PI-RX is a beacon monitoring program capable of decoding PI4 and showing the performance of the decoded signal.

I am using it for monitoring/reporting the OZ7IGY beacon on 2 meters 144.470.200 MHZ USB (in JO55wm).

OZ7IGY sounds like this.

For PI-RX i am using my FT847 or my SDR with the PI-RX Software.

Spots can be seen in a cluster like VHFDX.EU: