HeliTach is an acoustic tachometer for radio controlled helicopters. It works by recording an audio sample of the helicopter and using an
algorithm to analyze the sound of the helicopter's blades or engine. HeliTach has an "Electric" mode that listens to the sound of the blades
and a "Nitro/Gas" mode that listens to the engine RPM to measure
headspeed. The "Electric" mode can work with nitro/gas helicopters but
not vice versa. Set the settings for the applicable mode,…
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