K1 VFO tuning range

[SQ5FWR]

Hi,

I,ve built K1 and have over 100kHz tuning range. Can you advise me how to change it to have less, for example only first 60kHz portion of the band and get better tuning accuracy?

73 de SQ5FWR Rafal

[Don Wilhelm-4]

Rafel,

As noted in the manual on page 38, two values for C2 are supplied with
the kit, but other values can also be used.
Adjust the value of C2 to provide the range you desire and then adjust
the turns spacing on L1 to place the OSC frequency at or slightly above
3090 if you wish to cover the low end of the amateur bands.
Smaller values for C2 will provide a smaller tuning range.  If you want
60 kHz, I would try 47 pF at C2 and see how close that comes.

73,
Don W3FPR


SQ5FWR wrote:

> Hi,
>
> I,ve built K1 and have over 100kHz tuning range. Can you advise me how to
> change it to have less, for example only first 60kHz portion of the band and
> get better tuning accuracy?
>
> 73 de SQ5FWR Rafal
>
> -----
> K1 #2811
>  

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[Jim Harris-2]

Good afternoon, Folks.

 

I recently purchased a VERY FB K2/100 with KAT100 off e-Bay.  It's an
unbelievable rig as you all know.  With it came the QRP Top Cover with the
Speaker installed.

 

I'm thinking about building and installing the KAT2 into this Cover so I can
more easily carry it into the field or out to my patio.  [I'm not a real kit
builder (only a couple of kits under my belt) or "tech type" but more of a
"dare to dream" kit builder: in other words, I'd like to give this
"build/installation" a shot as a way of occupying my leisure time & keeping
me out of trouble.  I'm 79! :-)]

 

If this endeavor is more complicated than I envision, please feel free to
say so and I will get a pro to do it for me.  [I AM thinking of going with
the "pro wound" Toroids by the "Toroid Guy".]  If it's thought this might be
a "do-able", then also please feel free to warn me of pitfalls you know
about from your experience/s with this kit.

 

Thanks & Best 73.

 

Jim.....

WA4NTM

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[Matt Palmer-4]

If you can melt solder you can build an elecraft kit, even 'roids are
easier than everyone makes them out to be (though they can be the most
time consuming part of the kitbuilding.)

Matt
W8ESE
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[Don Wilhelm-4]

Jim,

So you are 79!  Congratulations, but age really has nothing to do with
building unless it has rendered you with hands so shaky that you cannot
insert component leads into holes and do a good job of soldering, and/or
if your eyesight has dimmed to the point where you cannot discern where
to place those leads - magnifiers will help if you are beginning to have
those focusing problems.

All kits, no matter how large or complex go together the same way - one
part at a time, let the instructions be your guide, don't skip around,
the Elecraft instructions are written in the best order to proceed and
have been field tested by a substantial group before release.

All in all, if you can read and follow the instructions correctly, and
can do a good job of soldering, then you can build Elecraft kits at any age.
If you don't understand something in the instructions - well, that is
what this list is about, feel free to ask and help will likely come
along quickly, and if you have trouble, ask about that, we can usually
help, but if not, an email to [hidden email] will bring you
further assistance.

73,
Don W3FPR

Jim Harris wrote:

> Good afternoon, Folks.
>
>  
>
> I recently purchased a VERY FB K2/100 with KAT100 off e-Bay.  It's an
> unbelievable rig as you all know.  With it came the QRP Top Cover with the
> Speaker installed.
>
>  
>
> I'm thinking about building and installing the KAT2 into this Cover so I can
> more easily carry it into the field or out to my patio.  [I'm not a real kit
> builder (only a couple of kits under my belt) or "tech type" but more of a
> "dare to dream" kit builder: in other words, I'd like to give this
> "build/installation" a shot as a way of occupying my leisure time & keeping
> me out of trouble.  I'm 79! :-)]
>
>
>  

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[SQ5FWR]

Thank you very much Don for the very quick reply!

I was not sure if it is only this one cap and nothing else to change.

Best 73

de SQ5FWR Rafal