Dave,
This is a good question. I have had line cords which came within
inches of the antenna and did not seem problematic but a fan a foot distant
was. The one thing is that you can tune in a station and try moving the
antenna. I know this is not quantitative - these are just my experiences
in a timber frame home.
Of course this is not a problem on top a mountain and so maybe the
compensations allowed by height and being in the open compensate to a large
degree for the antennas deficiencies. The Alex Loop is very portable and
can be set up inside a room and it works but I had to work for most of my
QSOs. The one exception being at the tail end of a contest when the big
guns were hungry in the USA and I worked fourteen Ws running ten watts and
the Alex Loop inside the shack. It is impractical to be separated from
the Alex Loop by any distance as one needs to tune the antenna if you change
frequency by more than 20 kHz or so. Still I could operate and monitor
from both my sister's and brother's spare bedrooms. It is neat to be
running the KX1 with four watts and work across the Atlantic with a small
inside antenna - it can also require some effort.
73 Doug EI2CN
P.S. QRP with my 4 element SteppIR at 24M / 80 feet is not the same as QRP
with an Alex Loop and 5 Watts.
_____
From: David Christ [mailto:radio...@mchsi.com]
Sent: 03 November 2013 20:14
To: Doug Turnbull
Cc: Elecraft Reflector
Subject: Re: [Elecraft] [KX3] KX3 with Alex Loop
How close is too close?
David K0LUM
On Nov 3, 2013, at 1:27 PM, Doug Turnbull wrote:
You must be selective in where the AlexLoop is
positioned; too close to some wires or metal and it may not perform as you
would like.
73 Doug EI2CN
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