| 摘要 |
454,360. Directive wireless signalling. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. April 3, 1936, No. 9885. Convention date, April 3, 1935. Addition to 447,707. Drawings to Specification. [Class 40 (v)] The parent Specification describes a direction finding system in which signals of two different kinds, e.g. dots and dashes, from a rotating beacon having two or more overlapping beams, are counted and an indication of direction is given by subtraction. The present invention removes ambiguity in the indication, by determining from the character of the first received signal, which of a number of indicators, equal to the number of transmitter beams, gives the correct indication. |
