FW: [Elecraft] K3 and StepIR/Icom PW-1

[Greg - N4CC]

I'm using the K3 with a PW-1 and the beauty of it is you don't need 
the ALC if you use the K3's capacity to store the power level (drive 
level) for each band.  Obviously if you use the K3 barefoot at 100 
watts you would have to be careful to turn it back down with the amp 
but I just leave it at the saved settings that I have established for 
output for each band.  The proper drive level does vary somewhat by 
band.  You are right about the ALC ..the K3 ALC is not compatible 
with the PW-1 and you should not connect the ALC line between the 
two.  73 de Greg

At 09:08 PM 9/7/2008, you wrote:
>  Hi Tom,
>
>The K3 should not be used as an exciter for the PW1 unless the polarity of
>its external ALC input has been changed from positive-going (original) to
>negative-going (range 0 to -4V). Failure to heed this warning will result in
>extensive damage to the PW1, necessitating costly repairs (as much as
>$1800!)
>
>http://www.ab4oj.com/icom/main.html#alc
>
>Cheers for now, 73,
>Adam VA7OJ/AB4OJ
>
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