[Elecraft] K2 v. K1

[Hisashi T Fujinaka]

On Thu, 23 Feb 2006, Rick Dettinger wrote:

> Ron, AC7AC, said:
> The K2 does this by using a
> PLL that tunes in about 5 kHz "steps" and then varies the PLL reference
> oscillator's frequency to tune smoothly in between those steps. So the
> tuning has the true smooth feel and spectral purity .
> I say:
> When I tune my K2 past a signal, I can hear the steps.  I also sometimes think I can hear steps when I tune my K1 thru a signal.  I assumed that this is due to the nature of the multiturn pot.  I think it is wire wound and that the wiper cuts the wire turns  suddenly.  It could also be due to jerky tuning , in spite of efforts to the contrary.  It is very subtle, unlike the K2.   Give me a smooth PTO with the K2 signal path.   My long term idea is to build a stable analog VFO, using my Sierra band modules for premixing, to drive my K2.    Rick - K7MW

I thought you were going to talk about the problem that occurs when
RFC15 is open. Then you can REALLY hear the steps. Mine went "bloop
bloop bloop" at would lose and regain lock with each step.

-- 
Hisashi T Fujinaka - htodd at twofifty.com
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte