What is the emission designator for PSK?
This is actually a topic that is somewhat controversial. The bandwidth (the first four characters, 60H0) is not in question, but the last three characters are. Some folks (including the ARRL) believe that it should be based on SSB modulation and define the first character as J. This ignores the fact that all RTTY signals (which are fundamentally frequency-shift keying) are classified as F (frequency-shift) even when created as audio FSK. Others only look at the name (phase shift) and define it as a G, ignoring the amplitude modulation (which does depend on the data, as only phase transitions create the amplitude reduction). Some (especially those looking at it as SSB) view the audio signal as a subcarrier, and use a 2 as the second character. Some view the bit stream as data, and put a D in the third place. My opinion is that the emission designator should be defined by the signal itself, not the hardware implementation that creates it. Therefore, I come up with D1B. – D means that bot
