But not alone. Not unguarded. The upper half of the building carried a monstrous parabolic reflector, mounted on gimbals. The signal was focused into a beam. The beam was made of two components. The center component was a circularly polarized, ultra-high frequency wave of five centimeter waves, modulated with the keying signals of the teletype coupling machine. The outer component was a radially polarized wave of one centimeter waves. A radio frequency armor. It was hurled at the sky, a concentric wave, out of a reflector, by a thousand kilowatt transmitter. The wave seared against the Venusian Heaviside Layer. The outer component bored at the ionization. It chewed and it bit. It fought and it struggled. It destroyed ionization by electronically shorting the ionization. And, as is the case with strife, it lost heavily in the encounter. The beam was resisted fiercely. Infiltrations of ionization tore at the central component, stripping and trying to beat it down. But man triumphed over nature! The megawatt of energy that came in a tight beam from the building at Northern Landing emerged from the Heaviside Layer as a weak, piffling signal. It wavered and it crackled. It wanted desperately to lie down and sleep. Its directional qualities were impaired, and it wabbled badly. It arrived at the relay station tired and worn. One million watts of ultra-high frequency energy at the start, it was measurable in microvolts when it reached the relay station, only five hundred miles above the city of Northern Landing. The signal, as weak and as wabbly as it was, was taken in by eager receptors. It was amplified. It was dehashed, de-staticked, and deloused. And once again, one hundred decibels stronger and infinitely cleaner, the signal was hurled out on a tight beam from a gigantic parabolic reflector. Across sixty-seven million miles of space went the signal. Across the orbit of Venus it went in a vast chord. It arrived at the Venus Equilateral Station with less trouble than the original transmission through the Heaviside Layer. The signal was amplified and demodulated. It went into a decoupler machine where the messages were sorted mechanically and sent, each to the proper channel, into other coupler machines. Beams from Venus Equilateral were directed at Mars and at Terra. The Terra beam ended at Luna. Here it again was placed in the two-component beam and from Luna it punched down at Terra's Layer. It emerged into the atmosphere of Terra, as weak and as tired as it had been when it had come out of the Venus Layer. It entered a station in the Bahamas, was stripped of the interference, and put upon the land beams. It entered decoupling machines that sorted the messages as to destination. These various beams spread out across the face of Terra, the one carrying Korvus' message finally coming into a station at Ten Mile Road and Woodward. From this station at the outskirts of Detroit, it went upon land wires downtown to the International Hotel.