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-
- Undocumented features of the IC-24AT - (from ICOM)
- ==================================================
-
- The IC-24AT dual band hand-held has three additional features which are not
- described in the owner's manual. They have been left out of the manual
- because some countries restrict the use of the radio in these modes.
-
- AM aircraft receive plus 740 TO 960MHz receive:
-
- Remove D13 from the main logic board (this diode may already be removed by
- ICOM in some units). D13 is on the main logic board and is a discrete diode
- (one of two in the radio) near the centre of the board. It is the leftmost
- discrete diode of the two on the board, when the radio is held open and the
- controls are positioned away from you.
-
- Whilst simultaneously holding the "LIGHT", "B" and "=" keys depressed, turn
- the power on.
-
- It should be noted that the radio will not meet specifications on the
- out-of-band receive frequencies which are enabled with this modification.
-
- Direct keyboard entry of 100MHz frequency:
-
- Turn power on whilst simultaneously holding the "LIGHT" and "3" keys
- depressed.
-
- Cross-band repeat (simplex):
-
- Remove D14 from the main logic board (the diode may already have been removed
- by ICOM in some units). The diode is a discrete component to the right of D13
- (see above), and directly adjacent to it.
-
- Hold "FUNCT" depressed and press "C".
-
- To turn ON cross-band repeat:
- Hold "FUNCT" depressed, press "5" then press "D".
-
- To turn OFF cross-band repeat:
- Simultaneously depress "FUNCT" and "D".
-
- G4ZLY @ GB7ZZZ
-