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TUCoPS :: Radio :: ic900_3.txt

Icom IC-900 mods




IC900.3
	440 Band - to expand coverage from 420 - 470 MHz:
	Remove diode D25 (3,D) for RX
	Install diode in (3,C) for TX
	VCO in 440 module covers a 20 MHz range - re adjust as needed.

	220 Band - to expand TX coverage from 216 - 236 MHz:
	* This mod hasn't been tried and verified. *
	Install diode (1,C) for TX
	Remove diode (2,D) - ? 

	144 MHz Band - to expand TX coverage from 138 - 174 MHz:
	Install diode in (1,C)

	50 MHz Band - to expand coverage from 40 - 54 MHz:
	Remove diode D32 (4,B) for RX
	Install diode in (4,A) for TX

	28 MHz Band - to expand coverage from 28 - 40 MHz:
	Remove diode D33 (3,B) for RX
	Install diode in (3,A) for TX
CONTINUED IN FILE IC900.4




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