This item was donated by Leading Aircraftman Gregory Frederick Mead (A316860) who was with the Royal Australian Air Force and served in Vietnam with Base Support Flight from May 1968 to September 1968 and No. 1 Operational Support Unit from September 1968 to May 1969Metal, plastic, pale blue paint, black and silver knobs, On/Off switch, morse key. Sticky taped on white paper reads Morse Code Trainer.NS No. 5805-99-580-8558 Key telegraph F.I.L.71 Ser.No 2353signals, trainer, morse code, leading aircraftman gregory frederick mead, a316860, royal australian air force, raaf, base support flight, no. 1 operational support unit