Burt - I've been expecting you to chime in on the solvents discussion regarding ScotchKote.
Chuck WB2EDV ----- Original Message ----- From: "Burt Lang" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, January 18, 2008 12:00 PM Subject: Re: [Repeater-Builder] Re: question about motorola t1500 series cans > Delrin (polyacetal) is a bad choice for RF applications. Its > dissipation factor is too high. It is a great "engineering plastic" > meaning it is strong physically but it is too lossy. Teflon (tm) is the > best, also rexolite for RF. Also most any ceramics. Corning has a line > of "machinable" ceramic if you can find it that works great for RF. > > A good test for RF suitable plastics is to put them in a microwave oven > and run it for 10-30 seconds. If the plastic gets hot or even warm, it > is unsuitable or a poor choice for RF. > > Burt VE2BMQ >
