[Elecraft] Spurious signal after k2 click mod

[David A. Belsley]

Vic:
   I just did the mod earlier this evening.  I used it in several qsos, 
including one that got a pretty critical listen, and all seemed fine.  
However, after reading your message, I went down and listened to my 
signal in my other rxs.  With the Drake 2C, I could hear what seems to 
be a very weak spurious signal as I tuned down toward zero beat.  This 
effect did not seem to be as noticeable, if at all, with the Drake R4B. 
  When one is so close to the rx, artifacts are to be expected.  So I 
guess the jury is still out.  I could definitely hear something with 
the 2C, but whether it was the K2 or the 2C at work, I can't say.  How 
about some input by others who have made the mod?  It's hard to see how 
this mod to the control board could produce spurious signals in the RF. 
  Meanwhile, I'll try to get more on-the-air feedback tomorrow.  It's 
bed time now.

best wishes,
dave belsley, w1euy

On Feb 28, 2004, at 8:36 PM, Vic Rosenthal wrote:

> I just made the click mod, and I am seeing a troubling phenomenon.  I 
> hear spurious signals above and below the main signal by approximately 
> the amount of the sidetone pitch.  Very roughly, I believe that they 
> are about 40-50 db down.  I was alerted to this by another station, so 
> it's not in my second rx.
>
> Of course it's possible that I had this problem before I did the mod, 
> but nobody noticed it.  Could I ask someone who does have the mod 
> installed to check for this?
>
> Any idea of what could cause this?
>
> -- 
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
>
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