It depends upon budget and needs. If a minister is going to stand in a small area and just talk to the congregation, he's primarily looking at a good quality, low cost, VHF system. If so, you would want to get into a more sophisticated wireless system. If a Minister is a dramatic personality, where the delivery goes from a whisper to a shout to a song, you will want to pay more attention to the dynamic range of the wireless microphone. A. Let's start with True Diversity a term I developed and coined years ago to differentiate between the different types of diversity.
Diversity is basically a means of multi-reception.
True Diversity is where you have two independent receivers, each with its own antenna, built into one physical receiver unit. The two receivers are tuned to the same frequency, but the antennas are spatially located apart. Depending how the unit is setup, the two receivers silently switch back and forth to prevent drop-outs and assure crystal clear reception. Other cheaper forms of diversity focus around a single receiver and multiple antennas. Q. Tone squelch is a common feature found on wireless systems.