[Elecraft] Newbie requests advice

[Gary Hvizdak]

Rich wrote ...
    In particular, if anyone has experience with the rework eliminator
please reply.  I'm concerned that the test and alignment procedure may not
work as it should with these mods. 

Rob wrote ...
    I've used the Rework Eliminators, and the only trouble I've had with
testing and alignment is remembering to plug the Rework Eliminators in
first.  (You shouldn't leave them in when installing parts, because some are
easily damaged if you rest the RF board on the bench upside down.)


1)  Rob, thank you for the suggestion.  This issue came up during Beta
testing and was supposed to have been added to the instructions.  I'll
update the Companion Guide to remove the headers after phase II alignment
and test, and then reinstall them prior to phase III alignment and test.  An
updated PDF will be available on our website within the next 12 hours.

2)  Rich, to answer your question in detail, most of the mods to the K2 are
"un-done" by the un-module headers themselves.  The few that aren't are
instead "un-done" by the firmware as follows ...

C13 & C14
=========
    These two caps are part of the 160 meter bandpass filter, so they are
only "in circuit" when you are on 160 meters, and the firmware will only
attempt to operate on 160 meters when it detects the K160RX on the AUXBUS,
(i.e. when the K160RX option is installed).

C71
===
    Changing the value of this cap from 82 to 120 pF requires that you
"inform" the firmware that you have done so.  This is accomplished by
changing the Extended VFO Range (D19) secondary menu setting per the
instructions in the Companion Guide.  (The firmware in older K2s (pre-4060)
did not have this secondary menu setting, however your K2 has the latest
firmware.)

C75
===
    This cap is only "in" the synthesizer circuit when the K2 is on 160
meters.

                                --- - - - ---

    Ken is now shipping the remainder of our new "Stock K2 PCB Upgrade Parts
Kits" product line.  I'll be updating our website within the next 12 hours
to reflect our updated shipping status.

    To learn more about our accessory products and supporting documentation,
visit our website at http://home.cfl.rr.com/garyhvizdak/KI4GGX/unpcbs/

73,
Gary, KI4GGX
K2 #4067

Rework Eliminator, Rework Eliminators, and unpcbs are trademarks of Ken
Kaplan and Gary Hvizdak.  (I'll be updating our website this weekend to
include the unpcbs trademark claim on every page.)