[Elecraft] K1 tuning range issue.
David Brown
dbbrown624 at gmail.com
Fri Jun 19 15:03:58 EDT 2015
Gil,
My K1 is a two band (40/20) model purchased in 2001. I too was concerned
with the lost "wiggle room" at the bottom of the bands, not to mention
different values on the two bands. The 150 kHz VFO range ( I got 177 kHz)
was a bit too touchy for me yet the lower range was nice for smooth tuning
but a little limited on band coverage. I decided a tuning range of 100 kHz
on 40 would be a nice trade off between band coverage and smooth tuning.
Experimentally I got this by changing C2 from 68 pF to 78 pF, then adding
14.1 pF across L1 to adjust the VFO range. Silvered mica capacitors were
used for the mods. I wound up with:
104 kHz band coverage
1.1 kHz lost wiggle room below 7.0 mHz
7.4 kHz lost wiggle room below 14.0 kHz
73, Dave K8AX
More information about the Elecraft
mailing list