Re: [IRCA] KXTO QRSS Sample File

["Chris Black" <n1cp@xxxxxxxxxxx>]

Guess I must have missed something. I am assuming that KXTO is a radio 
station and there will be a test with CW transmission? When will this test 
be and what frequency/time, etc.

Chris Black,
Cape Cod
----- Original Message ----- 
From: "Les Rayburn" <les@xxxxxxxxxxxxxxxx>
To: <ABDX@xxxxxxxxxxxxxxx>; <mwc@xxxxxxxxxxx>; "Mailing list for the 
International Radio Club of America" <irca@xxxxxxxxxxxxxxxx>; 
<amdx@xxxxxxxxxx>; <wghauser@xxxxxxxxx>; <lynnhollerman@xxxxxxxxx>; 
"Discussion of AM, FM, and TV DX" <amfmtvdx@xxxxxxxxxxxxxxx>; 
<am@xxxxxxxxxxx>
Sent: Tuesday, June 05, 2007 4:50 PM
Subject: [IRCA] KXTO QRSS Sample File


>
>
> For those who wish to experiment with receiving QRSS (slow speed Morse 
> Code)
> transmissions prior to the KXTO Test, Brandon Jordan who runs the very
> informative www.dxtests.info web site has posted a sample file that will
> closely match the actual file for the test. It's available at:
>
> http://www.dxtests.info/_files/KXTO 10 Minute File.wav
>
> You can download a free Spectrum Analyzer called "Argo" at:
>
> www.weaksignals.com
>
> Keep in mind, that what you're really looking at is a audio frequency
> spectrum analyzer, not RF. You're feeding an audio signal from your radio
> (headphone jack, or other output) into one of the inputs on your computer
> soundcard (MIc, Line, etc.) and then viewing what that audio looks like.
>
> Using this technique it's possible to detect slow speed Morse Code signals
> well below the noise, sometimes as much as -20db! Using this technique,
> world wide reception of the KXTO DX test may be possible.
>
> In advance of the test, I'd concentrate on looking at the carrier signals 
> of
> various AM stations using USB, LSB, and CW modes. Adjust levels on the
> receiver output, soundcard input, etc. until you get nice, clean images 
> that
> are free of distortion. It's easy to overdrive the soundcard with too 
> "hot"
> of a signal.
>
> The actual transmission will be at 2.5khz and you should be able to
> literally "read" the dots and dashs of the
> QRSS transmission spelling out, K-X-T-O.
>
> In Morse that looks like-
>
> K= Dash Dot Dash
> X= Dash Dot Dot Dash
> T= Dash
> O= Dash Dash Dash
>
> It's a great mode, and potentially a nighttime IBOC-Beater! You can learn
> lots more at:
>
> http://www.w0ch.net/qrss/qrss.htm
>
> http://www.ussc.com/~turner/qrss1.html
>
>
>
> 73,
>
> Les Rayburn, N1LF
>
>
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