CM15 RF receiver daughter board

Just wondering why you would want to use the CM15A RF receiver?

I've had four, and the range is less than half that of a TM751. With the stick-on wall switches the range is sometimes down to two feet!

Bob

310 Mhz daughter board are very difficult to find.

They are not in the 'range' of standard frequency which are 315, 433, 868, ..... Mhz

For all DIY electronic scheme, you need to purchas 315 and try to tune to the correct frequency.

This method is not very reliable. For an unknow reason, when you optimize the tuning for one kind og X10 device (Motion Sensor for example), other are no more reconized (key chain remote or slim switch).

It's true that turning the inductive trigger with big fingers could not provide 'up to end' results.

I haven't found the tuning to be that difficult - the superregenerative receivers are rather broadband. Are you using the RSSI output as described in the tuning instructions at...

The company that manufactures these for Laipac also has a 310MHz model but the >310 Mhz daughter board are very difficult to find.

The HiMARK RX3110A receiver used in the CM15A is a superheterodyne model. Its bandwidth (not given in the spec sheet) will be narrower than that of the superregenerative Laipac receivers.

You should get better results us>310 Mhz daughter board are very difficult to find.