[Elecraft] K2 Build Question

[Margaret Leber]

tom.w3qs wrote:

> 1.  Resistance checks for U1 pins 1 & 2 are out of spec.  Chart says 25 - 35
> K for both pins.  DMM reads 17 K for both.  Old analog meter reads 8 - 9 K
> for both.
> 
> 2.  Resistance checks for J1 pin 15 is out of spec.  Chart says 10 - 60 K.
> Analog meter reads 80 K.
> 
> Perhaps the resistance chart does not take the added SSB stuff into account?
> U1 pin 1 and J1 pin 15 are both associated with this added circuitry.

I did the same build you did (well, on S/N 1641 anyway)...and noted the 
resistance check values after adding the KSB2 components using a 
Triplett 2030A DMM.

U1 pins 1 & 2 : 30Kohm
J1 pin 15: 31Kohm

So whatever the reason for what you're seeing, I don't think we can 
blame it on the KSB components being present. You might want to inspect 
things again. It's *very* easy to overlook soldering a pin or two on the 
LCD or one of the processor chips, and have things sorta almost work 
anyway because the pin's in a plated-through hole making intermittant 
contact. I did that more than once.

  73 de Maggie K3XS

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