The Battle Of The Beams
Episode: 1x01 | Airdate: Jan 5, 1977
The mysterious radio signals from Germany which could guide enemy night bombers to a pin-point target anywhere in the British Isles could have proved disastrous for the almost non-existent British defences. Professor R.V. Jones of the RAF Scientific intelligence recounts how the "Beams" were first discovered and then countered...with crucial timeliness.