Modifications for the ICOM - RogerK

19-07-1998(IC-3220) ICOM IC-3220A/H Frequency expansionTo extend the receiver range on VHF:118.000mhz (AM) to 174.000mhz (FM)Cut D6 on the LOGIC board (located on the front of the radio)To extend the receiver range on UHF:400.000mhz to 479.000mhzCut D4 on the LOGIC board.To extend transmitter range on VHF:136.000mhz to 174.000Solder a bridge between the solder pads next to D9To extend transmitter range on UHF:400.000mhz to 479.000mhzInstall 1SS190 (diode) at D9 position on the LOGIC board.This modification is read 799 times.top of page19-07-1998(IC-3220) ICOM IC-3220A/H mini repeater function1. Set rig to "DUAL" by using the BAND switch.2. Set frequencies in VHF and UHF. You may set in offset on either band. You may also set it up in VFO or MEMORY.3. Simultaneously hold BAND and SET key. The memory number will display a flashing "L". It will be in repeater modeTo disable repeater mode, depress and hold "SET" key until the flashing "L" goes to a memory number or VFO mode.The repeater mode will not be disabled by turning the rig off and on.This modification is read 897 times.top of page19-07-1998(IC-3230) ICOM IC-3230 Mods for 9k6by IK2XYU/KF6EEZHi to all,here you have a step to step way to modify your IC3230 to enhance it with frequency coverage,transponder function and 9k6Baud packet use.Is not easy make changes inside this tranceiver, so if you've not skill ask to another ham to help you !!!A good range of the frequencies are 120 - 175 MHz and 400 - 500 Mhz and 850 - 950 Mhz. Your RIG can surely handle morefrequency but not with a big success on sensibility.If you make this, you'll be the responsible of your RIG.Make it just if your law permit this to you !!!1. Take off the screws of the two covers (6+6) and remove them unplugging the speaker plug.2. Take off the 4 screws of the front panel (2 for each side) and be careful removing it because you have a couple of flatcables.3. Open the diodes,with a cutter, located under the front panel.They look as 1N4148 kind and you cannot make mistakes. More cuts it's meaning more new function, so you must cut allthe available diodes.The diodes are located on the board called LOGIC UNIT.4. Replace the front panel with the four screws. Connect a shield-cable (RG-58) on the small coaxial plug on the MAIN-B boardand make this cable able to go outside of your RIG when you replace the two covers. To do this you can remove the smallcover in the back of the RTX, the one just above the original antenna cable.This new coax-cable will be to apply the 900 MHz antenna.If you're not interested to listen to this band, you have just to replace the front panel and jump to point 5.5. Plug in the speaker and replace the covers.If you like to make the 9k6 mod jump to point 6.