tony sayer wrote:

Well FWIW we used to run a mobile disco back in the 70's using a couple
of Tannoy York enclosures with 15" monitor gold's therein driven by
Quad 50E's and we were using a home brewed radio mic, sorta belt pack
thing then on 175 MHz, and never had any problems with it!!..

Back in the seventies, the general RF level was a lot lower. Remember
back when you could actually turn on an AM radio and get decent reception?

At least in the US, the proliferation of cheap consumer electronics has
really resulted in incredible amounts of hash on the VHF bands and below.

Hell, I remember when those 40 MHz VHF-LO radio mikes worked great! I
could not imagine using one of those in the RF horror of any metropolitan
area today.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."