[Elecraft] Fw: k2

[Don Wilhelm]

Scott,

You might want to check the diodes in the KAT100 wattmeter as well.  If 
they are damaged, it will behave as you describe.

Those wattmeter diodes can be damaged by static discharges coming in on 
the antenna feedline.  Disconnect the antennas when not in use.  An easy 
way to do that is to use an antenna switch - set it to connect the rig 
to a dummy load when you leave the shack.

73,
Don W3FPR

Scott McBain wrote:
> You're a genius.  I replaced the diodes and the K2 is now working correctly.  I had to use a NTE part that was compatible.  I used the NTE583, but I think I'll need to recalibrate, because when I set it to 5 watts and turn it to tune mode the manual tuner says its 10W, and when I set the power to 20 watts, the manual tuner say its 45 watts.
>  
> I hooked it up to my KAT100 Autotuner, and it doesn't seem to be working correctly.  When I put it in tune mode, I can hear all the relays popping, and when it stops, it always says its 1:1.  I also do not see all the leds light up showing the SWR like it use to.  The only leds that light up are the Antenna, and Power Range lights.  I set it to daylight, and dark modes and the lights for Antenna and Power Range brighten and dim like they should.  They also seem to function correctly, when I change antenna, the light follows the setting.  The Power Range also seems to function correctly, as when the power is set below 10 W the low one is on, and above 10W the high one comes on.  I'm not sure if the K2 is not measuring the SWR correctly or if the ATU is not communicating it correctly back to the K2.  What are your thoughts?
>   
>