Being a HAM operator, I should love wireless stuff. This is true in most cases, but not always. Some new wireless keyboards (and mouses) work in the 11 meter band. Quite frequently, these devices stop working. Any reasonable signal from a CB operator in the neighborhood is enough to make these (micro Watt) devices worthless.
A wireless door bell, one block away, works in “our” 70 cm band (on 433.920 MHz, to be exact). It’s not surprising that this door bell fails when we are having our daily QSO’s. Guess who gets blaimed for the interference?
Some car keys work on the same frequency. A month ago, I did an experiment. While being parked at a gas station, I set my tranceiver to 433.920 and kept the PTT button down for a while. My signal did the trick: three out of ten car owners had to open their vehicle manually.
When will manufacturers stop using frequencies which are intended for HAM- or CB use?