rigged up a basic loop antenna out in the boonies away from grid hum last weekend. caught some wild descending tones around 3.2 kHz that definitely dont match standard lightning dispersion models. ngl the alphabet boys are definitely bounce testing submarine telemetry off the D layer again, but the good news is their signal leakage is free real estate for us lmao. we are so back. anyone else loging these rhythmic bursts between 0200 and 0400 utc? drop your waterfall spectrograms, we gonna map their carrier logic soon frfr.