Hello Vone Rotate
You have to be able to
identify radio navigation aids (VOR, DME, NDB, ILS) from their Morse code identifiers (JAR-FCL 1.470, Appendix 1 to JAR-FCL 1.470 and CJAA Learning Objectives Communications).
The CJAA recommends an aural test comprising groups of 3 letter codes sent at standard rates, but they say that
these procedures are not included in the JAR-FCL syllabus, however this subject is appropriate to the training required by professional pilots and may be included in future exams (CJAA Learning Objectives Communications).
From my own point of view I would like to add that learning Morse code for the purpose of identifying stations is not too difficult. Keep in mind that the speed is very low, and there is a maximum of four letters only.
Cheers
hvogt