Hi Nick, That alternative Perseus software we discussed earlier reads out carrier measurements to four decimal places. I don't remember the exact, claimed accuracy at the moment, but I think it was 0.2 Hz. (after auto-calibration to a station >1000 kHz with a known accurate offset).
73, Guy Atkins Puyallup, WA ------------------------------ > Date: Tue, 26 Jun 2012 15:49:48 +0000 > From: Nick Hall-Patch <[email protected]> > To: Mailing list for the International Radio Club of America > <[email protected]> > Subject: Re: [IRCA] 1566 TA again > Message-ID: > <20120626154953.OZMI14893.priv-edtnes26.telusplanet.net@edtncm02> > Content-Type: text/plain; charset="us-ascii"; format=flowed > > Very nice Guy. By 0530UT, 1566 was pretty much gone here, so > maybe you are getting a better signal at your location. Now try > 576, although that faded pretty rapidly after I'd reported it. The > irony is that I don't recall these signals at a time of year when > "conventional" TA reception is more likely. > > I didn't realize you could get such accuracy in frequency using the > Perseus. I need to do a fair bit of calculation here, fortunately > using a spreadsheet, to get to within maybe two tenths of a Hertz, > using an R8, tuning off to one side to give a 400Hz tone, then > looking at the resultant het with Spectran. > > The 1566 carrier appeared to average 1565.9998 here (within that two > tenths of a Hertz), but was badly smeared over a couple of Hertz, I'm > guessing due to Doppler shifts in the ionosphere? > > Ah yes, extreme minimalist DXing... > > best wishes, > > Nick > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
