With a set operating rate of 100 baud, it does not effectively compete with the speed and error correction of more modern ARQ modes. It is designed with a combination of packet and Amtor Techniques. It is the most popular ARQ digital mode on amateur HF today. It incorporates a data inter-leaving system that assists in minimizing the effects of atmospheric noise and has the ability to fix garbled data. G-tor tries to perform all transmissions at 300 baud but drops to 200 baud if difficulties are encountered and finally to 100 baud.
Clover adapts to conditions by constantly monitoring the received signal.
Based on this monitoring, Clover determines the best modulation scheme to use. RTTY is a very simple technique which uses a five-bit code to represent all the letters of the alphabet, the numbers, some punctuation and some control characters. Despite it's relative disadvantages, RTTY is still popular with die-hard operators. PSK31 is the first new digital mode to find popularity on HF bands in many years. PSK31 enjoys great popularity on the HF bands today and is presently the standard for live keyboard communications.