@PE0SAT , @bali and @epsilon Funny you should ask. lol With a lot opf help from Claude AI, and several hours of work, here is where I have landed this morning. It all seems plausible, but hard to be 100% certain. YMMV
Drishti_signal_analysis.pdf (227.2 KB)
Drishti.zip (6.0 KB)
Link to IQ file used (was called D2 but renamed with rx timestamp, etc.).
Good hunting all,
Bob
N6RFM