To allowed this TRX for a VHF UHF general cover, do the following mods :

  1ø) Remove the front panel.
  2ø) Look for the first part where the Lithium battery is connect
 

  there are 8 connectors like :

  ÜÜ Ü Ü Ü Ü Ü Ü Ü Ü                        ÜÜ Ü Ü Ü Ü Ü Ü Ü Ü 
  ÛÛ Ü Ü Ü Ü Ü Ü Ü Ü   ---------->  FT-411  ÛÛ Ü Ü Û Ü Ü Ü Û Ü
     1 2 3 4 5 6 7 8                           1 2 3 4 5 6 7 8



                                            ÜÜ Ü Ü Ü Ü Ü Ü Ü Ü
                       ---------->  FT-811  ÛÛ Ü Ü Û Ü Ü Ü Ü Ü
                                               1 2 3 4 5 6 7 8


 To validate the micro controller, do next :

  For the FT-411 :  RX 120 - 174 Mhz     TX 140 - 174 Mhz

     1ø) Reset the TRX by switch on it with [MR] and [VFO] key down.
     2ø) Type  1200 [VFO]  1740 [VFO]  1400 [VFO]  1740 [VFO]
     3ø) Press the [F] and [7] keys tho change the QSY step.

  BE CARREFULL, with this few mods, the TRX looses the automatic AM detection.


  For the FT-811 :  RX 420 - 470 Mhz      TX 420 - 470 Mhz

    Do the same but step 2 is different :

     1ø) Idem
     2ø) Type 4200 [VFO]  4700 [VFO]  4200 [VFO]  4700 [VFO]
     3ø) Idem


( From MEGAHERTZ magazine, 07/94 )