Topband: Signal source

[Herbert Schoenbohm]

The MFJ 259B  is a simple way to provide a 160 meter signal source with 
a small rubber ducky attached to the PL-259 output.  It may not be the 
most stable signal source but it will be OK for most RX antenna tests.


Herb, KV4FZ
On 11/25/2014 11:55 AM, Russ Tobolic via Topband wrote:
> 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 at btinternet.com>
>   To: 'TopBand List' <topband at 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
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
>    
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband