Help figuring out missing part

[Rich McCabe]

I seem to be missing a cap in my K2 serial 4331. There are a couple parts in
question. C198 and C22.

I believe this small light blue cap to be C22 http://www.ctiowa.com/part.jpg

If that is C22, can someone tell me what C198 looks like?  Is it a ceramic
disc?

Thanks and 73,

Rich
kd0zv


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[Rich McCabe]

Yes, I would think so too. I don't inventory parts but the one thing I do is
take all caps and stick them in foam and get them all sorted. Guess at that
point it would be easy to inventory at least the caps.

My first K2 had no missing parts. This one was missing an IC on the control
board and one extra of another IC.

It is possible that the C198 got lost and I wont rule it out :) But, looks
like it is gone regardless. If it is nothing special, I will see if I can
find one locally. Have SSB, NB, DSP, 160 and 100 watt to build yet.

Thanks for the response.

73,

Rich

----- Original Message -----
From: "k4zm" <[hidden email]>
To: "Rich McCabe" <[hidden email]>
Sent: Tuesday, August 24, 2004 6:44 AM
Subject: Re: [Elecraft] Help figuring out missing part


> Rich:
>
> That is a rare thing to have a part missing in a kit from Elecraft.  I
have
> built twelve K2's and many many K2 options, three K1's and lots of
options,
> and three KX1's and have never had a part missing. I do an inventory of
all
> the parts on even the smallest of kits.  I inventory them one bag of parts
> at a time and dump them into  the lid of a shoebox. I sort them in plastic
> parts boxes and then they are handy when I need them.  You might check the
> envelope that the capacitors came in and see if the 27pf might be in it or
> it might be mixed up with other caps that look like it. Look at your 270pf
> capacitors.  They mark them 270 for 27pf and 271 for 270pf.  They look
about
> the same and it is real easy to confuse them and mix them up. Make sure
you
> have not install the one marked 270 in an place where a 271 should have
been
> used.
>
> 73
> Jim Younce K4ZM
> K2  SN: 18
>
>
>


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[Rich McCabe]

So I am going to try to pick up a capacitor locally. I am confused by the
value.

If I understand it correctly, the manual says caps marked with two digits
are the value in pf. Three digits markings use the third as a mutliplier.

The manual says its either "27" or "271". In this case wouldnt 27 be 27pF
and 271 be 270pF?

Sorry for the ignorance !

Rich




> Yes, I would think so too. I don't inventory parts but the one thing I do
is
> take all caps and stick them in foam and get them all sorted. Guess at
that
> point it would be easy to inventory at least the caps.
>
> My first K2 had no missing parts. This one was missing an IC on the
control

> board and one extra of another IC.
>
> It is possible that the C198 got lost and I wont rule it out :) But, looks
> like it is gone regardless. If it is nothing special, I will see if I can
> find one locally. Have SSB, NB, DSP, 160 and 100 watt to build yet.
>
> Thanks for the response.
>
> 73,
>
> Rich
>
> ----- Original Message -----
> From: "k4zm" <[hidden email]>
> To: "Rich McCabe" <[hidden email]>
> Sent: Tuesday, August 24, 2004 6:44 AM
> Subject: Re: [Elecraft] Help figuring out missing part
>
>
> > Rich:
> >
> > That is a rare thing to have a part missing in a kit from Elecraft.  I
> have
> > built twelve K2's and many many K2 options, three K1's and lots of
> options,
> > and three KX1's and have never had a part missing. I do an inventory of
> all
> > the parts on even the smallest of kits.  I inventory them one bag of

parts
> > at a time and dump them into  the lid of a shoebox. I sort them in
plastic
> > parts boxes and then they are handy when I need them.  You might check
the
> > envelope that the capacitors came in and see if the 27pf might be in it
or
> > it might be mixed up with other caps that look like it. Look at your
270pf

> > capacitors.  They mark them 270 for 27pf and 271 for 270pf.  They look
> about
> > the same and it is real easy to confuse them and mix them up. Make sure
> you
> > have not install the one marked 270 in an place where a 271 should have
> been
> > used.
> >
> > 73
> > Jim Younce K4ZM
> > K2  SN: 18
> >
> >
> >
>
>
> _______________________________________________
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> You must be a subscriber to post to the list.
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http://mailman.qth.net/mailman/listinfo/elecraft
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> Elecraft web page: http://www.elecraft.com
>
>


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[G3VVT]

Would think the marking for a 27pF capacitor of 271 in the K2 manual  may be
an error when compared to the markings for similar values. For  example: C43
on the RF board, 33pF is marked 330. The usual notation of this  type of
capacitors is the first two digits are the first part of the value and  the last
digit is the number of zeros after this with a 0  (zero) meaning no added zero at
the end and a 1 indicating an added  zero.
 
However it seems that this rule can be broken when it suits the  
manufacturer. This highlights the benefit of having a capacitance meter either  in a DVM
or a LCR meter being invaluable when such questions arise to be  sure. As a
matter of personal policy I checked the value of all capacitors and  resistors
before insertion when building my K2. Can save a lot of grief  later.
 
Bob, G3VVT
K2 #4168
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[Rich Lentz]

There is a mistake on the parts list page of Appendix A, RF Section for
C198.  You will notice that the caps above and below list 20 (or 200) and 33
(or 330)  but somehow C198 is 27 (or 271) - WRONG!  Should be 27 (or 270).

As I remember, when I built mine it was marked with a 27.  

Rich,
KE0X

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