Datum   : 900320/1705
Betreft : IC-xx71 FM-VOX


how to make the VOX of an IC-271,471,1271 usable for FM :

1'st type of 'main-board' :

 the only thing to be done is to add a diode such as 1n4148 or bax13 on the 
 MAIN board on the position D74
 when D74 is inserted ... the vox works in FM also.
 The diode is on the shematic diagram of the Main board but
  is not mounted on the pcb in the factory.

 73's de stefaan 
  
 16/03/1990  18.31 h


2'nd type :  (on this board a D74 is present)

 disconnect the kathode of D69 from it's old postition.
  it's new position is the kathode of D50 or D51

 name! position on main board! (old) funktion! 
 D69 ! near 'CW-DELAY'.      ! 'FM -VOX-OFF' ! FM 8V
 D50 ! near 'RF-YGR-Unit'    ! 'USB-VOX-ON'  ! USB8V
 D51 ! near 'RF-YGR-Unit'    ! 'LSB-VOX-ON'  ! LSB8V

 73's de karl