 Goliath transmitter

Goliath transmitter was a very low frequency (VLF) transmitter for communicating with submarines, built by Nazi Germany's "Kriegsmarine" navy near Kalbe an der Milde in Saxony-Anhalt, Germany, which was in service from 1943 to 1945.It was capable of transmission power of between 100 and 1000 kW and was the most powerful transmitter of its time.