I just *know* there's an explanation for this K3 behavior

[David Windisch]

CONTENTS DELETED

The author has deleted this message.

[Eric Swartz - WA6HHQ]

Hi Dave,

This is normal relay switching of capacitors in the K3 Synthesizer PLL
VCO as you tune through different frequency ranges. This is done to keep
the kHz per volt tuning range of the VCO limited, which in turn
minimizes TX and RX phase noise.

73, Eric  WA6HHQ

---
www.elecraft.com


On 8/24/2011 1:55 AM, David Windisch wrote:

> Hi, all concerned:
>
> I swl with the K3, and have been trying to make it scan the widest possible
> spans outside the ham bands.
>
> In the process, I have accumulated a list of frequencies (found by tuning
> first A, then B, from 490 KHz to 30 MHz) where the K3 behave in interesting
> ways.  The "A list" of frequencies differs somewhat from the "B list", and
> tuning down from 30 MHz to 490 KHz produces slightly different behavior.
>
> For example, set A to 8.999
> Tap A>B
> Tune A up through 9.000 while observing B
> Did you hear any relay sounds?
> Tune A back down through 9.000 while observing B
> Tune B back and forth through 9.000 while observing A
>
> Any help out there with an explanation, please?
>
> Brgds,
> Dave Windisch, N3HE
>

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