Tom Hanks' new convoy war movie: Greyhound

[DJS4000]

Originally Posted by Levyathan89

Did u-boats even have the technology to "call" other ships like they do in that movie? Because normally, sending sending radio messages meant sending mesages in morse code as far as I know.

good question. i had to dig through my stuff to verify it, but yes! you are correct. type vii boats used a Telefunken S 406 S/36 transmitter (plus a low powered Lorenz 40K39d as a backup) which could only transmit in the so called "A1" and "A2" modes - which is morse code. no voice.


IIRC voice comms were only possible from the type XXI onwards.