a 80 meter loop should be 240 to 250 feet to be reosanant-----verne
----- Original Message -----
From: "Phil Sussman" <psussman@pactor.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, January 21, 2009 5:15 PM
Subject: [TenTec] Antenna question
This may be a bit off-topic - If so please forgive me:
I'm working with a fellow who has problems loading an 80M loop antenna
with
ladder line and a tuner. His antenna is about 380ft and I think that it's
a bit
short. I borrowed my Nye-Viking and the best that I can achieve is 3 to 1
match
at 3800 KHz.
At that point the tuner is applying MINIMUM capacitance. That makes me
think
that a longer antenna length is needed.
As an aside 40m loads no better 2.5 to 1, but 30m loads up OK.
If I take his balanced line and feed it as a long wire (one end
unterminated)
the system loads up just fine on 40m and 80m, but it is obviously
unbalanced.
Any quick hints appreciated -- I'm not the best with HF antennas.
PS. My 80m loop antenna is 420ft long and loads as balanced just fine.
de Phil - N8PS
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