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[G64]

Hi everyone,

I have started my Home Automation project. I have most of my devices setup. I bought a 3-pack of SS13A Stick On Wall switches in the USA. I was under the assumption that all SS13 switches were the same but that was a foolish assumption . The SS13A`s work on a 310 Mhz RF frequency and the SS13E work on 433 Mhz (for Europe).

Has anyone seen a mod somewere that allows me to modify the frequency? I have searched a lot already but haven`t found anything . Hopefully someone here has some thoughts or knows if it is possible (or not) at all.

Thanks to everyone in advance.

G64

[Dan Lawrence]

Unfortunately, you are out of luck.   Only thing you can do is send it back, explain why and ask for your money back.

[G64]

Hmm, thats too bad. How is the Frequency set in a SS13? Is it set in the microcontroller? I also noted that there is a potmeter on the ss13. I tried adjusting it but didn`t make a difference.

G64

[Brian H]

I doubt it is the microcontroller. Most of the X10 RF stuff is a simple LC oscillator. Gated on and off by the microcontroller. Some are tuned by bending the coil and you will see it held tuned by some wax or potting material. Some the tuned coil and the antenna are the same. I have seen some of the newer OEM ones like used in the Radio Shack 49-1000 Security Remotes and the Black and Decker remotes have a Saw Resonator frequency standard. Those also used surface mounted components and a etched antenna on the PC Board.
I actually found some of the devices schematics on the FCC web site as not all manufacturers restrict the material filed with the FCC.