Today’s Poster follows yesterday’s.
It’s a German radio company (Siemens) advertisement, so although similar looking to yesterday’s for the job of a radio operator, is in fact for a product rather than a role. It reads: “Klare verstandigung durch Siemens-bordtelefonei” or ‘clear understanding with Siemens headsets’ The words in the signal key are lärm (noise) and sprache (speech)
(The very German ‘luftfahrtgerätewerk’ is a portmanteau word for ‘aviation equipment factory’.
James Kightly, Vintage Aero Writer.