Here's one to ponder:
I had an interesting experience yesterday that maybe someone can shed some light on. We had a grand opening of a venue going on with all brand new gear, all tested and run through quite a few times. During the gala, 'artist 1' performed with a Shure UHF R series UR2 handheld and it worked fine. Between 'artist 1' and 'artist 2' the handheld is taken off stage for a screen to come down for a video. After video screen goes up 'Artist 2' performs but the wireless handheld doesn't work at all. The artist plays the issue like a pro while we bring out the backup wireless and show goes on. Looking at the wireless, we notice the frequency has switched. We resync the handheld and all is well again.
The question is, how does a transmitter suddenly change frequency? Has anybody had something like this happen to them?
We had 4 channels of UHF-R and 4 channels of ULX going on.
-Tony