To adjust the power output of a Kenwood TS-50:

Kenwood Service
310-639-5300

On the TX/RX-board- VR14 adjusts the high setting, VR16 the medium, and
VR15 the low.  Adjust the High power resistor FIRST, VR14, if you need to
since it controls the overall power from which the others feed.  VR15 &
VR16 are almost directly below the speaker (on the right hand side) and
are VERY small and close together.  VR14 is larger and towards the back of
the unit, almost up against a wall and pretty much in a direct line from
the other two.  Directions are given as if looking from the front of the
rig.

MY settings:  4.5 - 5 Watts for low
              20 - 25 Watts for medium
             80 - 100 Watts for high.

Reason:  20 Watts is 6db above 5W, and 80 watts is 6 db above 20W.
         So I get 6db increase for each adjustment in power setting.

Disadvantage: The Kenwood auto tuner REQUIRES 10W min to operate, so you'll
              have to use the medium power setting to tune the rig, another
              good reason to use 20 watts?

NOTE: As I noted above the high power setting CAN be changed and if you 
      change it, it will change the medium and low power levels.  This
      comes from experience.  (My problem was that my TS-50 was putting
      out 20, 100, and 200 watts, all I needed to adjust was VR14 to fix
      all three to the correct factory values.)  I then adjusted VR15 to
      lower the low power to 5 watts, and VR16 to lower the medium power
      to 20 watts.

good-luck 72 & 73 
de KE3FL/Phil
KE3FL@juno.com