Water plant telemetry

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Water plant telemetry
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Frequencies 440 MHz,460 MHz
Frequency Range 440 MHz - 460 MHz
Mode FM
Modulation ?
ACF
Bandwidth 12 Hz,5 kHz
Location Hungary
Short Description

It is received all over Hungary, on many frequencies in the given range. Some of them are simplex, some half-duplex.

It's telemetry from water plants/pumps/etc. They are working with 10 or 10+ element yagi antennas.
I/Q Raw Recording
Audio Sample

Water stuff telemetry signal[edit]

It is received all over Hungary, on many frequencies in the given range. Some of them are simplex, some half-duplex. It's telemetry from water plants/pumps/etc. They are working with 10 or 10+ element yagi antennas. I would like to get some help on decoding this signals. What are your ideas for the modulation? Thanks.

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