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[nagyg]

I could not get a slimline wall remote to work and thought that I needed a transceiver in the same room to transfer the signal from the remote to the power line ... Installing the transceiver did not make any difference! When I unplugged the CM15A the transceiver did not work at all. Does the TM751 need a CM15A? Is the TM751 not working and the CM15A is receiving the signals? Where is my misunderstanding?

[dave w]

I could not get a slimline wall remote to work and thought that I needed a transceiver in the same room to transfer the signal from the remote to the power line ... Installing the transceiver did not make any difference!

When I unplugged the CM15A the transceiver did not work at all. Does the TM751 need a CM15A? Is the TM751 not working and the CM15A is receiving the signals? Where is my misunderstanding?

From the Slimline switch stand point, both the TM751 and the CM15A provide the same function. They receive the RF commands from the slimline switch, or any of the wireless remotes and put the comands on the homes powerline. Generally you should only need one. The CM15A also functions as a automation controller. Maybe you have a noise problem.

You might start reading here for more understanding: http://jvde.us/x10_troubleshooting.htm

[nagyg]

Thanks for your quick response. My plug-in controllers work fine and so does the PalmPad remote, I guess it is not a noise problem ... I am just very frustrated - the "Best Remote Deal in X10 history" bought me 7 pretty much useless remotes and I waisted more money (and time) on the transceivers! I am trying to return the remotes ...

[Brian H]

The Slim Line Switches are not known for their long communications distances. I know some here have added a passive antenna to theirs to extend the distances.
I don't have links at the moment but the search tab should fine some.
It is possible the switches RF signal did reach the CM15A and it sent the signal back to the power line while the TM751 didn't receive the signals.

[nagyg]

That's what surprised me - I expected the range of the TM751 to be much further than that of the CM15A. I wonder if I should use the antenna of the TM751 for the CM15A mod I have read about on this forum. Is it worth the try and ruin the TM751 and break the factory warranty on the CM15A?

Today I should be getting the ACT CR234. I am not sure it will be the answer to all my woes, but I have high hopes ...

[dave w]

Today I should be getting the ACT CR234. I am not sure it will be the answer to all my woes, but I have high hopes ...

The ACT will not help the RF Remote's range problem, but it will push the X10 powerline signal throughout your home, eliminating phase coupling problems and greatly reducing any problems cause by "noise". problems.

As a test, wrap about five to eight turns of an 18 inch length of flexible wire around the antenna on the CM15A and see if your range improves... I bet it will. This forum contains information for bettering the RF receive range of the CM15A in many ways.  A couple of the mods (like the wire wrap) will not void the warranty since the Cm15A is not opened. 

[Brian H]

The newest TM751 I received in a deal order. Has the same RF receiver board in it as the CM15A, but my tests shows it was at least receiving 1.5 to 2X the distance of a CM15A. My guess better longer antenna. 

One thing to remember. A TM751 is not polite and if there is another controller sending X10 signal on the power line. It will step on it with garbaged signals and all.

[Dan Lawrence]

Which why I suggest the RR501 instead of the TM751, the 501 is polite and will not step on other signals.

[dave w]

Which why I suggest the RR501 instead of the TM751, the 501 is polite and will not step on other signals.

I don't think the RR501 is available anymore. Typical, they cancel the good stuff.

[nagyg]

The newest TM751 I received in a deal order. Has the same RF receiver board in it as the CM15A, but my tests shows it was at least receiving 1.5 to 2X the distance of a CM15A. My guess better longer antenna. 

One thing to remember. A TM751 is not polite and if there is another controller sending X10 signal on the power line. It will step on it with garbaged signals and all.

Does this mean that when both - the CM15A and the TM751 - receive the signal it can cause garbaged signals?

Another question: is it relevant to which house code the TM751 is set for receiving RF signals and converting them to PLC?

[Brian H]

Yes they can collide. That is if the CM15A is slightly ahead of the TM751. The CM15A is polite and if it see the TM751 power line signal. In theory it should wait for a clear time before sending.

The TM751 only does one House Code so if it is not on the House Code the RF device is using. It will not send anything.

The CM15A in the Hardware Configuration Tab of AHP can be set to only send power line signals on enabled house codes. As it can receive all 16 House Codes.

WGL also make a few type All House Code Tranceivers. Many here have them as they are very good distance wise. One also can convert the security codes from X10 security modules to a standard X10 power line signal on a preset address.

[Dan Lawrence]

Which why I suggest the RR501 instead of the TM751, the 501 is polite and will not step on other signals.

I don't think the RR501 is available anymore. Typical, they cancel the good stuff.

Automated Outlet http://www.automatedoutlet.com/home.php has the RR501 in stock.   Check them out.

X10 will sell the RR501 as part of the Wireless Remote Control System (RC5000) at a higher price.

[raster69273]

Which why I suggest the RR501 instead of the TM751, the 501 is polite and will not step on other signals.

I don't think the RR501 is available anymore. Typical, they cancel the good stuff.

still available from x10pro for around $25. Labeled as part # PAT01