Amplitude of very-high-frequency signals reflected from the sporadic-E layer in North-West Europe

Measurements have been made at Banbury over a period of a year of the strength of the high-level signals occasionally received from an Iceland transmitter operating on a frequency of 37 Mc/s. The results have been analysed and used to prepare curves of the estimated quasi-maximum values of field strength likely to be received over distances of 700¿2000 km in north-west Europe and for frequencies of between 30 and 70 Mc/s.