Place the radio with the front panel toward you and bottom side / speaker side UP.

Remove the (4) screws located in each corner.
 

CAREFUL! Go slow, you will need to disconnect the speaker cable while removing the cover.
Look at the lower right hand corner of the main printed circuit board.
You should see a silver crystal with the number "D196D3C" printed on it.

Just above the crystal, you should  see an (8x8) matrix pad (see below diagram).
o o o o o o o o
o o o o o o o o
o o o o o o o-o <-- Remove
o o o o o o o-o <-- Remove

Note: there are ONLY (2) resistors in place. (Bottom right and the one directly above it).
REMOVE BOTH RESISTORS [Do NOT attempt this unless you know how to use a low wattage soldering iron
RESET THE RADIO, hold the [SET LOCK] and [S.MW-MW] buttonsdown during power-up.
DONE! New RX/TX Ranges

118.0000 - 135.9875 RX-AM only
136.0000 - 173.9875 RX & TX (15% RF power fall-off at lower freq, Full
power at high freq)
230.0000 - 399.9875 RX only
400.0000 - 478.9875 RX & TX (Do NOT transmit below 410MHz on HI-PWR,
VSWR fold-back)
479.0000 - 549.9875 RX only
810.0000 - 849.0000 RX only
849.0000 - 869.0000 RX only
894