Remove bottom and find the diode matrix (near big chip)
Open RX 0.030-74.8Mhz (REMOVE D416)
Open TX 0.1-74.8Mhz (REMOVE D422) (D419 is and must be in) ** Only Open TX 60Mtr 5.255-5.405Mhz (REMOVE D405) 

Icom IC-7300 wide band modification
Icom IC-7300 wide band modification
Icom IC-7300 wide band modification
Icom IC-7300 wide band modification