[Elecraft] K2 meter alignment issue
VE3WDM
ve3wdm at hotmail.com
Sat Jun 1 09:20:13 EDT 2013
Good morning Don, I check the voltages on my K2 last night and here are the
results.
I set my
AGC back to 3.746 from the 3.80 this way I could compare your results to
mine.
With RF gain set to clockwise or full. My voltage readings are to the right
of yours.
U2 pin 5 -- 3.74 volts 3.05 volts
U2 pin 6 -- 3.74 3.06
U2 pin 7 -- 3.73 3.05
U2 pin 8 -- 8.34 8.05 (note I measured 8 volt regular and it was
8.05v)
U2 pin 1 -- 3.74 2.59
U2 pin 2 -- 3.44 2.59
U2 pin 3 -- 3.42 2.58
U2 pin 4 -- 0.00 0.00
Q12 base -- 3.68 2.85
Emitter ----- 3.42 2.58
Collector -- 8.22 8.03
Then with the RF Gain set to full Counterclockwise:
U2 pin 5 -- 4.77 volts 3.74 volts
U2 pin 6 -- 4.77 3.74
U2 pin 7 -- 4.76 3.74
U2 pin 8 -- 8.34 8.04
U2 pin 1 -- 4.30 3.26
U2 pin 2 -- 4.30 3.26
U2 pin 3 -- 4.30 3.25
U2 pin 4 -- 0.00 0.00
Q12 base -- 4.58 3.53
Emitter ----- 4.29 3.53
Collector -- 8.22 8.03
These are the voltage results and I did remove the control board from the
front panel board and examined P1 and J6. I have to give the connector on
the front panel a look at but the knobs have to come off so I can get a good
look at the board.
I hope these readings my help you out with further narrowing it down.
Thanks very much Don for spending all this time on the issue.
Mike
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