[Elecraft] KPA100 problems

[Carl Strode]

David,

My K2 #3777 exhibits the same problem.  It is not a "problem" in most 
cases since a change of few watts has virtually no impact at the 
receiving end.

HOWEVER, it is a real problem when I use the K2/100 to drive an amp.  I 
find it very difficult to properly tune my SB-1000 linear when the 
output from the execiter (K2) is bouncing up and down.

Properly loading the grounded grid 3-500Z amp requires it to be fully 
loaded, so a random step change in exciter output from 35 to 40 to 37 to 
42 etc. makes tuning a genuine pain.

Otherwise my KPA 100 is perfect in all respects.

Yes, it certainly would be nice to kill this bug.

Carl
WA7CS

David Clark wrote:

>   I  built a KPA100 and aligned it but I am having problems with it. When I key down and watch the output with a wattmeter the power changes up and down about 10 watts twice a second until I unkey. I have double checked all component locations and they are correct. I have emailed elecraft support and have not got much help. I have tryed realigning R26 and R27 but it made no difference. I also double checked the bias current. Ant suggestions???
>David Clark
>KD7NZK
>K2: 2778
> 
>
>
>---------------------------------
>Do you Yahoo!?
>Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
>
>--- StripMime Report -- processed MIME parts ---
>multipart/alternative
>  text/plain (text body -- kept)
>  text/html
>The reason this message is shown is because the post was in HTML
>or had an attachment.  Attachments are not allowed.  To learn how
>to post in Plain-Text go to: http://www.expita.com/nomime.html  ---
>_______________________________________________
>Elecraft mailing list: Elecraft@mailman.qth.net
>You must be subscribed to post to the list.
>To subscribe or unsubscribe see: http://mailman.qth.net/mailman/listinfo/elecraft
>Elecraft Web Page: http://www.elecraft.com
>Also see: http://www.elecraft.com/elecraft_list_guidelines.htm
>
>  
>