Heard back from the service department that the radio tested fine. Turned out that it’s the aircraft having issues.

Ive heard there have been problem with using the radio together with external intercom. That there would be needed to relays to get it work. What do you have to say about that?

Should have read the reviews! I purchased the radio for my new Just Aircraft Highlander. Installed it, but found constant static on all frequencies above 120 -123 Mhz. Nothing I could do to correct it. Numerous calls with Icom who always seemed to point to somebody else causing the static... not their radio. Sent the unit back to Washington on my dime.. they basically said they adjusted the squelch, but it was never an issue. I works now.. but the squelch had to be up in the high range (8 or 9) to be quite in the 123 mhz range. I did NOT like the support they provided. At least the radios squelch is working now. Think hard before purchasing.

Very sensitive to high temperature, if you switch off it in warm day you will not start it in 20-30 minutes, left without comunication several times

We had an ICOM 210. The circuit-board failed and could not be prepared. So we bought the 220, and had an avionics tech install it. Result: terrible. Big Squelchy Interference all the time. (And the volume knob did not work no matter how many times we unlocked it in the menu.) We went through both menus, made phone calls to ICOM, replaced some unshielded wiring. Nil fix. So we sent it back to ICOM in BC, and they detuned its sensitivity. They said they also found a fault in the circuit board. Returned, installed, and weve had one flight in it -- worked perfectly. Im giving it 2 stars instead on 1 because of the good service, although with covid this whole process took almost 2 years.

Found the 220 to be a great radio when I first installed it. Very easy to use. But once the temperatures here in Canada started getting colder in the fall mornings my 220 wouldn’t transmit until it warmed up by operation, normally about 15-20 min of wait time before I could Tx. Would RX just fine. Sent back for warranty work and will submit a feedback on that later

We removed a defunct ATC 200 and installed this 220 in a 1999 RV6a, hiring an avionics tech. Result: poor. This radio is much too sensitive. We are getting blasted for the first :20 mins of the flight with static and squelch. Weve been through the menus exhaustively -- nil fix. The flap motor sets it off. Sometimes the strobe light, or the fuel pump. Its always on a hair trigger. So were sending it back to the Rep in BC to have it de-sensitized. Shouldve bought an MGL.

5 months after my avionics shop installed this radio, it left my 172 without primary comm. while in a pattern above a busy airport. The icom warranty department has not been helpful. I have instructed my shop to install a Garmin( I hate spending good money after bad)