'll check the MRF, didn't think of that, not a programmer and didn't know it sprayed.

Any thoughts that it possibly could be the HR44 and RF issue, there are actually 3 different systems with 3 different MX remotes no other issues, large closet and 2 racks of equipment that has been operating for 10 years not sure when this HR44 was introduced or when the clients realized the issue.

Thx for the reply and help Slammer!

ensure that the IR blaster of the base station is indeed turned off in the URC programming software and report back to us.

Will do Cray thx! That may take some time. In the mean time could I not cover the blast window to confirm it is not a MRF issue?

The 44 and 21 receivers are connected to the same base station? If there are 2 bases, what are the addresses set to?

Unplug the emitters going to the DTV receivers and see what happens. This will tell you if the blaster is hitting them.

I'll try that too, thx HD!

If the emitters are completely covered, and assuming the ir windows on the equipment are as well, than the blaster would not make sense.

Are the emitters assigned and the mrf bases set to different RFIDs? Neither being set to 0?

Route the IR

Doesn't sound like you trouble shoot the basics for something like this yet.
To recap what everyone has said:

You need to see what RFID the URC MRF-350s are set to. They can NOT be set to 0 (that would be the problem right there). Ideally they need to be set at least 2 spaces apart (i.e. RFID 3 & 5).

You need to make sure IR routing is being used. Make sure the ports being used by the device are NOT programmed to ALL.

For good measure (because you said they were old and the MRF-350 had an issue with this long ago) - make sure the port isn't the same for each base & DirecTV receiver. Meaning:
MRF-350 #1 = HR44 on port 1 (and codes routed for DTV only go to port 1)
MRF-350 #2 = H21 on port 2 (and codes routed for DTV only go to port 2)

Check and make sure ALL 3 of those things above are done and I guarantee your problem will be fixed.
Note: Unless the MX-900 is defective and even thou you program as above, it refuses to properly route the signals. Highly doubt this but it is a slim possibility.