FRSKY ASS100ADV Air Speed Sensor
FrSky ADVANCE (ADV) series has comprehensive sensor types and enhanced the performance and capability of the original sensor line, all ADV sensors fully support FBUS protocol and they are also S.Port compatible. With the FBUS protocol, the ADV sensors can be seamlessly paired with the FBUS capable receiver further simplifying the builds setup.
The ASS100 ADV Sensor can be used to measure airspeed at the speed range of 0~360km/h (0~223.7 mile/h)
Specifications:
- Operational Voltage: DC 4 -10V
- Current consumption: 10mA@5V
- Measure airspeed range: 0~360km/h (0~223.7mile/h )
- Circuit Board: Weight 4.9g / Dimensions 33.14*17.14*10.45mm (L*W*H)
- Pitot Tube: Weight 4.4g / Length 101mm / Diameter 2.6mm
- Pitot Tube Hose: Clear silicon tubing, 3 feet (1 meter), 2mm ID, 4mm OD
- Compatible: Receivers with FrSky Smart Port & FBUS function
Package Included:
- 1x FrSky ASS100 Air Speed ADV Sensor
Why We Recommend This
The ASS100ADV is the precision choice for fixed-wing pilots who want real airspeed — not GPS ground speed — displayed live on their transmitter. Essential for warbirds, scale aircraft, and aerobatic builds where stall speed and airspeed management matter. FPV Builds RC provides U.S.-based product support, sensor-selection assistance, and setup guidance for FrSky products purchased through our store.
Frequently Asked Questions:
What is the FrSky ASS100ADV air speed sensor used for?
The ASS100ADV measures indicated airspeed (IAS) via a pitot tube and streams it to your FrSky transmitter as live telemetry. It is primarily used on fixed-wing aircraft — trainers, aerobatics planes, gliders, and scale models — where knowing airspeed is critical for safe operation near stall speed, especially during landing approach. GPS speed tells you ground speed; a pitot sensor tells you aerodynamic speed through the air.
ASS70 vs ASS100ADV — which air speed sensor should I choose?
The ASS70 is designed for models flying below approximately 70 m/s (about 157 mph), making it ideal for trainers, gliders, and most sport aircraft. The ASS100ADV handles higher airspeeds up to approximately 100 m/s (about 224 mph) and is the better choice for fast EDF jets and aerobatics aircraft with higher cruise speeds. Both use the same pitot tube installation method. Browse both at https://www.fpvbuildsrc.com/frsky-sensors.
Which FrSky receivers is the ASS100ADV compatible with?
The ASS100ADV connects via FBUS or S.Port and is compatible with receivers offering a supported and correctly configured FBUS or S.Port telemetry connection. FBUS is the recommended connection for new builds. Browse receivers at https://www.fpvbuildsrc.com/frsky-receivers.
How do I install the pitot tube?
Mount the pitot tube pointing directly forward into the undisturbed airflow, typically at the nose or leading edge of a wing tip, away from propeller wash. The tube's static port should face rearward or to the side. Run the thin tube from the pitot head to the ASS sensor body in the fuselage. Secure mounting is critical — a vibrating pitot gives erratic readings. FrSky provides installation guidance in the ASS100ADV product documentation.
What is the difference between IAS and GPS speed, and why does it matter?
Indicated airspeed (IAS) is the speed of air flowing over your aircraft's surfaces — the aerodynamically relevant speed that determines lift, drag, and stall characteristics. GPS speed is ground speed, which changes with headwind and tailwind. Into a 20 mph headwind, an aircraft flying at 60 mph IAS shows only 40 mph GPS speed. For stall margin management, airspeed always matters more than GPS speed.
How does airspeed display in ETHOS on my transmitter?
When the ASS100ADV is connected via FBUS, airspeed appears as a telemetry field in ETHOS on Tandem X18 and X20 series transmitters. You can display it on your transmitter home screen in m/s, km/h, or mph, and configure low-airspeed audio alerts to warn you of approach-to-stall conditions during flight.
Does FPV Builds RC offer support for the ASS100ADV?
Yes. FPV Builds RC is a U.S.-based FrSky dealer and can assist with pitot tube installation advice and ETHOS telemetry configuration. Browse the full FrSky sensor range at https://www.fpvbuildsrc.com/frsky-sensors.
