Say the registration

A callsign is only learned when you can say it without stopping to think. Hold the button, read the tail number, and every letter is marked straight away. Add an aircraft to your hangar and it starts with yours.

Pronunciation is marked generously: speech recognition writes “Alpha” for Alfa and “Juliet” for Juliett however clearly you say them, and being marked wrong for the microphone’s spelling teaches nothing. The spelling that counts is on the alphabet revision card.