These unofficial ATC feeds are usually captured by volunteers or at least companies not directly affiliated with the aviation industry (similarly to services like Flightradar24), sometimes some distance away from airports, which makes ATC and aircraft on the ground really hard to hear.
What also helps a lot is that the formats of messages relayed are pretty standardized (ICAO phraseology), and knowing what phrases to listen for can help a lot.
On the other hand, it can unfortunately also cause people to hear what they are primed for – such as a landing or takeoff clearance... (Not implying that this happened here – I can't make out what's being said on the tape myself!)
These unofficial ATC feeds are usually captured by volunteers or at least companies not directly affiliated with the aviation industry (similarly to services like Flightradar24), sometimes some distance away from airports, which makes ATC and aircraft on the ground really hard to hear.
What also helps a lot is that the formats of messages relayed are pretty standardized (ICAO phraseology), and knowing what phrases to listen for can help a lot.
On the other hand, it can unfortunately also cause people to hear what they are primed for – such as a landing or takeoff clearance... (Not implying that this happened here – I can't make out what's being said on the tape myself!)