Amateur radio + typical bandwidth of RTTY, PSK31, FSK

[JamesGoh]

Does anyone know what the typical bandwidth of the RTTY, PSK31 and FSK amateur radio transmission schemes are ?

 

[vk6kro]

PSK31 has a bandwidth of 31.25 Hz.
The others vary according to baud rate and frequency shift but would be much greater than PSK31.
Of the order of hundreds to thousands of Hz.

Very low shift FSK is used to achieve communication in very difficult conditions.
Shifts of 3 Hz and a speed in Morse code of one dot per 3 seconds and one dash per 10 seconds are used. These transmissions have very low bandwidths and sound just like continuous carriers to a human ear.

 

[oswaler]

I can provide an answer to this question. The typical bandwidth of RTTY (Radio Teletype) is approximately 170 Hz, while PSK31 (Phase Shift Keying) has a bandwidth of around 31 Hz. FSK (Frequency Shift Keying) on the other hand, has a variable bandwidth depending on the modulation index, but it typically ranges from 170 Hz to 1.5 kHz. These bandwidths are relatively narrow compared to other modes of amateur radio transmission, allowing for more efficient use of the radio spectrum. I hope this information is helpful.