
May 8th 14, 03:18 AM
posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jan 2012
Posts: 26
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80m/40m fullwave resp. 2*fullwave horiz. loop
At Wed, 07 May 2014 17:00:25 -0700, vk4kx.bernie rearranged some electrons
to write:
On Friday, August 9, 1996 5:00:00 PM UTC+10, Kebsch wrote:
Hi,
I am looking for a simple wire antenna for the 80m band (and for 40m
also), which will cover a range (radius) of about approx. 300 miles and
has a more or less 360 degrees radiation pattern. Also I have not very
much time for testing (a few hours only). Any good idea?
If I would hang up a full wave lenght horizontal loop for the 80m band,
which will be a 2 wave lenght horizontzal loop for the 40m band,
approx. 25ft (8m) over the ground only, some questions will rise up ..
a) would you expect a more or less 360 degrees radiation pattern,
because the loop is hanging at 1/10 resp. 1/5 of lambda about the
ground (a more or less "wet" meadow)?
b) which normal/typical working range (radius) would you expect during
the
day 80m/40m? 100, 200, 300 or more miles?
c) which impedance would you expect at (80m/40m)?
d) which type of feeding line and matching method would you recommend?
e) any further comments and recommendations?
f) should I simply forget this idea? :-)
Please respond via e-mail (direct) and many thanks for your help in
advance.
73 de Waldemar, DK3VN --
E-Mail: .. or .. Packet Radio: DK3VN @
DB0NOS.#NRW.DEU.EU Big antennas, high in the sky, are better than small
ones, low! [bah]
I use a full wave loop (Square) on 80/75m here in Australia and feed it
in the corner with 75ohm coax, it's resonant on 3.770 with a 1:1 SWR,
but I tune it slightly when I operate up or down the band. I have had a
lot of success during Grey line to work all over the world in the DX
window. I have worked Europe, SE Asia & China, Russia, Scandinavia, USA,
Canada, Alaska, Central America, South America, Southern & Northern
Africa.
My loop is tilted to about 45% and faces North East down a valley to
improve the lobe directions, rather than sending the signal into the sky
as a cloud warmer.
So I'm interested to know how things are going for you on your antenna.
Regards,
Bernie VK4KX
I guess you realize you are responding to post from 18 years ago.
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