Just curiosity Can anybody identify what mode is using a signal on 3.733 (80m). I am trying to decode digital sstv on that frequency, however most of the time I hear a clicking multitone sound like Olivia sending beacons, maybe trying to establish a connection, it keeps transmitting multitones for a while, sometimes more than 2 minutes, making my decoding a mess. The beacon of the signal usually starts with several digital carriers sweeping in frequency on the waterfall, large bandwidth and when transmitting the multitones make a characteristic picture of small squares like a chess board, I don't see any pilot carriers.
Rui,CT1QK
