[Elecraft] More on #4150

[Ron D'Eau Claire]

You wrote that the K2 had started life as a much earlier version for which
the original owner obtained upgrades and a new serial number. It's clear he
didn't get all the 'upgrades' since the toroids changed during that time
too, and you received the old toroid set. 

If you find any other strange behavior, you might double check to see if all
the various changes were actually incorporated. 

It's always a challenge to take over a partially completed project. There's
a lot of truth to the signs in the old TV repair shops of yesteryear:
"Repairs! Labor $15/hour. If you've already fixed it, $50/hour." 

I've never heard of anyone getting a "new" serial number. This is an
excellent reason not to do that. It helps to know the real vintage of the
original unit just in case something like that shows up again. 

Ron AC7AC

-----Original Message-----

Quote
Excess current (<3A) being drawn on 40m tune-up.  L1 adjustment having
little effect.  All other bands tuned up just fine.  This was traced to
L25/L26 having been supplied with 16 turns each, rather than the specified
14 and 12, respectively.  Everything tuned perfectly after correcting the
number of turns.  Moral - double-check others' work as well as your own!


Don has very kindly told me that the earlier version of the K2 called for 16
turns on L25 & L26, so the commercially-made toroids were for an earlier K2
design; thanks Don.  It wasn't my intention to criticise but to emphasise
the benefits of careful checking - even commercial stuff!   Indeed, Elecraft
support this approach by encouraging builders to complete a thorough
inventory before reaching for the soldering iron.  It's time well invested.

73 DaveL  G3TJP