Programming interface schematics for Icom:
Programming software for Icom IC-T90 (IC T90 ICT90) :
PDF User Manual for Icom IC-T90 (IC T90 ICT90) :
PDF Service Manual with schematics for Icom IC-T90 (IC T90 ICT90) :
To mod the T90 for full coverage TX from 45MHz to 240 and 300 to 584MHz, remove batt and peal plastic cover of and remove all diodes (the ones with the cups drawn around then poof there you have it clandestine tx with dcs ctcs.