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 <b...@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 <m...@maxsmusicplace.com> > To: Discussion of precise time and frequency measurement < > time-nuts@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. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.