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Modification for Icom 02at #2
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IC02AT.2
BAND EXPANSION MODIFICATION FOR IC-02AT
FOR SERIAL NUMBERS ABOVE 34000
BY LTC STEVE PETERS, CAP
------------------------------------------------------------------------
1. Remove back from radio (5 screws) and bottom plate (4 screws).
2. Carefully remove radio chassis from front case by pulling out top of
radio and lifting slightly (to remove battery contacts from bottom
case). Be extremely careful of ribbon cable and heat sink compound
on power amplifier module.
3. Remove diode D2 from matrix board.
4. Add diode D4 (any small diode 1N4148; 1SS211).
5. The following is a schematic of the matrix board:
ADD D4 REMOVE D2
I--+ --+-- --+-- +
V D4 ID3 I ID2 I D1
I I I I I
+ + +---+ +---+ + +
6. Install radio chassis back into front cover. Leave back off temporarily.
CONTINUED IN FILE IC02AT.10
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