Police helicopter emission

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Police helicopter emission
Police 398M.png
Frequencies 398 MHz
Frequency Range 398 MHz - 398 MHz
Mode RAW
Modulation 16QAM
ACF 20ms
Bandwidth 20 kHz
Location Victoria, Australia
Short Description Unknown transmission that originates from Victoria Police Airwing helicopters.
I/Q Raw Recording
Audio Sample

Demodulated with AMAmplitude Modulation

The original sample was recorded in Australia, but the same signal was also present on Belgian police helicopters. In Belgium, this signal was present on the open 446 MHzMegaHertz (MHz) 10^6 Hz band, rather than the police UHFUltra High Frequency (300-3000 MHz) band.

Additional Images[edit]