Joe Taylor K1JT hints at next generation of digital modes

Sounds interesting. I'll have to find that Blog. It also sounds like it'll be a very wide mode which may be the reason legacy transceivers can not handle it.

Interesting. Well, of course it's quite possible to use broad bandwidth with analog methods. It's just easier and cheaper to make radios with SDR technology now. I and Q outputs, whether analog or digital, are needed if you want to preserve phase information. E.g. separating positive and negative IF frequencies. Fortunately, Flex gives us I/Q through DAX so we're well set for wideband WWSJT or whatever. (On receive but not transmit) What's not so clear is whether there would be FCC support for >3 kHz WB modes on any bands below 450 MHz - unless you're an AM or ESSB op. 73 Martin AA6E

Joe Taylor K1JT hints at next generation of digital modes

One of the huge developments in Amateur radio over the last few years have the development of digital modes like FT8. The software (WSJT-X) for these modes uses the sound card in a PC to decode and encode these digital signals.

Up to now, this approach allows it to be used with standard superhet transceivers.
In a recent short talk at the amateur radio show in Friedrichshafen, Germany, Joe Taylor K1JT gave a hint of a new digital mode in the pipeline.

This will use the I and Q output of a SDR transceiver for receiving and sending the signals and over a wider bandwidth. This will be a major departure for the current suite as it will not be compatible with superhet transceivers.

By John, EI7GL https://ei7gl.blogspot.com/

Both the CW and RTTY skimmer servers use the IQ data, not the audio stream. So the concept by itself is no new.