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
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