Differential signaling is a method for electrically transmitting information using two complementary signals. Skywave signals can be detected at distances exceeding from the transmitting antenna. This contained 6,888 antenna elements separated in transmitting and receiving phased arrays. The fuselage of the aircraft provided a shield between the transmitting and receiving antennas. Separate horn antennas were used for transmitting and receiving. All radio (and microwave) antennas used for transmitting or receiving are intrinsically polarized. Yagi antennas were adopted for both transmitting and receiving. The amount of power passing through any sphere centered on the transmitting antenna is equal. AM was the earliest modulation method used for transmitting audio in radio broadcasting. Frames are received by all devices, including by the transmitting device. This is caused by the phase output of the transmitting beacon. The time spent transmitting data includes data and acknowledgements. This makes them inefficient as transmitting antennas. Confusion often arises over the amount of channel separation required between transmitting devices. Plasma also circulates hormones transmitting their messages to various tissues.