[Elecraft] !!! K1 DDS VFO Retrofit - Possible !!!

Sun Dec 28 22:26:00 2003

Does Giuliano, I0CG have a web site?

dt
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--- Oscar Diez <[email protected]> wrote:
> 
> Hi Brad and others,
> 
> retro fitting a DDS is possible in the K1. Band switching is not a problem,
> since the VFO always runs on the same frequency on all bands......
> (see also the previous comments of Mike, KK5F)
> 
> Giuliano, I0CG, the "inventor" of the K1 SSB RX/TX board is using a DDS
> VFO in his K1. He replaced the VFO potentiometer on the K1 front panel
> with an optical encoder (same size as the original potentiometer)
> for tuning his DDS VFO.
> 
> But: 
> I see no real need to fit a DDS into the K1 unless you want to use it
> over a larger bandwith - such as together with I0CGs SSB board.
> 
> By the way, I have been a beta-tester of Giuliano's SSB board and it
> really works pretty good. (still using a severely modified prototype
> board here inside my K1)
> 
> Worked some rare stations with my K1 and 5 Watts in SSB during the 
> CQ WW DX Contest: C5Z, A61AJ, D44TD, VP5DX, KH0AA. (even managed to 
> do a one day QRP WAC in SSB on 26. Oct. with the K1). Antenna was
> a 2 x 33ft doublette with balanced feedline.
> 
> I do not use a DDS here yet. I am running the original VFO at 250 kHz
> bandwith....that makes tuing a bit more "challenging", hi, but I am 
> still able to tune the rig. (and K1 SSB TX audio is quite nice)
> 
> Best 73 de Oscar, dj0my
> 
> K1 #1484, CW & SSB !!!!!!  QRP-TRX
> 
> 
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