[Elecraft] L34 and headphone jack question.....

[Don Wilhelm]

Ed,

When you evaluate the L34 adjustment - look not for just the peak, but
instead look for the largest Signal to Noise ratio.
If you are observing it with Spectrogram - use the 7.000 birdie rather than
a wideband noise source and adjust L34 for the biggest DIFFERENCE between
the peak of the signal (top of the display) and the noise floor (bottom of
the display).  If your K2 is anything like most of them, you will find the
correct adjustment is with the slug close to the top of the can.

The headphone jack has no nut on it and on my K2 is actually recessed a
small bit behind the front panel.  So if your particular headphones are
causing a strain on the jack, you might want to implement an adapter cable
having a small stereo plug at the K2 end and a jack to match your headphones
at the other end - that way the weight of your headphone plug will lay on
your desk and place no strain on your K2 jack.

73,
Don W3FPR

----- Original Message -----
>
> Anyways...two more minor questions: using the Spectrograph (great great
> product!!) I found L34 rising towards the bottom end of the the coil and
> wonder if I should bother to change a component to bring L34 back into its
> mid-range? Is so, which component? Or, is this worth the bother? My
receiver
> sensitivity seems to be the same as my ICOM 751A but with a bit less
noise.
>
> Second question....the headphone jack on the front panel doesn't protrude
> enough to put a nut on it, is this by design? the reason I ask if this is
> normal cuz when using my big heavy-cabled headphones the plug flex some
> which can't be good!
>