30m QRSS Spectrograms - Page 5
Scroll Left to Right to view a 3.75 hour period
Notes:
- 04:35 - early morning, some bands of interference/noise show up - greyline propagation? Solar effects? Industrial plant equipment? Other transmissions keying up?
- 05:00 - 2015khz - looks like weak DFCW - probably lies just outside of the 100hz QRSS band.
- 05:50 onwards - wavy patterns almost certainly denote sunrise occurring and a change in the ionosphere's shape causing selective frequency fading due to multipath.
