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Re: Topband: Signal source

To: Clive GM3POI <gm3poi2@btinternet.com>, 'TopBand List' <topband@contesting.com>
Subject: Re: Topband: Signal source
From: Russ Tobolic via Topband <topband@contesting.com>
Reply-to: Russ Tobolic <erusst@yahoo.com>
Date: Tue, 25 Nov 2014 15:55:36 +0000 (UTC)
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Hello Clive;
Check out the  IV3PRK website-  www.iv3prk.it  under "receiving antennas" and 
then the "rx ant. tests" tab.Luis has a circuit using a 1.843 crystal 
oscillator.  I use the same device without the tuned circuit, just hanging a 1 
meter wire off the outputpin and it works fine for me, tweaking receiving 
loops.  However, you may need the tuned output circuit plus an amplifier if you 
are working at 10 wavelengths.  The only thing I added was a multivibrator 
circuit to key the oscillator on and off to discern from any other possible 
signals.

Russ, N3CO      From: Clive GM3POI <gm3poi2@btinternet.com>
 To: 'TopBand List' <topband@contesting.com> 
 Sent: Tuesday, November 25, 2014 7:29 AM
 Subject: Topband: Signal source
   
Hi, Can anyone recommend a stable low power signal source suitable for
tweaking RX antennas. I only need 160m and will only be used within say 10
wavelengths. Preferably something off the shelf. Thanks Clive GM3POI

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