OUT OF BAND RECEIVE MODS FOR THE IC-901 To modify your IC-901 for out of band receive on each of the bands remove the following diodes in the control head. 28 MHz D24 50 MHz D28 220 MHz D19 430 MHz D25 TO ENABLE CROSS BAND REPEAT Flip S1 on the logic board (located in main unit at the very front) Dial up the frequency you need on the main and sub band Turn off the IC-901 Push and hold "Check" and "Lock" Turn the power to the IC-901 on To disable the cross band repeat function depress the "Lock" button