HFU HF Underground

Loggings => VHF/UHF Logs, including satellites and radiosondes => Topic started by: Jason on October 30, 2018, 1611 UTC

Title: Sound ID / fasted paced chirps + high pitch chirping
Post by: Jason on October 30, 2018, 1611 UTC

What type of transmission are these sounds ?
I've ruled out radar's already.