F/S

Failsafe, the conditions that a model’s servos and motor will revert to if the control signal from the transmitter is lost

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F3F

A category of AMA and FAI special interest for slope soaring glider competition

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F3J

A category of AMA and FAI special interest for thermal duration glider competition

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F3K

A category of AMA and FAI special interest for hand launched glider competition

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FAI Choice

A radio set up option to allow practicing with telemetry enabled then engage FAI Mode at the field for competition. see also Build Option

FAI Mode

Disables all telemetry displays, other than RSSI and voltage, to comply with Federation Aeronautique Internationale (FAI) regulations for contests, championships, and record setting activities. Once engaged, this option remains in effect until the firmware is re-flashed.  See also Build Option

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FCS-40

FrSky 40 Amp Current sensor w/Smart Port, for use with FrSky Smart Port enabled receivers, such as X8R, X6R, X4R, etc.,

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Firmware

1. System Firmware (aka: OpenTX): Computer code that tells the RF firmware what to do. This includes any adjustments you might make on your transmitter, the number of channels used and their order, any switch assignments, special rates, etc.. This … Continue reading

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Flash

Describes the act of updating firmware in a device, usually by transfer of information from a computer connected to the device. A synonym for “Burn”

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Flight Modes

Flight Modes are combinations of different model set ups that enhance control under widely different conditions for a given model.  For example glider pilots may want one set of control responses for launch, another for riding a thermal or for … Continue reading

FLVSS

FrSky Lipo Sensor w/Smart Port, for use with FrSky Smart Port enabled receivers, such as X8R, X6R, X4R, etc., Operating voltage range: 2S~6S (6~25V)

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