Spektrum Aircraft Telemetry Airspeed Indicator - SPMA9700
by Spektrum

The Spektrum Aircraft Telemetry Airspeed Indicator (SPMA9700) is an updated, precision pitot-static differential pressure telemetry system designed to deliver real-time indicated airspeed (IAS) directly to telemetry-capable Spektrum transmitters. Engineered for scale EDF and turbine jets, gliders, giant-scale aircraft, and fixed-wing UAVs, the SPMA9700 replaces legacy telemetry sensors by integrating dual support for both modern SRXL2 digital bus architectures and traditional X-Bus expansion ports.

Covering a broad operational velocity band from 3 mph up to 200 mph (5 km/h to 322 km/h) with 1 mph resolution, this sensor captures sensitive low-speed approach data to help prevent low-altitude stalls while monitoring dive velocities and maximum cruise performance. Weighing just 3.8 grams for the sensor body and 2.95 grams for the machined pitot probe, it installs with minimal weight impact. It includes flexible silicone pressure tubing, mounting hardware, and both 4-pin JST-ZH and JST-ZH to standard servo adapter leads for plug-and-play installation into Spektrum Smart receivers and NX or iX radio systems.

Key Features

• Dual SRXL2 & X-Bus Protocol Support: Updated digital communication architecture allows direct plug-and-play integration with modern SRXL2 remote receiver/bus ports as well as standard X-Bus telemetry headers.

• Low-Speed to High-Speed Range (3–200 mph): Measures true aerodynamic airspeed from 3 mph to 200 mph with 1 mph resolution, providing accurate stall warnings and approach speed tracking.

• Factory Calibrated Dynamic Sensor: Precision differential transducer requires no complicated manual calibration routines or zero-point resets before flight.

• Ultra-Lightweight Profile (~6.75g Total): Sensor module (3.8g) and machined pitot probe (2.95g) preserve aircraft balance and center of gravity across small EDF jets to giant-scale platforms.

• Complete Harnessing Included: Ships with a 6-inch 4-pin JST-ZH cable, a 6-inch JST-ZH4 to male servo connector, flexible silicone tubing, and airframe mounting brackets.

• Customizable Audio & Haptic Telemetry Alarms: Integrates directly with Spektrum NX and iX transmitters to configure audio callouts, voice alerts, and vibration warnings for minimum approach speeds (stall prevention) and maximum airframe velocity ($V_{NE}$).

Technical Specifications

• Brand / Manufacturer: Spektrum (Horizon Hobby)

• Model Identifier: Aircraft Telemetry Airspeed Indicator

• Manufacturer SKU / Part Number: SPMA9700

• UPC / GTIN: 660132681876

• Sensor Architecture: Dynamic differential pressure sensor (Pitot-Static)

• Airspeed Measurement Range: 3 mph to 200 mph (approx. 5 km/h to 322 km/h)

• Measurement Resolution: 1 mph (1 km/h)

• Telemetry Protocols Supported: Spektrum SRXL2 & Spektrum X-Bus

• Connector Types: 4-pin JST-ZH / Standard 3-pin Servo Header

• Sensor Module Dimensions: 29 mm x 17 mm x 11 mm (1.14 in x 0.66 in x 0.44 in)

• Sensor Module Weight: 3.8 grams (without tubing)

• Pitot Tube Weight: 2.95 grams (without tubing)

• Total Installed Weight: ~6.75 grams (excluding tubing)

• Compatible Telemetry Receivers: Spektrum SRXL2 and X-Bus enabled receivers (e.g., AR637T, AR6610T, AR8020T, AR10360T, AR14400T, AR20400T PowerSafe, and SPM4651T)

• Compatible Transmitters: Spektrum NX Series (NX6, NX8, NX10, NX20), iX Series (iX12, iX14, iX20), and telemetry-enabled DX Series radios

What Is Included

• (1) Spektrum Airspeed Indicator Sensor Module (SPMA9700)

• (1) Machined Pitot Tube Assembly

• (1) Flexible Silicone Pressure Tubing Set

• (1) Airframe Mounting Hardware Pack

• (1) 6-inch 4-Pin JST-ZH Telemetry Cable (SRXL2 / X-Bus)

• (1) 6-inch JST-ZH4 to Male Servo Connector Cable