The following is a simple modification for the TM-221 rig:

   1- Locate the control unit board (X53-3040-XX)
     located behind the front panel.

   2- Right below the channel select rotary switch and opposite the M.IN
     Sw. you will find R24 and R25.(foil side)

   3- Remove R25 for 142.00 thru 151.995 Mhz RX TX

   4- Move R25 to space for R24 for 138.00 thru 154.000 Mhz TX RX
     (Range will vary slightly from set to set)

   Info provided by N2EYR @ WA2SNA-1 / Eddy Salvador

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