To the OP, that radio has been around for a long time and a Google search is bound to turn up many resources about the radio...including places where you can find mods for the radio.
ON local unit, connect tp2003 to ground
Switch radio on
Hold SSB and AM down
Switch off
Switch on
02 OFF will appear on readout
Rotate main dial until 02 ON appears
Press AM NARROW--display will show 7.000 mhz lsb
Press MEM DOWN
Press MEM UP
Switch off radio
Remove earth at TP2003
Switch radio on