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TUCoPS :: Radio :: ic900_2.txt

Icom IC-900 mods




IC900.2
	Frequency Expansion Modifications for the ICOM IC-900

	All changes are made in the control head.
	Diodes are arranged in a 8x4 array: A-H, 1-4.

	As shipped from the factory, the diodes are arranged thusly:
	X = diode in place
		____________________________________
		|   | X | X |   |   |   |   | X | 4
		|---|---|---|---|---|---|---|---|---		
		|   | X |   | X |   |   |   |   | 3
		|---|---|---|---|---|---|---|---|---		
		|   | X |   |   |   | X |   | X | 2
		|---|---|---|---|---|---|---|---|---		
		|   |   |   |   |   |   |   | X | 1
		|---|---|---|---|---|---|---|---|---		
		| A | B | C | D | E | F | G | H |
	

	To add receive coverage on 6 meter and 70 cm bands only:
	C=cut diode, or remove
		____________________________________
		|   | C | X |   |   |   |   | X | 4
		|---|---|---|---|---|---|---|---|---		
		|   | X |   | C |   |   |   |   | 3
		|---|---|---|---|---|---|---|---|---		
		|   | X |   |   |   | X |   | X | 2
		|---|---|---|---|---|---|---|---|---		
		|   |   |   |   |   |   |   | X | 1
		|---|---|---|---|---|---|---|---|---		
		| A | B | C | D | E | F | G | H |
	
CONTINUED IN FILE IC900.3
  


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