My church uses 2 wireless microphone systems. One is an Audio-Technica lavalier the other is a 4-channel system (sorry, I don't remember the brand)
About 6 months ago (after several years of flawless use) both systems started dropping the signal. There are some pops, then the signal from the transmitter completely drops out. On the Audio-Technica receiver, the RF meter goes to zero. The other system is more basic; it has no meters. The Audio-Technica also has 200 frequencies; I have tried 10 in various ranges of the available frequencies.
Since the same thing happens on both systems, and they are on different frequency ranges, I am assuming the issue is environmental. I am also assuming that there is not RF interference causing the problem, since the RF meter drops to zero rather than spiking.
Are my assumptions sound?
Where should I begin in tracking the problem?