Arsenal Coaches And Players Commincate With Radio Transmitters And Under Arm Receivers

Arsenal manager George Swindin looks on as coach Ron Greenwood coaches the players by radio in the first demonstration of this system in Britain – a small earpiece is attached to a three ounce radio receiver strapped under each player’s arm, allowing the coach to broadcast instructions via a transmitter on the touch line

Arsenal coach Ron Greenwood coaches his players by radio in the first demonstration of the system in Britain. The players wear a lightweight receiver and earpiece to enable them to hear Greenwood’s promptings

The three ounce radio receiver worn by the players in the coaching by radio system, with which Arsenal have been experimenting. The receiver is attached to an earpiece which relays instructions from the coach directly to the player, and can run for up to 300 hours on a 1.5V battery