[Elecraft] Antenna Analyser - Phase Angle Sensor

[d.cutter at ntlworld.com]

I fancied doing this for my screwdriver antenna but I thought I could do something similar without actually detecting polarity:  simply, if I guess wrong the SWR will go the wrong way and I just have to reverse the switch; which could be done automatically.  I'd like to see the article to avoid the extra step.

73

David
G3UNA
> 
> From: J F <phriendly1 at yahoo.com>
> Date: 2007/03/16 Fri PM 12:02:58 GMT
> To: rohre at arlut.utexas.edu, 
> 	Elecraft Discussion List <elecraft at mailman.qth.net>
> Subject: [Elecraft] Antenna Analyser - Phase Angle Sensor
> 
> Stuart,
> 
> In the old Ham Radio Magazine, a 1988/89 issue there
> is a very simple circuit called a PHASOMETER by the
> author. It uses as zero center meter (although you
> could set up LEDs to perform the same way) to
> determine which side of resonance your antenna on. 
> 
> The specific purpose for this unit was for determining
> which way to skew your inductor to tune your mobile
> antenna. The author was going to incorporate it with
> an earlier motor driven inductor. He also suggested it
> as a tool for vision impaired folks.
> 
> I thought that it would be useful for increasing
> bandwidth tuning for a low band antenna.
> 
> If you're interested, I can find the article when I am
> back home sunday and make a copy. I have the article
> for the mobile tuner as well.
> 
> Cheers,
> Julius
> n2wn
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