A new type of radio phasemeter with non-moving antennas for RB reception

A new type of radio phasemeter has been reported for receiving RB from geostationary satellites. It uses two fixed Yagi antennas but a single receiving system consisting of a VHF converter and a communication receiver. The planes of the two antennas are kept at a small angle with each other. The antennas are switched alternately to the inputs of the VHF converter while the outputs from the communication receiver are switched synchronously to the two inputs of a differential amplifier whose inputs have high time constants. The output of the differential amplifier is recorded in a chart recorder to get the phase information of the plane polarized RB received, as saw-tooth waves. Non-moving antennas and a greatly simplified circuit are the merits of this phasemeter over the conventional ones.