[Elecraft] Re: Dumb K1 Question

[Wayne Burdick]

On Jul 25, 2006, at 10:54 AM, Dr. Dan Swartling wrote:

>
> I was just playing with it and it receives very well on all 4  
> bands, but when I tuned in some 17m SSB sigs I couldn't quite get  
> them in clearly, so I looked for a button to push to change  
> sidebands and can't find one. So, is the K1 really a CW only rig or  
> did I miss something in the menus? I really like it, and it has  
> that "cute" factor going for it, but it would be nice to tune in  
> SSB on 17m if I can. If not, oh well...

Hi Dan,

The K1 is a CW-only rig. SSB copy is difficult--because of the narrow  
crystal filter bandwidth--even for the "native" sideband (LSB). You  
can widen the filter to about 2 kHz and thus copy LSB with decent  
fidelity if you add a switch to the right side panel that temporarily  
substitutes 8V DC for the normal tuning voltage used by the varactor  
diodes in the crystal filter. To copy USB, you'd have to add another  
switch that temporarily switches in a different reactance in series  
with the BFO crystal, pulling it to the other side of the filter.

73,
Wayne
N6KR

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