[Elecraft] Heil K2 Proset with K3

[David Wilburn]

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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