http://www.elecraft.com/K3/k3_app_notes.htm
Approximate shipping date - Approximately April 23-24, 2008
Serial numbers 660 through 782. (As early as S/N 654 may demonstrate
this problem, but we think the problem starts with S/N 660.)
I put the front panel on last night. Should have read email first.
The front panel was a bit annoying to get on, but not as bad as the NB
standoff with the shield already installed.
Oh well, still had to install the KPA3 anyway.
Dave Wilburn
K4DGW
K2/100 - S/N 5982
K3/100 - S/N 766
"For those who fought for it, freedom has a flavor the protected will
never know."
Eric Swartz - WA6HHQ, Elecraft wrote:
I'm posting an alert with details on this by end of day today. (Both on
the web page and to the Elecraft list.) We're just finalizing the docs
right now.
This will include the serial number range and instructions on adding the
ground wire to correct it. We only became aware of this late last week
and finalized the correction and docs this week. All new production had
this corrected.
73, Eric
Gary Hembree wrote:
Fred,
The front panel ground patch has fixed all of the problems associated
with using biased element microphones that I am aware of. The
original three K3s affected were SN 690, 728 and 729. Since then
several others have complained about the same problems, although I
haven't heard if the patch worked for them.
The symptoms on my K3 were exactly the same as on yours when I used
the Elecraft Proset. Additional problems surfaced when using the
Elecraft MH2 hand mike. All of these abnormalities vanished when I
grounded (with one small wire) the two capacitors that have the
missing ground trace on the front panel board. These are bypass
capacitors by the way, not blocking. An official field repair notice
is expected soon from Elecraft.
73
Gary, N7IR
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