[Amps] Amps Digest, Vol 67, Issue 16

[John Lyles]

Irridite is a chromate conversion finish for aluminum. It isn't for copper or silver. It does make aluminum surfaces much better at holding their conductivity over time, instead of creating oxide that is higher resistance. I have designed commercial cavity amplifiers for FM broadcast using aluminum, with this coating, and the circuit efficiency was high. Silver was only used on the coupling loop (a copper part) and the screen and grid connections, plus the Eimac socket. 

John
K5PRO

> Message: 2
> Date: Fri, 11 Jul 2008 13:49:27 -0400
> From: <sccook1 at cox.net>
> Subject: Re: [Amps] Silver Strap
> To: Alex <alexeban at gmail.com>, Steve Thompson <g8gsq at eltac.co.uk>,
> 	amps at contesting.com, Harold Mandel <hmandel at barantelecom.com>
> Message-ID: <20080711134927.HKG0B.13027.imail at fed1rmwml20>
> Content-Type: text/plain; charset=utf-8
> 
> I have also seen silver plated surfaces Kim-filmed (Irridite).  Looks kind of golden.
> 
> Just a thought...
> 
> -S