[Elecraft] Software for Sig/Niose measurement

[Rich Lentz]

If you are questioning how to best adjust L34 - "I.F. Amplifier Alignment"
section of "Alignment and Test Part II," I  used Spectrogram.  I had meant
to put this hint on  the reflector long ago and keep forgetting.

Follow the instructions for "I.F. Amplifier Alignment."  When you get to the
last step plug the PC sound card into the Speaker Jack (not Headphone as it
attenuates some high frequencies).  You will notice some noise spread across
the spectrum displayed. Make sure the XFIL is set for FL-1 OP-1.  Now
continue to adjust L34 for a compromise of the lowest displayed noise and
the highest level of the tone.  You will find a point where the noise is
almost non existent. 

Even though I had adjusted this to what I thought was the best by "ear,"
after using this method and then re-adjusting the ARC threshold.  I was
amazed at the difference in sensitivity and audio level.  Maybe this is one
of the problems/reasons some people complain about "low output volume."

Rich
KE0X 


Hi Folks,
Is there any soundcard software to assist in optimum tuning for 
best sig/noise on SSB, similar to a SINAD meter ?.
thanks
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