There are good and bad points in practice.

UHF is in our experience better than VHF. Any radio headset will connect to the desk via its receiver - this is little difference from using a different mic. Talk to the sound man.

To connect the guitar as well you need to have a mixer to combine the vocal and guitar signals into one radio signal. The sound man can then only control voice and guitar together,so if he turns the guitar down he also turns your vocal down.

Headsets are good if you need to move about or haven't learned the discipline of using a stand mic. You can't turn away to make a remark, or sneeze however. Using the mic characteristics to vary tone (ie close in gives 'mellow' sound far out gives 'bright' sound) is hardly possible. We use four radio mics - one headset for the caller (to allow her to leave the stage) one for the concertina player who moves about a lot, one for me because I play around with the on-stage mix, and one as a 'guest' mic for bridegrooms etc.

We did once perform unwittingly at evensong in the church nest to the gig (that was in VHF days.


Stu