We did Morse code and Phonetics, we also looked at various countries call signs, how radio's worked an some Q-Codes. Laptop was used to allow the Scouts to listen via WEBSDR to various stations and log their 25 contacts.
Simple Morse code buzzer made from a micro switch, buzzer and battery, cased in tobacco tin.
Parts available from Maplins and per typical Hams M6FLT and M0JFP built them on a Pub Table the night before.
