We recently installed a control system for a client. They had a harmony control system before. The layout is as follows: 2 rooms back to back. literally. there is a wall separating the kitchen living room and a standard living room. Both rooms have surround sound systems. Both rooms have identical sources (both use cisco cable, yamaha avr, and so on). each room has its own equipment.

All equipment is located in a cabinet on the kitchen living room side.

We spec'd a MX-1200 for each room. Each room sources have a dedicated MRX-2 base station. each base station has it's own RF250 antenna. The base stations are addressed differently. The issue is the rf250 antenna are not addressable so when ever a command in one room is issued, the other rooms 250 antenna is picking up signal. Therefore when the rooms are both trying to make commands at the same time, the antennas are competing with each other.

URC does not offer an Iseries in this remote or base station. the customer wants this specific remote control because it is what we installed in his sons home.

Is there a way to keep these antennas from picking up signal from the opposite room?

There is an MX1200i and you can order a RFX250i. Not sure who said they don't make it.

This is really the only answer to your issue. Crosstalk is unfortunately common although it should only present itself when someone presses a button at the same time on both remotes.

You said they are both addressed different/ did you put an address in both or just one to make them different. The code the factory sets is a test code and will see any remote signal. So make sure you set both to new codes

The website no longer shows a mx1200i. If I can find one, This is good news. Here is my question, If I connect a rfx250i to the mrx-2 does the base station care how it received signal? in other words, I won't need the base station to be a mr
x-2 I?

No, the basestations have nothing to do with the signal coming in. They are all the same. The antenna is the difference. I did double check with my rep and he confirmed that they are definitely still available.

Addressing doesn't affect crosstalk one way or the other. Essentially, when the remote sends signal to the base, it "opens up" for a fraction of a second in which pretty much any signal can hit it. So while it typically doesn't affect most installs, it can happen. The issue occurs when you press a button on two remotes at the same time. That's when wonky things can happen.

My rep just called me back as well and said they are available. This is good news. Last question. Will I be able to dump the current 1200 file into the 1200i remote without issue?

EXACT same program. You don't have to do anything except change the antenna and download to the i version for one of the rooms.

Perfect. Thank you goldenzrule!

Anytime bro

In this situation, could you have used single MRX10, or did you have too many devices?
Using routable IRs might have given you the desired result.

I do agree that it will be simpler to just get the "i" version for different frequency since the system is already programmed.

MRX10 is part of the Total Control lineup and not compatible with the MX1200. If they have less than 6 devices than a single MRX1/2 could be used. If they need more ports and have to assign ports, than two MRX1/2's with one using a 418 MHz RFX250 and the other using a 433 MHz RFX250 would be the best option. If you are simply doing IR and not using iOS or Android Apps or using a MX5000 or MX6000 then you can also use a MRF350 and MRF350i instead. Being that you already have the MRX1's though, its more cost effective at this point to just get the RFX250i and MX1200i and call it a day.