[Lowfer] Virginia Stations

[riese-k3djc at juno.com]

I built a ferrite about 14 inches long and 1 inch diameter
picked up a bunch of 1/4 inch ones at a hamfest,, why I didnt
buy them all I dont know were 10 cents ?? glued them up
anyhoo
it works as a demo antenna . Doesnt work well as a DX antenna
although I havent tried it at a quiet location

I called ken back in the early 90s as I copied his MF beacon
sounded pretty old but we discussed loops as TX antennas
I have somewhere his LF notebooks,, vol 1 and 2 but I believe he had
another one which I dont have 

I made a good LF converter with a Mini Circuit Mixer and a INEX
4 Mhz xtal,, got real lucky as the xtal has no drift,, Added a simple
front end worked very well used it until I got an SDR IQ. The mixer
wanted
a bit more injection than the LO alone provided but it is immune to
overload
so I didnt add an amp to it KISS

Bob K3DJC

On Thu, 07 Feb 2008 14:25:00 +0000 k2ors at comcast.net writes:
> 
> 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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