HF and VHF
RTTY
Baudot teleprinter text from 45.45 to 200 baud, either way up, read into the message view as it arrives.
RTTY is two tones and a five bit code, and it has outlived every prediction of its death: amateur contests, weather bulletins and a fair amount of utility traffic still use it. WaveShark reads the standard speeds and both polarities, so a reversed shift is not a dead channel.
On a radio that transmits, an over can be keyed back out, which makes the same window both sides of a contact.
What comes out
- The decoded text, live as the characters arrive
- Baud rate and shift
- Polarity, so a reversed signal is labelled rather than mangled
$ waveshark --tune 14.085 --mode usb --messagesRead next
Something did not decode?
Record the burst with --record and open an issue with the capture. A capture that decodes becomes a test fixture.
Open an issue