[Elecraft] Revisting audio after absence from the reflector

[Steven Pituch]

Hi Tim,
I brought up this question a few months ago.  On say 40 meters with a narrow
filter setting I noticed I needed the preamp on to hear very weak signals.
Of course using the preamp on 40 meters made the signal harder to hear so it
was a catch 22.  I read all about squeezing a little more audio out of the
rig, but it seemed that the K2's audio was already optimized.

Then by chance I took off my old Heil Pro headset, and put on my cheap RS
Novus 71 headphones and I found that I had too much volume!  I took the
preamp out on 40 meters and could hear the Fox perfectly.  By comparing the
headphones side by side, in this case, the Heil set seemed to have an audio
notch at about 600 Hz.  I could hear the static around it but not the zero
beated signal. Raising the volume just increased the static.

So now I have plenty of volume by just switching headphones.  And its at
like 9 o'clock now instead of max.  Now in retrospect, I would think unless
one is partially deaf you would never need more volume than the K2 can give.


So try some other headphones first. Maybe the impedance match is not good
enough.  My second resort would be an external audio amp box with two
outputs so two people could listen at the same time.

72.5,
Steve Pituch, W2MY

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