My K2 and KPA100/KAT100 have served me for over 10 years now without any 
problem!

After that I made the frequency calibration of K2 I made a mistake when I put 
contact from KIO2 and KAT2 to Control board. I put the Contact one unit up, pin 
3 from KIO2/KAT2 come on pin1 on P4. 

When I put all together and test, KPA100/KAT100 (both in same EC2) don’t 
respond. 

Using Ant ½ I got answer ”PA ANT 1” also when I use menuitem ”ATU” I got the 
same answer ”PA ANT 1”
I hear a relay click in KPA100 when I switch on the radio.

Testing single K2/KIO2/KAT2 all work well.

Testing K2/KPA100 got 20 W with 1 – 10 W on powerbutton and full power on over 
10 W.
Can’t change power with the powerbutton.

Perhaps U6 on Control Board is out of order! I measure all pin and got som 
differens against value in the manual.

Pin     My U6   U6

  6     0.0     4.7
10      0.0     5.0
13      0.7     2.3
18      5.0     0.0
25      5.0     0.0
33      0.08    5.0
36      4.6     0.8
39      1.02    0.2

Hope I manage to explain the problem!

73 de SM6FPG /Bo



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