[Elecraft] More ideas for K2 modification

Thu May 9 14:04:00 2002

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Lyle Johnson

>I'd like to see the BFO, and the PLL reference, generated from a DDS,
so the "steps" at the PLL A
>reference frequency wouldn't occur.  It would also eliminate the
offsets you often get between Rx 
>and Tx when running PSK31 or other digital modes whtough the SSB
section.

Good idea - but a quite fundamental change to the design of the K2! I
believe that smaller steps could be achieved with the PLL also, and that
it possibly is a matter of software setup.

>And it would make passband tuning a breeze :-)

Doesn't this require a dual-conversion receiver where the second
oscillator is offset from its normal frequency?

>Then add a notch filter, or auto-notch (DSP) and the SSB section would
be nearly as good as the CW >section is!

73, Sverre

Sverre Holm, LA3ZA
Asker, Norway (59.8N, 10.4E)
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www.qsl.net/la3za
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