It was 1/19 and 1/20/2008. I captured many screenshots of Spectran: http://www.kl7uw.com/raseti.htm bottom of the page the direct signal was 60-dB S+N/N and Moon echo was 20-dB S+N/N. Received on a 40m inverted-V with a FT-847 2.2 KHz bw in USB. Absolute signal level was affected by AGC.
They ran 360MW with 180 turnstyle antennas; HAARP webpage: http://www.haarp.alaska.edu/ 73, Ed - KL7UW At 02:29 PM 1/20/2011, Jeff Yanko wrote: >Hi Bob and all! > >I recall there was a HAARP experiment in, or near the 40 meter band. If I >recall correctly, Randy, K7AGE, had recorded it for a youtube segment. I >foget the power and gain at the site, but it was no doubt impressive. > > >73, > >Jeff WB3JFS > > > >----- Original Message ----- >From: "Bob Bruninga" <bruni...@usna.edu> >To: <amsat-bb@amsat.org> >Sent: Thursday, January 20, 2011 3:17 PM >Subject: [amsat-bb] 40m EME (AMSAT 0) > > > >> Subject: [amsat-bb] Re: FW: Re: em40 needed > > > > I misread this as something to do with 40m EME and got so distracted doing > > the calculations that I may as well post them. > > > > By my guess, if one could find an abandoned K mart parking lot with 160' > > spacing between light poles (about 30' high), one could hang 16 dipoles. > > If > > it was over GOOD swamp land, that might equal about 14 dB antenna gain. > > > > The path loss at 40m is 36 dB better than at UHF so the link would be > > about > > 0 dB SNR on a CW signal maybe. But from this one has to subtract a huge > > amount of noise on 40m. And it would only work at high elevations with > > really QUIET sun cycle. (you could point it with some phase > > adjustments)... > > > > But several dB of processing gain via DSP could bring it back up? > > > > These are only wild guesses. But it was fun. I'd love to see an > > expert's > > calculation just for the drill. > > > > Bob, WB4APR > > > > _______________________________________________ > > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > > Not an AMSAT-NA member? Join now to support the amateur satellite program! > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > >_______________________________________________ >Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. >Not an AMSAT-NA member? Join now to support the amateur satellite program! >Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com ====================================== *temp not in service _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
