Just an update. I wasn’t able to find out the frequency of the lapel mic. The receiver only displays a channel number. However, I did find out the church had a in ear monitor system that was already installed but wasn’t being used. We got it fired up and I gave my wife the receiver. It worked great. I suggested getting more receivers but the company, Xtuga, has backpack receivers with different frequency ranges. Where the problem lies is the frequency range of the church system, 572-603.5mhz, has been discontinued. I was able to locate two of the receivers on other sites and purchased two. They were about $40 each. I am going to donate one to the church and keep one for my wife. That will give the church two they can offer to let other people with impaired hearing to use
B.S.