Word: signalling
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Dates: during 1940-1949
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Suspicious Signals. The man most entitled to take the bow is rumpled, bashful George Sterling, 49, a native of Peaks Island, Me., who built his first radio station in 1908, assisted in organizing a U.S. Signal Corps radio intelligence section in France in 1917, joined FCC in 1935, became RID's boss...
...peacetime experience of tracking down radio-using rum runners, smugglers, gamblers, practical jokers. Their prime weapon was the Adcock Direction Finder (built and perfected by Sterling and his men), which has a long antenna on a 40-ft. tower and gives the approximate point of origin of any radio signal. RID now has 30-odd Adcocks in the U.S., Alaska, Hawaii and Puerto Rico...
...days after Pearl Harbor, RID's Portland, Ore. listening post picked up a suspicious signal, communicated it to Washington. Within six minutes, seven Adcocks throughout the country, fixed it somewhere in the District of Columbia. Next day, when the illegal transmitter came on again, RID tracked it straight to the German Embassy on Massachusetts Avenue...
...high hilltop, every day, all day long, an R.A.F. lieutenant equipped with binoculars and telephone sits on a fuel can, spotting aircraft. Two other spotters are Partisan girls roosting on the island's only snow-clad peak. When planes approach they signal by firing their rifles, and these signals are relayed in like manner to battle headquarters, which sounds a siren to alert the island's anti-aircraft gunners...
...Cover) About 2 a.m. a signal rocket burst palely over the fortress island of Corregidor, Japanese batteries which had been shelling the island constantly for seven days opened up with a new and concentrated frenzy from their positions on the heights of Mariveles. Japanese infantrymen, ferried across the channel by small boats and bamboo rafts, swarmed onto the island's low-lying eastern shore...