Hope this helps.
'The Space Probe Affair'.
The late John Macvey drew our attention to Prof. Ron Bracewell's suggestion that a probe from another civilisation had tried to contact Earth in the 1920's. I produced a 'translation' of the 1920's signals, suggesting that the probe had come from the star Epsilon Bootis, about 13,000 years ago. The paper was published by the British Interplanetary Society and caused a considerable stir in the early 1970's: a more popular version was published in Analog, a more detailed one in "Man and the Stars", and later papers appeared in the Journal of the Society of Electronic and Radio Technicians, and as a guest chapter in "Extraterrestrial Encounter". Out of ASTRA's share of the "Man and the Stars' proceeds a satellite tracking station was built to search for the probe, but a series of major setbacks, including vandalism and hurricane damage, prevented us from commissioning it. In the end most of the 'Epsilon Bootis' translation had to be discarded, but recently it's beginning to seem that there may be something to it after all. A further article 'Epsilon Bootis revisited' appeared in the March 1998 issue of Analog.