[Lowfer] Virginia Stations

[Pete Cranwell]

Thanks for the input.

I built a few good size loops back in the 60s, some with feedback for
regeneration.  Most of mine were 4-5 foot accross.  I worked 100 miles  on
189.5 but it was a vert.

-----Original Message-----
From: lowfer-bounces at mailman.qth.net
[mailto:lowfer-bounces at mailman.qth.net]On Behalf Of k2ors at comcast.net
Sent: Thursday, February 07, 2008 9:25 AM
To: Lowfer on QTH.Net
Subject: [Lowfer] Virginia Stations



Pete,

Thanks for the history on Ken Cornell.

>  How about a large powdered iron core loop,
>say somethibng about 2 inches in diameter and 2-3 feet long?  I might build
>one to see how it works but first I need to get my Orion fired up on the
low
>freqs.

  There was a paper circulated on the RSGB reflector from one of the U.K.
magazines - it turns out that its impossible
to get enough capture area with a ferrite loop to provide enough signal for
a good signal to noise ratio - no
comparison to a decent air core loop that is several feet across. The RSGB
paper even had a ferrite loop a couple of feet long as you suggest. The
ferrite loops - no matter how big where an order of magnitude worse for S/N.

>Does anyone knpow about the palomar comverter?  Is it worthwhile?

I have one, lots of gain good for NDBs but not stable enough for QRSS
reception.

>I don't build a lot these days because my eyes ain't so good and the parts
>supply is limited but I would be interested in a good front end for my
Orion
>and love to press a powdered iron core for a loop.

  Perhaps you can take a building block approach, buy a TCXO, get a
Mini-Circuits mixer some tuned circuits and
wire them up as 'building blocks'

Check out:
http://www.kc3ol.dynip.com/forums/index.php

For other photos ideas etc.

--
73 Warren K2ORS
WD2XGJ     136-140kHz
WD2XSH/23 505-510kHz
WE2XEB/2   160-189kHz
WE2XGR/1 505-515kHz

FN42hi
http://www.w4dex.com/wd2xgj.htm
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