___Original Message_________________________________________
From: larkim <
matthew...@gmail.com>
Date: Thu, 20 Sep 2012 Time: 05:08:15
>I've bought two wireless doorbells, one a B&Q cheapo and another a
>Byron SX15i cheapo from ebay. Both displayed the same problem - OK to
>set up, work fine, and then start randomly ringing themselves within an
>hour of being set up.
Weather stations, dear boy, weather stations.
We recently bought a wireless doorbell, and it too rang at random
intervals, sometimes with a very strange ring. Eventually I guessed it
might be one or both of our weather stations. I removed the batteries
from both, and the phantom doorbell stopped.
Problem then was, we wanted to keep the weather stations *and* the
doorbell. So I opened the doorbell controller, and discovered a couple
of pots (variable resistors) inside. I reckoned one of these was an
audio volume control, and the other was an RF sensitivity control. By a
process of scientific investigation (aka knob twiddling) I was able to
reduce the RF gain to a very low level, sufficient to receive the door
bell but insufficient to receive the WX stations. Now everything works
well without mutual interference.
Ian