[Elecraft] K2 PA Failure

john petters tjpost at traditional-jazz.com
Wed Feb 16 15:15:25 EST 2011



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Hi Folks,
I have had another PA transistor failure in my 2003 vintage K2. The
transistors have been replaced several times over the years and the
board is now a mess.
I'm planning to rebuild the PA on an external board with a proper heat
sink mounted on the back panel of the K2. This will involve taking the
secondary from the driver transformer on a piece of coax about 6 inches
long.

My query is what impedance is the secondary of T2 designed to work into
and will I have a problem taking this to the external board?

I've never liked the design of the mechanical fitting of the K2 PA and
always regarded this as the Achilles Heel of the rig.
Suggestions appreciated.
73


-- 
John Petters
www.traditional-jazz.com
Amateur Radio Station G3YPZ


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