[Elecraft] K2PAKIT

Don Wilhelm w3fpr at embarqmail.com
Mon Mar 29 14:03:53 EDT 2010


George,

Use the PN2222A transistors to replace Q11 and Q13 - do that even if you 
think the ones on the board are OK, those transistors control the bias 
to the base of the PA transistors, and if faulty can zap your new PA 
transistors.

The resistor is a replacement for R50 - older K2s used a 1/4 watt 
resistor at R50, and those should be replaced with the 1/2 watt resistor.
Check to see if your R50 is open - measure the resistance from the 
emitter of Q6 to ground.  If you measure more than 1.5 ohms, replace R50 
with the one provided, but if the existing R50 is good, you have a spare 
1/2 watt 1.5 ohm resistor for your parts bin.

73,
Don W3FPR

W2bpi1 at aol.com wrote:
> Received the K2PAKIT today. Besides the two output transistors  there are 
> (2) PN2222A transistors and another part that looks like a resistor  with a 
> color code: brown, green, gold, gold. What am I to do with these xtra  parts? 
>    Geo/W2BPI
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