John Gerstner wrote:
On my Kenwood TS-520 when I set the meter to the IP position, the mode
switch to Tune, I do not get any plate reading. The only way I can get the
radio working is go to the CW mode and adjust the plate and load controls
for max rf. Are the tubes going soft or do I have other problems?

And how much rf is max rf?

If you are getting 100W with no plate current indicated on the meters, then
you have a problem. If you are getting 10W maximum, with no plate current on the
meters, you need new tubes.

-Chuck