I recently noticed that one of my two block 21 rx's has lost range compared to the other. I tested them simultaneously - both on the same freq with a single um200c tx then with tx off. One rx is picking up more RF than the other (with tx off) as well as more hits at a closer range with the tx on.
Any ideas? Other tests?
Also the proximity to my Nomad seems to affect the range of my block 21 systems.
David