[Elecraft] What value for R88 with the KN2B

[Larry Benko]

I posted a question yesterday and have received a couple of
comments and questions but no definitive reply.  I don't think
that I made the original question clear enough so I will try
again.

Specifically, Rev. E of the K2 schematic, dated Feb. 16, 2003,
says on sheet 2 of 4 in the upper right corner that if the KNB2
Noise Blanker is installed to remove R88 on the K2 RF board and
makes no mention of putting any component back in its place.

Rev. D of the Noise Blanker documentation, dated Aug. 20, 2002,
says to remove R88 on the K2 RF board and to then install a
2.7k resistor in the R88 location.  The KNB2 kit does provide
this 2.7k resistor.

Which is correct?  Do I follow the instructions for the KNB2 or
the NEWER schematic for the K2?

Apparently the original components R88, R89, R90 make up a 5dB
pad which also provides some impedance stabilization to drive the
crystal filter.  The KNB2 has a bandpass filter which appears to
do the same function perhaps at the same level or not.  The
presence of R88 would change the level to the crystal filter
slightly.

Thanks again and 73,
Larry Benko, W0QE