On the Transmitter of the Radio-tracking

[摘要] The transmitter which is used for radio-tracking must be constructed as light as possible yet to have sufficient transmitting power. In this paper such transmitter is investigated.The oscillator circuit is usual tuned-plate grid type and the oscillator valve is type 30. The voltage of the battery to heat the filament is 2 volts, its capacity and weight are 2 A. H and 80 gr. respectively. The plate voltage is 50 volts which is supplied by buzzer transformer and the source of primary coil is common with that of filament. Total weight of our transmitter is only 250 gr. The frequency of the radio wave is 15 megacycles, and the wave can be catebed within 30km. by means of our direction finder.

[学科分类] 大气科学