Strange unknown signal on 423.550 mhz

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Strange unknown signal on 423.550 mhz
Strange signal.PNG
Frequencies "mhzand423.500mhz" is not declared as a valid unit of measurement for this property.
Frequency Range 0 Hz - 0 Hz
Mode
Modulation
ACF
Bandwidth 10 kHz
Location Ukraine
Short Description Hi, i don't know what it is, on 423.375 and 423.550 mhz very strange and strong unknown signal
I/Q Raw Recording
Audio Sample

Very strange strong unknown signal on 423 mhz. Someone knows what is it? Please see the picture on the right side.

Frequencies[edit]

423.375 - 423.550 mhz