[Elecraft] SN 2006/Rev B

[Rod N0RC]

WOW!

What difference. Most notable features:

    o sidetone, very smooth sweet tone
    o The low voltage-drop reverse
      protection diode.
    o Frequency stability improvements of
      the BFO/PLL

But _the_ best, and my favorite, the filter symmetry. In addition to
the Rev B. mods, I added the matched crystal set. I aligned the
filters with Spectrogram, the CW plots are nearly mirror image, and
flat, about the center frequency. There is no frequency shift of a
zero beat tone as I cycle through the various bandwidths, and CW/CW-R

After careful tweaking, the Upper and Lower SSB settings sound nearly
identical. (Tested by zero beating an AM signal (WWV) and switching
between Upper to Lower sideband)

This mod kit is a must have for anybody with a K2 SN below 3000. Like
I said, WOW!

*** Happy Holidays ***
73, Rod N0RC