Reg Edwards wrote:
"Ron" wrote hello all,

is there anybody who can give me detailt information about the
dimensions of a isotron-antenna for the 160m-band? any links or
homebrew-descriptions?

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Ron, my guess is that none of the replies to your question are from people
who have ever used or have even seen the antenna.

Not used, but I have seen them. Arguably the most attractive antenna out
there. i hop

With plenty of idle time to spare they are just repeating old wives' rumours
for a little mischievous amusement.

I've read a fairly in depth report on one of the EH antennas. They said
it worked. And the feedline radiation seemed to be what made it work. I
haven't used a backpacker, but their work looked good enough to give it
some credibility.

What do you think about the information that they publish

http://www.rayfield.net/isotron/isohow.htm

Claiming the transmit performance is the same as a half wave dipole, and
the noise on receive is 3 db down from a half wave dipole? This would
seem to indicate that the Isotron is a *superior* antenna as compared to
a dipole. They don't mention anything about radiating feedline. So okay,
maybe the feedline doesn't radiate.

Its *hard* to imagine why anyone would use anything else!


From its construction I estimate its performance to be marginally worse
than a magloop of the same physical size and operating frequency. And
magloops don't do too badly, do they?


- Mike KB3EIA -