[Amps] Re: insulation

[John T. M. Lyles]

Yes it is given that I work with bigger handled tubes mostly. I also 
have to consider a second parameter when selecting insulators for 
some of our RF amps, and thats gamma, beta and sometimes neutron 
irradiation. Teflon isn't so great when exposed to 'rads'.

But if someone were to run across some UDEL polysulfone (looks amber 
to Pepsi-Cola colored translucent) at a junk box, auction, or 
dumpster behind a machine shop, they would have nearly perfect RF 
choke forms. Rexolite is often used for Radomes and insulators in 
commerical BC rigs.