K3 Spurious TX Spur

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K3 Spurious TX Spur

Walter Miller, AJ6T
My buddy K1VW, who is not on this reflector, asked me to look into a
problem with his K3, and I am turning to the reflector for assistance.  
John received a report from another station (not a local) of a spurious
emission while transmitting CW on 160 meters.  Evidently the spur was
loud enough to attract some attention.  I searched the reflector
archives for the past six months and did find anything on this topic.  
The other station mentioned that this is a known problem with the K3,
and that the fix involves clipping a diode.  This is all second-hand
information to me, and that is all I know about the situation.  Any
suggestions?

Walt, AJ6T
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Re: K3 Spurious TX Spur

Don Wilhelm-4
Walt,

I suggest that the K3 owner contact [hidden email] for assistance.
Many on-the-air comments that I have heard pass along inaccurate
information (about many subjects, not just the K3).  The only K3 mods
that I know about involving diodes are the KPA3 12V Sense Mod and theK3
VFO Noise Mod - these *add* diodes, and AFAIK, neither of these has been
known to create spurs, and definitely do not  involve "clipping a diode"
- most of the  K3 diodes are SMD, and I just cannot  relate "clipping"
to "removal" - methinks that fellow was misinformed.

73,
Don W3FPR

Walter Miller, AJ6T wrote:

> My buddy K1VW, who is not on this reflector, asked me to look into a
> problem with his K3, and I am turning to the reflector for assistance.  
> John received a report from another station (not a local) of a spurious
> emission while transmitting CW on 160 meters.  Evidently the spur was
> loud enough to attract some attention.  I searched the reflector
> archives for the past six months and did find anything on this topic.  
> The other station mentioned that this is a known problem with the K3,
> and that the fix involves clipping a diode.  This is all second-hand
> information to me, and that is all I know about the situation.  Any
> suggestions?
>
> Walt, AJ6T
>  
>
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html