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Message-ID: <3.0.1.16.20001208130344.2e07d346@mail.cc.kuleuven.ac.be>
Date: Fri, 08 Dec 2000 13:03:44
To: rsgb_lf_group@blacksheep.org
From: "Rik Strobbe" <rik.strobbe@fys.kuleuven.ac.be>
Subject: Re: LF: LEK's QRSS-CW signal copied in Canada using CRUNCH
In-reply-to: <200012062125.QAA6027635@indyweb.cgocable.ca>
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Hello Bill,

Congrats on the QRSS reception of LEK. A distance of 1500km seems very good
for just 1W input. Would be interesting to know at what time you copied
LEK. CFH (on Canadian naval station on 137kHz) had a very huge peak in the
UK on 6 december arround 6UT.

73, Rik  ON7YD

At 16:23 6/12/00 -0500, you wrote:
>If you go to my web page at:
>
>http://cafe.rapidus.net/bill1/bbs.htm
>
>down at the bottom of the page you'll find a link you can use to
>download a file called QRSS-LEK.ZIP - it has a few seconds of WAV
>file snipped from last night's overnight CRUNCH run trying to hear
>lowfer LEK.
>
>Although I've copied Lyle before using BPSK, I believe this is the first
>time I copied him on CW; the signal came through in the wee hours of the
>morning, Wednesday Dec. 6th, 2000.  I have Lyle's co-ordinates in
>Aitkin MN as 46.53013N, 93.71042W and my QTH in St-Adolphe d'Howard, PQ
>Canada is at 45.9351N, 74.2993W.  Just re-calculated the distance using
>Clarke's ellipsoid: it works out to 1495 Km or 929 miles.
>
>Antenna was a 30 x 20 foot rectangular tuned loop.  Rx was a Kenwood
>TS850S with external freq standard.  Computer was a Compaq laptop
>with a 100 Mhz Pentium processor running CRUNCH V3.0.  An S16 PCMCIA
>soundcard was used for 16-bit audio input.  CRUNCH settings were:
>40:1 time compression, 800-Hz CW tone out, 300-Hz bandpass filter on
>the output.  If you have CoolEdit handy you can do a frequency analysis
>of this file (select the entire snippet and press the SCAN button) -
>it shows Lyle's signal on 800-Hz jutting up just a little over the
>smoothed background noise envelope.
>
>If you listen carefully you can just hear Lyle's CW ident in there -
>starting about halfway through the audio snippet, you'll hear "LEK"
>very distinctly.  The signal is weak so you may have to play it over
>a few times in LOOP mode before you get it, but it's definitely there.
>This is a good example of a signal that seems to come up out of the
>noise when you listen to it over and over.  It's the equivalent of
>the "GRAB" process but done in your head.  Pretty neat!
>
>VE2IQ
>
>
>