[Elecraft] KAT1 Alignment (R2 Adjust)

[k4zm]

Don:

The calibration of R2 is not real critical.  It is the pot that delivers the
reflected voltage to the microprocessor.  There is a way to set it
accurately.  After properly setting R1 as per the manual:

1.    Turn the power off.
2.    Measure and record the resistance between ground and Pin 5 of U1
3.    Measure and adjust R2 so that the resistance between ground and Pin 4
of U1is the same as the valve measured in Step 2
4.    Bingo You are done.

73

Jim Younce K4ZM