Transmission-loss measurements and diversity tests made on two knife-edge diffraction paths in europe

A summary of results of a programme carried out at1965 Mc/s in August1961. On each path the measured loss was less than estimated for normal beyond-the-horizon paths but more than was calculated from knife-edge diffraction theory. It is estimated that highquality 72 voice-channel systems could be established using10 KW transmitters and 60-foot diameter aerials.