Subject: Icom IC-Delta1A Mod 


Remove diode D14
Replace diode D13 with MA132HK
Replace diode D15 with a MA132WK



IC-Delta1A Logic Unit:


/---------|
|         \___________________________
|                           D D D D D | <-Matrix D14 D13 D15 Q21 Q22
|                             D D D R |              D11 D12 D10 R78 R79 
|                                     |
|                                     |
|                                     |
\_____________________________________/
                          ____ 
  Replacement of D13 -   =|  |       MA132HK
                          | /|=k
                        a=|/_|
                          
  Replacement of D15 -    ____       MA132WK
                        a=|\ |
                          | >|=k
                        a=|/_|

  1N916 or 1N914 can be used too.
  Reset The Radio When Finished     

---
 Tidhar Teucher - 4Z5CA
 Td@Tx.Techion.Ac.Il  
 4Z5CA@Haifa.ampr.org