At the moment, I’m hearing a whole bunch of traffic around 14.074 MHz in a digital mode that I don’t recognize. I haven’t been able to get intelligible text out of fldigi from this yet. From the amount of traffic, I wonder if this might be some sort of contest activity. Can anybody provide a hint about what this mode is?
It sounds like some sort of multi-tone frequency shift keying, with around 8 tones spaced in a bandwidth of around 50-80 Hz. It sounds somewhat musical as the different stations drop in and out, like weird etherial chords.
UPDATE: I’ve been told that this mode is FT8, which can be sent/received with the WSJT-X software. I’ll download that and give it a try.
Here is a 30 second audio recording of this traffic:
And here’s a 5 minute recording: