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Morse Code To The Rescue!
On Feb 18, 12:53?pm, Cecil Moore wrote:
wrote: Not only that, but his EM wave generator was equipped with a high-gain directive antenna system. And he was equipped with a sophisticated diversity receiving system for those frequencies, too. If an incandescent bulb, too bad most of his power was radiated in the invisible IR range. :-) Very true! However, if the flashlight was one of the new LED models, its DC-power-to-usable-EM-output) conversion efficiency could be very good. The transmitting efficiency (DC-power-to-usable-EM-output) of the typical VHF FM voice radio is typically no better than about 50%. 73 de Jim, N2EY |
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