Talk:Jonathan Kincaid/@comment-108.191.84.131-20191023190906

Kincaid removed the vacuum tubes, not transistors, from the radio transceiver in the helicopter. (In 1966, transistors could do small-signal functions, but RF power amplifiers still needed tubes. Consequently Kincaid's transceiver was likely to be a hybrid design, using transistors in the low-level stages but a pair of beam tetrode tubes in the final amplifier, as in the Yaesu FT-101.) ...de AC4AQ