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Hiram Percy Maxim long considered precise frequency control to be the biggest challenge in amateur radio.1 All at once it was set to become everyone’s concern when the new international treaty would take effect in 1929. “As we climb up into the super frequencies, as we do when we use forty meters and below, frequency precision becomes a problem of the first magnitude,” he wrote in Summer 1928. But he was certain that amateurs could devise new techniques and figure … Continue reading