[time-nuts] Loran, GPS, Lightning, Timing

[paul swed]

It was QST and Max is right. I built it. There was a e-field antenna for
amplitude and the crossed antennas the XY access. I guess the old brain has
somethings correct.
Now can I remember the tube line up. Heavens no. :-) The CRT was a little
mil surplus 3p...
But enough of that. Whats the chance of finding the article that would be a
kick.
Regards
Paul
WB8TSL


On Fri, Jun 27, 2014 at 12:28 PM, Bob Stewart <bob at evoria.net> wrote:

> You might be thinking of the file that David Byrne sent  to the HP list
> last year on 9/7/13.  It was an article by C. L. Stong and I think it was
> published in The Amateur Scientist in 1963.  You should be able to find it
> in the HP list archives.
>
>
> Bob
>
>
>
> ________________________________
>  From: Max Robinson <max at maxsmusicplace.com>
> To: Discussion of precise time and frequency measurement <
> time-nuts at febo.com>
> Sent: Friday, June 27, 2014 11:14 AM
> Subject: Re: [time-nuts] Loran, GPS, Lightning, Timing
>
>
> I think the QST article being referred to in this thread is one that I
> remember rather clearly.  I kept the issue for a long time but it got away
> from me somewhere along the line.  It was a lightening direction finder
> using a display much like a radar PPI.  It used two crossed untuned loops
> and a vertical.  All three signals were amplified using tubes and one of
> the
> loops was fed to the horizontal deflection plates of a CRT and the other
> loop's signal was fed to the vertical plates.  The signal from the vertical
> was fed to the control grid of the CRT.  The project was essentially an XY
> scope built from the ground up.  He suggested figuring out the polarity of
> things by waiting for close lightening that was visible and correlating
> sightings with the display on the CRT.  You wouldn't use a general purpose
> scope because the fair weather condition would burn a spot in the center of
> the screen.  One more thing.  He wound the loops in hula hoops he had cut
> open.  I still have two hula hoops awaiting the project.  The bandwidth of
> his amplifiers was low audio to about 100 kHz.  I suspect that in today's
> radio environment some tuned traps would be necessary to notch out some of
> the strong signals in that frequency range.  You now have all the
> information I have and I am sure I could build one if only I could find the
> time.
>
> Regards.
>
> Max.  K 4 O DS.
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