Just out of interest. I've had my magnetic on/off transmitters turn on a couple of times. I thought I had a bad transmitter. I found out that the magnet in the speaker on my telemetry receiver is strong enough to turn the transmitter on. I was throwing my receiver and the transmitter holders on the back seat of my truck, and if they ended up one on top of the other the transmitter would sometimes turn on.

The other time I found that I had placed my magnetic mount onmi antenna on the back seat without thinking about my transmitters. I can tell you that will definately turn your transmitters on.

Paul