[Amps] Fasteners in tank circuits

[Jim Thomson]

Date: Fri, 08 Dec 2017 13:22:52 +0000
From: Conrad PA5Y <g0ruz at g0ruz.com>
To: amps at contesting.com
Subject: [Amps] Fasteners in tank circuits

<Some time ago I made a 8877 amplifier for 6m. It was a little low on 
<efficiency, it turned out that you cannot use brake pipe as it contains 
<nickle.

<Ever since then I have used soft copper or silver plated copper and 
<brass in my VHF amplifiers and I have used brass fasteners throughout. 
<In my latest 3CX800 6m amp which goes live this weekend I have 
<fabricated my own tune C from some pieces of aluminium and a few parts 
<stolen from another capacitor. Need I worry about the brass screws used 
<to fasten the copper strap to these aluminium plates? It will be bone 
<dry in the anode compartment so I am hoping that corrosion cannot occur 
<as there will be no electrolyte. I could coat the fasteners in some nice 
<HV varnish that I have to keep any air out if anyone thinks that it is 
<necessary.

<Comments?

<Regards

<Conrad PA5Y

##  Dont worry about it.  Brass works just fine with aluminium.  

Jim   VE7RF