[Amps] amp hardware

Steve Thompson g8gsq at eltac.co.uk
Tue Apr 10 09:40:44 EDT 2007


Peter Chadwick wrote:
> Steve asked:
>> If I'm building up an amp (the RF compartment particularly) with aluminum sheet and angle stock, should I be using aluminum bolts/nuts/washers to avoid galvanic corrosion?<
> Is it going to be in the shack, or outside in a damp shed?
> If in an indoor shack, I wouldn't bother.
> Even in a damp shed, I've had no problems with aluminium and BZP...

I'd echo that - no problems with amplifiers stored in a seaside caravan 
for many years. One option to consider is getting the aluminium parts 
chromate passivated (Aludyne or Irridite in the US?). Costs vary wildly 
but you might find a plating shop that will do a batch for cash. Make 
sure there's no confusion with anodizing - which you don't want.

Steve


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