K3 and FL-7000 amp

[Ron W3ZV]

Can anyone using this combination with automatic band switching tell me
if the pull up resistor mod on the band data lines is necessary?

Ron W3ZV
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[Barry Simpson]

Hi Ron

I am using the K3/ FL7000 combo.

I did not have to put in any pull up resistors. The auto band change works
fine although wiring up the plugs was a bit tricky/ tedious - but well worth
doing.

I also did the ALC mod to the K3 and whilst it works with the FL7000 it is
rather unstable. The ALC level and hence the amplifier current continuously
varies over a small range. I did follow up Elecraft about this problem but
got a wishy washy sort of response which didn't help with the problem.

So I turned the ALC off and operate without it. It is very simple to set the
power out from the K3 to run the amplifier power you want. I usually run
mine at 400w out which is the legal limit here.

73

Barry  VK2BJ


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