'Vario' Airplane Data Controller

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"Vario" Glider/Model airplane data controller
Altitude.jpg
Frequencies 462.61 MHz,462.725 MHz
Frequency Range 462.61 MHz - 462.725 MHz
Mode NFM
Modulation Voice and Data
ACF
Bandwidth 6 kHz
Location United States
Short Description This transmitter is found within the UHF FMRS bands, most likely used at airshows to give off barometric pressure, height in altitude represented by a voice, including various tones representing how high/how low the model plane is in the air.
I/Q Raw Recording
Audio Sample

The SkyAssistant variometer is a small on-board instrument which indicates the RC sailplane model's vertical speed by an audible signal. Lift is indicated by a pulsed tone with rate and frequency of the pulses depending on the climb rate. Sink is indicated by a low, continuous tone depending on the sink rate. Audible signal and voice messages about model state are transmitted by built-in radio transmitter and can be received on standard LPD or PMR receiver (European version), FRS (American version) or UHFUltra High Frequency (300-3000 MHz) CB (Australian version).