30m QRSS Spectrograms - Page 2
Scroll Left to Right to view a 3.75 hour period
Notes:
- 15:55 - carrier at 1980hz shows up.
- 16:45 - a feint blip at 1980, and a fient blip about 7 minutes later at 1984hz.
- 17:15 - three data bursts - WOLF mode? Rising in frequencies.
- 17:55 - looks like a DFCW QSO taking place at 1852hz ... but at a faster dot rate than QRSS3. Continues in a few later frames. Timing is irregular, unlikely to be a beacon.
- 18:25 - signal ending here at ~ 1900hz centre frequency is the beginning of a beacon every 10 minutes that we'll see gets stronger. It looks to be in JASON mode (incremental frequency keying).
- 18:40 - strong signal noise, looks like it caused enough IMD in the receiver to splatter everywhere. Note that AGC was disabled.
- 18:55 - DFCW at 1916hz, faster than QRSS3.
