Joe Taylor K1JT hints at next generation of digital modes

Stu 2E0XXO

John - AI4FR

tparish

Well this is something I am keen to learn about! Fascinating trend.

Stu 2E0XXO

Michael N3LI

It's the I and Q portions that will give them trouble. 

Martin AA6E

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

Lee - N2LEE

KC2QMA_John

Stu 2E0XXO

N2WQ

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

Stu 2E0XXO