Observations on Sky-Wave Transmission on Frequencies above 40 Megacycles

The results of daily observations at Riverhead, L.I., N.Y., since September, 1937, of European 40- to 45-megacycle transmitters are reported. Measurements of field strength were made on English, French, and German television signals. Multipath propagation of the English video-frequency channel was observed optically and the difference in path length determined.