2016A.1
PARTS: 2 small diodes, not at all critical; 1N1004s are fine
       1 small junk-box capacitor, .01 to .1, maybe tant or
           electrolytic
       abt 6" of hookup wire

PROC: -Cut the wire that goes from P24 on the main board to P9 on the
       synthesizer board and install a diode in the wire, with the
       cathode towards the synthesizer.
      -Connect the cathode lead of the second diode to the cathode of
       the first.
      -Connect the anode lead of the second diode, via the hookup
       wire, to P39 on the main board. (You can tap into the
       white/orange wire that goes from P39 to the display board. You
       guessed it -- this is the lead that drives the XMT LED.)
      -To the same junction, connect the + lead of the cap; connect
       the - lead to a good ground on the synth board.  Your choice of
       grounds, but the emitter of Q12 is OK, as is almost any other
       reasonable shield, metal, or board screw.  (If you couldn't
       find a ground, would you be a ham?)
      -Of course, all the standard good techniques (power off, good
       insulation, appropriate soldering iron and temperature, etc.)
       should be used.

Another mod that suggests itself on this radio is the replacement of
toggle switch SW6 (the red-handled WRITE switch) with a momentary.

If anyone has any questions about this proc -- or needs a copy of
2016A schematics -- contact me thus:
Allen, N2AEL@NO3M.#WPA.PA.NA.USA.
73 ES GL.