Dear OMs and YLs,
When using the AlexLoop one always at a minimum starts out with the
antenna tuner bypassed and normally you leave it that way. I have had
occasion to use the AlexLoop mounted atop a steel reinforced concrete wall
and found that the minimum SWR was not good enough so I used the KX3 tuner.
The location was very good and I still made some good QSOs. Without doubt
I should have moved but the location was convenient as I had use of a part
bench looking out over the considerable height of Monticatini Alto in
Tuscany ( Italians please forgive my spelling).
With the AlexLoop or any magloop close by you can tune it and the
narrow band properties are not a big deal. It certainly is easier to shift
form 20M to 40M with an AlexLoop than with a portable vertical type antenna.
73 Doug EI2CN
-----Original Message-----
From: Elecraft [mailto:[email protected]] On Behalf Of
Richard Donner
Sent: 13 July 2016 04:15
To: [email protected]; [email protected]
Subject: [Elecraft] {OT} Alexloop Walkham Antenna
Hi Stan
I own an AlexLoop and a few of us hams went into a park and did some
signal comparisons on 20 meters. We compared an
Alexloop, a full size vertical with four radials, and a 1/2 wave end fed
for 20 meters.
I used an a/b switch on receive and transmit.
The vertical beat out the other antennas by less than an an s unit. The
Alexloop was almost as good as the full size vertical. The only drawbacks
I see with this antenna is that it needs to be in the clear. It also has
a very narrow bandwidth maybe 30Khz.
On a SOTA activation making phone contacts on 20 meters was quite doable
with 10 watts last year. You will need an SWR meter with a needle to
catch the quick dips as you tune the loop.
bye Richard
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