John, I know this is thread creep and does not help in your original request, but no I don't recall the 747 crew you mention. I was in New Hebrides/Vanuatu
from 79 to 84 as an Atco. My connection with teleprinters was somewhat peripheral, mostly they were were in a room downstairs or next door although we were plagued with them in the towers of Highland and Island airfields in UK until about 10 years ago when computers took over. Certainly the keyboard and paper roll format you describe sounds like the Creed machines used in UK and also the French (Thomson I think) machines supplied in the condominium. They were rather more substantial though being steel framed not aluminium