This is a computer program for Amateur Radio transmission and reception using a computer and HF radio transceiver. The program provides computer chat-mode operation on the HF bands, using a sound card technique to generate and modulate for transmission using tones at audio frequency, and receive and decode the incoming signals, also at audio frequency. An SSB transceiver translates these signals to and from the HF Amateur Bands. The DominoEX mode is a development from earlier experimental DominoF and DominoG programs, but is not compatible with them. This version (DominoEXFEC V2.0) is compatible with earlier ZL2AFP DominoEX versions, and also with MULTIPSK, with and without FEC.

DominoEX operates using a variation of the MFSK technique (MFSK = Multiple Frequency Shift Keying), since MFSK offers very good immunity to interference and ionospheric effects, and is also very sensitive. However, MFSK can be quite difficult to tune in, and suffers from some interference effects, which are usually masked by using error correction. This unique program addresses these limitations in a special way that wipes away all problems. DominoEX is easy to use, and hence ideal for beginners. You will be impressed with the performance!