Re: Topband: Signal source

[Herbert Schoenbohm <herbs@vitelcom.net>]

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@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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