[Elecraft] K2 S-meter output for antenna measurements?

[Ron D'Eau Claire]

Since you have Spectrogram, use it. It gives you a dB plot, which is the
most useful way to monitor signal levels as you rotate the quad. Be sure
to turn the AGC OFF, otherwise it will be constantly changing the
receiver gain to provide as stable an audio level at the output as
possible. In this case, you WANT the audio output to mimic the changes
signal strength. 

You still have to plot the azimuth pattern yourself, but it's a quick
and easy way to get the data.

Ron AC7AC
K2 # 1289
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Now that my K2 is on the air, filters aligned with
Spectrogram, etc., my thoughts return to tuning my 5 band
quad.  I have in mind picking off a voltage somewhere in the
K2 that is proportional to signal strength, feeding that to some sort of
A to D converter for my PC, then using the PC to plot single strength
around a 360 degree azimuth. Simliar ideas have been documented in the
ARRL antenna books using VU meters and X-Y plotters, but I can't help
but think someone has done this more recently with a PC.  Can anyone
point me to such a scheme, or provide hints for wading into this?
Thanks in advance.

Parker WD8JOL