This has since been confirmed by russian sources ; the transmitter consists of two swept - frequency generators of sinusoidal voltage and two parallel horizontal grounded antennas , each about 60 km long 這一點被來自俄方的消息所證實;發(fā)射機有兩個掃頻發(fā)生器,產(chǎn)生正弦波,同時有兩幅相互平行的水平地面天線,每個天線有60千米長。