That's probably a modulator-demodulator, still plugged in? But this interests me, the Yanks did this to you? Engineering this perfectly usable job title? Or the British Empire could not help itself and did end up one word short?
Comes as a surprise as for instance the Dutch language classifies a telephone engineer as "telefoonmonteur" and reserves "ingenieur" for the coveted bridge building professionals.
David was recounting how his engineering career came about a while ago and to me it did sound like a very natural progression into what he is pursuing now, even if it did extend to working as a mechanical engineer in a glass factory and partaking in rescue missions at sea.