CT only provides radio control via the selected COM port. You still will need to purchase the appropriate interface hardware for your radio, including but not limited to internal options (i.e. Kenwood IF-10B), external interfaces (i.e. ICOM CT-17) and the appropriate serial port cable ("null modem").

ICOM
Japan Radio Company
Kenwood
TenTec
Yaesu

ICOM

The following ICOM radios will work with CT. Bold means the radio is directly supported by CT. If not bold, then you may need to reprogram the hex address code in your radio to match one of the radios that CT supports directly.

Japan Radio Company

CT does not support any of the JRC transceivers at this time.

Kenwood

The following ICOM radios will work with CT. Bold means the radio is directly supported by CT. If not bold, then you may need to tell CT you have a different, but supported Kenwood radio. Kenwood radios are the best supported in CT. They all use the same command set, so just about any Kenwood will work, no matter what you call it.

Brian McGinness N3OC says: The Kenwoods have an "auto information" setting (on/off) which is used to make the radio report its frequency automatically to the computer every time the VFO knob is turned (akin to the "babbling" that ICOM radios do). If this command is OFF, the radio will not report its frequency when you tune around, and therefore CT will not scroll the band map with you, but it will still respond to grabbing a spot or changing bands. This command has to be set when CT initializes the radio communication, and I note the TS-450 works as an TS-850 only after that command has been set. It seems to work better (and all the time) if you tell CT it is a TS-50.

TenTec

The following TenTec radios will work with CT:

Yaesu

The following Yaesu radios will work with CT. Bold means the radio is directly supported by CT. If not bold, then you may need to tell CT you have a different, but supported Yaesu radio.