ns wrote:
Recently got my Heathkit DX-40 working, and aquired a Johnson
T/R switch to get a 50 station back on the air...Two questions that
I'm hopeful one of the group will be able to help me with...# 1 the
Heath DX-40 has great output, but when loaded, and keyibng on CW, the
plate current always drops about 15 to 20 ma...snip

You might want to check the screen dropping resistor for the 6146 -
any discoloration or cracking?
Most likely, the problem will go away with a new final installed.

73,
Ed Knobloch