"Jimmie" Gfender@carolina dot.rr.dot com wrote in message
. com...
I want to make a 2m Yagi out of stainless steel, partly because of the
corrosion resistance but mostly because I have the materials on hand. Some
of my friends have tried to tell me that the higher ohmic resistance of SS
will make for a poor antenna. Frankly I do see that it would make any

Look at all the mobile antennas. For the most part they are SS. Mainly
because of the stiffness of the material. The antennas for the low bands
are usually not SS. Part of it is that the short for wavelength antennas
can not stand much resistance where it becomes a large part of the overall
"radiation resistance".
When the antenna is aproaching a 1/4 wave or more the resistance of the
material it is made of is less important.

The loss in a stainless steel whip antenna in comparison with the TOTAL
loss, including that in the ground, is always small enough to be neglected,
regardless of length of the antenna.

Ralph Mowery wrote:
The antennas for the low bands are usually not SS.

In one of the CA 75m mobile shootouts, Wally, WA6JPR, entered
a bugcatcher with an SS Fortex Coil. It was 4 dB down from
his copper loading coil (no hat) and 6.5 dB down from the top
rated screwdriver (with hat). Of course, most stingers on HF
mobile antennas are SS and are located at the high voltage -
low current end of the mobile antenna.
--
73, Cecil http://www.qsl.net/w5dxp



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