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I just received a couple of the KB-5 units from a gentleman in Maine who makes
them. As you mentioned, I don't think the QB-18I transformers are in production
any longer. I got them on Ebay many years ago. They are an 18:1 unit. The s/n
difference was what was really pronounced. I live in a noisy area, which
influenced my choice with the ALA 1530ln. Living as far inland as I do, I
anticipated the need for amplification, as quiet as practical. The ALA 1530ln
was so quiet compared to what I was accustomed to, that at first I thought
something was wrong with the antenna. Further evaluation revealed that the s/n
of that antenna is simply head and shoulders above anything I had used in the
past. It was just behind the Conti loop as far as apparent gain and equivalent
in the s/n category. I would add that I thought that the s/n of either the KB-5
or the QB18I was also degraded by the introduction of the DX Engineering RPA-1
preamp. The "cleanest", most intelligible signals were with either the ALA
1530ln, or the other two transformers without amplification. This was my first
go at a vs b vs c testing, with me climbing up a ladder switching out antenna
transformers during the brief window of TP signals present at this location. I
must confess that a Grayland session right after the 2006 IRCA Convention
hosted by Pat Martin at Seaside left a sustained and indelible interest in TP
dxing on me! While health and other considerations influenced me to move back
down to town from the mountains where bogs and EWEs abounded, I will continue
to squeeze all of the blood out of this "turnip" that I can, hi!
Craig
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On Sat, 9/17/16, Nick Hall-Patch <n...@ieee.org> wrote:
Subject: Re: [IRCA] Inland TP's
To: "Mailing list for the International Radio Club of America"
<irca@hard-core-dx.com>
Date: Saturday, September 17, 2016, 12:32 PM
Interesting results
Craig. It sounds as if the FLG-100LN isn't
functioning properly. (first thought...power supply?)
When you say "outperformed" was it in raw gain, signal to
noise or ?
I'm not familiar with either the KB-5 or QB-18I.
Are these no
longer in production?
best wishes,
Nick
At 14:17 17-09-16, you wrote:
>....
>I did some testing with transformers on my wnw Conti
super loop this
>morning. Between an FLG 100ln, a
KB-5 MW/LW balun and an Erickson
>QB-18I. Interestingly the KB-5 and QB-18I consistently
outperformed
>the FLG-100ln on the loop, with and without the use of
the DX
>Engineering RPA-1 preamp. The ALA 1530ln held it's own.
I used JOUB
>and 1566(presumed HLAZ) as the test frequencies. The
test was
>limited to challenging TP DX targets for the Midwest.
Nick Hall-Patch
Victoria, BC
Canada
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