TheCodeBreakers
The information from it was immediately passed to counterintelligence
units in Hawaii, where invasion was thought highly probable. Their
agents interrogated residents in the neighborhood of the houses
mentioned in the dispatch and listened to recordings of KGMB want ads,
but found that the signal system had never been used. They arrested
Kühn, who confirmed this. He was convicted on espionage charges and
imprisoned at Leavenworth Penitentiary until after the war, when he was
paroled to leave the country.
On December 7, while Honolulu was still reeling from the devastation
of the attack, F.C.C. monitors there picked up a Japanese-language news
broadcast from station jzi in Japan. The announcer boasted of a "death-
defying raid" at Pearl, reported other events, and, about halfway through
the broadcast, declared: "Allow me to especially make a weather forecast
at this time: west wind clear."