Icom IC-281H (IC 281 H IC281H) transceiver mods reviews software and diagrams

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Icom IC-281H (IC 281 H IC281H)

IC-281H

Programming interface schematics for Icom:
Programming software for Icom IC-281H (IC 281 H IC281H) :
PDF User Manual for Icom IC-281H (IC 281 H IC281H) :
PDF Service Manual with schematics for Icom IC-281H (IC 281 H IC281H) :

Mods for Icom IC-281H (IC 281 H IC281H) :
    Icom IC-281H (IC 281 H IC281H) Crossband repeat
    Icom IC-281H (IC 281 H IC281H) Extended Receive
    Icom IC-281H (IC 281 H IC281H) Extended Transmit

Icom IC-281H (IC 281 H IC281H) technical specifications : Icom IC-281H (IC 281 H IC281H) technical specifications

Icom IC-281H (IC 281 H IC281H) Crossband repeat

To enable crossband repeat press and hold the BAND key and the SET key for about a second, a flashing L will appear in the lower right. To turn off hold the SET key.
Unfortunately code squelch does not seem to work when crossband repeat is enabled. Don't know about tone squelch.

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