Steve,
All you need to do is tack an NPO capacitor in parallel with the 68 pF
C2 - try different values until you find the range that yo want.
After finding the range, then adjust the turns on L1 to place the lower
end of the range where you want it.
No other tuning should ge required, although
Hi! I've had an early (S/N) K1 since mid-2001; bought it already built from
the original owner, has 80kHz bandwidth. Am I correct I just need to change
C2 and re-peak the filter board to widen the range? Is tacking another cap
in parallel practical? I'm also considering just re-aligning the VFO
Hi Curt,
I like the 150 kHz tuning range. Mine is actually 170 kHz, which, of
course, gives an average rate of 17 kHz per revolution with the 10
turn pot. I think this is still slower than the top rigs of my youth,
which we though was quite good. I don't remember hearing complaints
abou
I really like the ability to get up higher and also like the "fast
qsy" ability that the wider range gives you. Some feel that its a bit
fiddly and you have to turn the knob a bit too finely but I honestly
kinda like the speed of the knob and I also like being able to pick up
WWV to verify my freq
You really don't need to change the crystal, unless you want to receive WWV @
10 mHZ. It would be easier to leave the crystal as it is, in case you go
back.
As for the filters, if you leave them alone nothing will change on the band
segments you currently use. On 40 meters, you may want to peak t
I built my K1 awhile ago with a VFO range of 80 kHz, also a 4 band filter and 2
band filter.
With recent increase in QRM levels on 7030-7040+-, am considering expanding the
range to 150 kHz.
This will allow me to work the old Novice segment on 40M. Seems the only
change needed is the band cr
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