"Richard Harrison" wrote in message
...
Roy, W7EL wrote:
"Some stainless steels are ferromagnetic, with a permability I`d guess
at 100 or more. That reduces the skin depth, and therefore increases the
RF resistance by a factor of 10."

Being ferromagnetic does not disqualify an antenna material.

Whoa... now you are misquoting Roy.

He never did DISQUALIFY the use of stainless steel
He clearly stated in technical terms what stainless steel
lacked in an area that is important with respect to radiation.
I suspect the use of stainless steel for consumer antennas
is an engineering one to prevent rust and antenna mechanical distortion
which outways the loss in efficiency.
It was this difference that Roy was alluding to and is the reason why
amateurs take note of the characteristics of material used and is why
aluminum,copper and the like
is used in the communication world. Many in the amateur community allude to
communication obtained with a wet string but in no way are they
DISQUALIFYING the use of aluminum and the like. Stop throwing mud and get
with the program. You will never,ever make the smallest piece of your mud
stick to the likes of Roy and Tom with mis quotations.
Art
Art



Most CB
whips are stainless steel. They aren`t too lossy because they are only
about 1/4-wave at 27 MHz and must be large enough in diameter to be
durable. In the range of 0.55 MHz to 1.7 MHz, most transmission is from
ordinary non-stainless steel towers. The only coating on many of these
is paint. The cross-section to length ratio is economically small, but I
doubt the loss added by using nonplated steel could be measured.

Best regards, Richard Harrison, KB5WZI