[Elecraft] CW/SSB K2 Filter Flexibility

[Linden, Mike (BRC-Hes)]

  I've recently joined the list because I'm planning on purchasing a pretty
much loaded K2 around the end of the year (my K2 "account" should be fully
funded by then). After reading MANY reviews on the K2, both by magazines and
individuals, I'm absolutely positive that this is the radio for me.

  I'm essentially looking for an overview of the configuration possibilities
for filtering on a CW/SSB K2. Table 8-1 on page 86 of the K2 manual rev E
shows that each CW filter can provide unique CW and SSB configurations. This
looks great.

  But, it appears the situation changes when one adds the SSB adapter (which
I plan to do). Table 3 on page 20 of the KSB2 manual rev C shows a similar
table for a K2 with the SSB adapter. I assume OP1 refers to the 7-pole
fixed-width crystal filter that is on the SSB adapter that has a width of
2.2kHz?

  Given the above and the suggested arrangement in table 3, it appears that
FL1 will provide 2.2kHz for both CW and SSB and FL2 will also provide 2.2kHz
for SSB. Would it be possible to use the CW filter for SSB's FL2 instead of
OP1 in order to obtain a 2.0kHz bandwidth for the SSB FL2 setting? If so,
since this isn't the suggested filter setting, I assume there must be some
sort of downside to such a configuration?

  Thanks, Michael N9BDF


PS  The "Amateur Radio Emergency Communications Consistency Act" (HR 1417)
and the "Amateur Radio Spectrum Protection Act" (HR 713 & S. 537) have been
reintroduced in Congress. Please contact your Congressmen to ask for their
support of these bills! See the following ARRL link for details:
http://www.arrl.org/govrelations/