IC275x01.txt    Fixes for IC amplifier oscillation,prevent PLL unlock at
                high ambient temperatures, improve voice synthesizer &
                side tone audio, prevent PLL unlock at 174 Mhz, improve 
                the stability fo the center meter, speaker noise during
                transmit, CPU noise and eliminate spurious emission when
                thermal switch has turned on during transmit.

IC275x02.txt    PSK Transmit audio mods for Icom IC275 & IC271.
                (part 1 of 3)

IC275x03.txt    PSK Transmit audio mods for Icom IC275 & IC271.
                (part 2 of 3)

IC275x04.txt    PSK Transmit audio mods for Icom IC275 & IC271.
                (part 3 of 3)

IC275x05.txt    Cable connections for 1200 and 9600 baud packet.

IC275x06.txt    Additional information on 9600 baud for the IC-275.