ICOM IC-12AT

Expand Reception Range

Procedures:

1. Remove battery and antenna.
2. Remove case attach screws.
3. Remove chip diode D2.
4. Replace Diode D4 with ISS 181 diode (A3)
5. Re-assemble in reverse order.
                                   
                                  
                         REMOVE      
     ___O__    ______    ______    ______
    |D4 \  |  | D3   |  | D2   |  | D1   |
    O-----\O  |------|  |------|  |------|
           ^         ______
      DIODE^GROUND  | D8   |
                    |------|
                     ______
                    | D7   |
                    |------|
                     ______
                    | D6   |
                    |------|