[Elecraft] RF Board C22 & C33 Cap Identity (K2 RF Board)

[Nigel Hayton]

On Mon, 12 May 2003 13:10:15 -0700
Michael wrote
"I am having trouble identifying C22 and C33 on the RF board. After
searching
through the Archives, I am still unsure if the two remaining caps I have
labelled 2.7C
are the correct caps for these positions. I do not have a measurement
instrument to check their values either. Both are small, blue dipped =
caps
with only 2.7C marking
on one side only. Thanks for any assistance you can lend."

Michael,
The blue caps marked 2.7c are the ones supplied for C22 and C33 HOWEVER =
a
subsequent errata sheet changed the C33 to 2.2pf.   I queried with =
Elecraft
if it was still ok to use the 2.7pf capacitors for C33 and Scott =
replied:-

"You are absolutely correct regarding K2 RF C33 in that it ought to be =
2.2pF
rather than 2.7pF.  Just the small change of 0.5pF is significant and
contributes or allows the bandpass curve to be smoother.  I'm sending =
you a
2.2pF cap today.  Please do not use 2.7pF at C33 but do use 2.7pF at =
C22."

If you are using the Manual Rev D Oct 22, 2002 then the latest errata =
sheet
is Rev D-4 Dec 2,2002.  Item 9 refers to C33
If you are using Manual Rev E Feb 16 2003 then C33 already shows as =
2.2pf on
page 62.

Suggest you send an email to Elecraft who will probably send you a
replacement 2.2pf Cap.

Regards

Nigel
-----------------
Nigel Hayton
ZL2DF
New Plymouth
New Zealand
zl2df@nzart.org.nz
=20