DIGICOM

From: WB3JDI @ NM3G
Subject: C.A.R.S.DIGICOM BOARD MOD.
               MODIFICATIONS TO THE CARS DIGICOM BOARD
  
  FOR ALL THAT HAVE CARS DIGICOM BOARDS. THIS MODIFICATION WILL IMPROVE
  THE RECEIVE PERFORMANCE OF THE BOARD.
  REQUIRED PARTS:
  1. 18K 1/8 WATT RESISTOR  OR 75K
  1. 100K RESISTORS
  1. .0022  MYLAR DISC CAP.
  1. .047 DISC CAP.                                                             
  1. 2N3904 NPN TRANSISTOR
  3. .001  CAPS 
                                                                                
          RCV                    TOP VIEW
          ADJ
  :--------H--H--H--------------:
  :        H  H  H       FSK HH :
  :        H  H  H         0 HH :
  :        H  H  H              :
  :         R1    ========       X 1
  :                 2206         X 2
  :     ======= C1========  Z1   X 3
  :      2211                    X 4
  :     =======                  X 5
  :                              X 6
  :      0           0          :
  :     RCV  C2     PTT         :
  :                             :
  :-----------------------------:
   R1 56K             LIFT ONE END AND ADD 18K OR REPLACE WITH A 75K
   C1 .0018 OR .001   REPLACE WITH A .0022
   C2 .1              REPLACE WITH A .047
   Z1  5V ZENER DIODE   REMOVE  
continued in file digicom.2 - request from server