PSK31
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PSK31 or "Phase Shift Keying, 31 Baud", also BPSK31 and QPSK31, is a popular computer-sound card-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-t
A waterfall display depicting several PSK31 transmissions at around 14.07 MHz. The green lines indicate a station that is transmitting.
Frequency spectrum of an ideal non-splattering PSK31 signal
Radioteletype
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Radioteletype is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link. Radioteletype evolv
PSK31
…PSK31 or "Phase Shift Keying, 31 Baud", also BPSK31 and QPSK31, is a popular computer-sound card-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-to-keyboard chat, most often using frequencies in the high frequency…
Tuning indicator on cathode ray tube
Punched tape of the type used with teleprinters in a Creed model 6S/2 5-hole paper tape reader
Electronic RTTY terminal, c. 1980