Hi George,
You should not need a keying buffer, as the PW1 keying line is low-level.
The negative-going ALC fix must be installed in your K3, and the ALC
adjusted to level the PW1 output at 1 kW per the PW1 user manual.
Do not attempt to operate the PW1 without ALC, as otherwise severe damage to
the PW1 could result.
Cheers for now, 73,
Adam VA7OJ/AB4OJ
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