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Re: [TowerTalk] Mounting Polyphaser IS-RCT to SPGP

To: Dick Green <>
Subject: Re: [TowerTalk] Mounting Polyphaser IS-RCT to SPGP
From: jimlux <>
Date: Fri, 12 Jun 2009 06:25:47 -0700
List-post: <">>
Dick Green wrote:
> Why do you advise against an aluminum ground plate? Are you only against 
> outdoor use or indoor as well? I have a pair of Hoffmann metal utility 
> cabinets with aluminum grounding plates inside. They seem to be fine and 
> haven't corroded a bit.
> 73, Dick WC1M
>> -----Original Message-----
>> From: John Kemker []
>> Sent: Thursday, June 11, 2009 11:47 PM
>> To: Peter Dougherty
>> Cc:
>> Subject: Re: [TowerTalk] Mounting Polyphaser IS-RCT to SPGP
>> The ICE might be a better solution, in any case.  However, to each their
>> own.
>> I'd advise against the aluminum and seriously check out
>> for their copper plates.  VERY reasonable prices
>> for 12"x12" sheets and straps.  I just got two in the mail that I'll be

I was wondering the same.  Aluminum is almost the same conductivity as 
copper and much cheaper and easier to machine.  For the same money, one 
can probably get thicker aluminum (better mechanical properties..)

One advantage of copper is that you can solder to it (although soldering 
to a big sheet is challenging from a heat standpoint), but bolted 
connections to aluminum work pretty well, especially if you use one of 
the goops designed for the purpose.

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