Full title reads: "French Navy Enforces The Blockade".
VS of French Naval destroyers and small patrol boat at sea. Shots of French sailors as they look out for ships.
VS taken from a French patrol boat as it comes alongside a neutral cargo ship. The French seamen order...
Shots of an old fashioned Radio and crystal wireless set.
A fisherman listens to the radio through headphones whilst he is sat on the beach mending his nets.
Scientists test the latest radio speaker in an echo free chamber, London.
Footage of wireless mast in Italy, officials tour control room.
Footage of radio operator.
Front view of a wireless.
Shots of a modern wireless set taken for 'The Peaceful Years'.
Single shot of old wireless on kitchen table from "Time to Remember".