[amsat-bb] Re: @m / &0cms Antennas
domenico.i8cvs at tin.it
Mon Apr 14 13:22:31 PDT 2014
Hi Simon , G4ELI
Stainless steel is a very bad material to be used to made antennas or
to be used as an electrical conductor because his specific resistivity
is very very high ( 1,61 x 10^-7 )
Since at Radio Frequency the RF current flows only over a thin
surface of the metallic material than the stainless steel could be
used provided it is electrolitically silver plated because the specific
resistivity of silver is the lowest possible ( 1,59 x 10^-9 ) but this
procedure is very costly and the silver over the stainless steel do
not last very much !
Use only aluminum for your antennas as shows the very low specific
resistivity of aluminum as listed on the following address:
----- Original Message -----
From: "Simon Brown" <simon at sdr-radio.com>
To: "'Amsat - BBs'" <amsat-bb at amsat.org>
Sent: Monday, April 14, 2014 2:19 PM
Subject: [amsat-bb] @m / &0cms Antennas
> Are there any crossed Yagi antennas for 2m and 70cms made from stainless
> steel which are available in the UK?
> My WIMO antennas are ~8 years old and as I'm moving house I'm thinking
> about something better.
> Looking for ~3m boom length.
> Simon Brown G4ELI
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