Homebrew CI-V Interface to key the ICOM-Transceiver
with only one COM-Port

It is possibility to key the Rig with CT by K1EA, TRLog by VE6TR, and some other Programs that use the RD-and TD-Line to communicate with the PC. The RTS-Line is used for switch the PTT (needed to work with digtal-mode or voice-keying).

RD and TD are used for the Remote-Control. Most of the RIG-parameters will be sending by these Lines, e.g. Mode, Band, Frequency, Memory...

The DTR-Line make it possible to key your Transceiver with CW-Signs.
CI-V for ICOM-Transceivers