Interception communications
Hi folks
When two Typhoons intercepted a Latvian cargo aircraft in 2014, the Typhoon pilot began a radio transmission with "one six zero five from lima nine tango four seven..."
How does the cargo plane they're intercepting know he's 1605? From what I can find online, it was an Antonov with the registration code YL-RAA.
Also, how does the cargo plane know that L9T47 is the Typhoon? That doesn't sound like a UK military callsign.
It's nothing but idle curiosity, but where do these codes come from?
P