The SPRacingTBEC is the only Race Transponder to feature a built-in 5V regulator!

Built-in 5v regulator (BEC)

The built-in 5V 1 AMP regulator means you don't need a seperate 5V regulator. Plenty of power for your FC, RX, LEDs, etc.


Works at distances up to 5m, even outdoors in sunlight. Use more track-side receivers to further increase sensitivity.

Dual IR LEDs

Two LEDs allows you to position for greater intensity or for clockwise and anti-clockwise tracks.

iLAP Compatible

Works with the most popular transponder receiver system currently in-use worldwide today.


Uses a high-speed transmission to eliminate interference.

7-Digit code

Longer codes, compared to other systems, means you won't have issues with duplicate codes.

Flexible Form Factor

Mount using 30.5mm mount holes and stack above your FC. Or remove the tabs, heat-shrink it and use velcro to mount as appropriate.

Flexible Power Options

Power using 2S-5S Lipo OR power from existing 5V supply, you choose.

Suitable for racing clubs or pilot ownership

Flexible design allows racing club owners to fit them with standard 3 pin cable for use on race days.


The SPRacingTBEC design is:

  • Innovative - First racing transponder with integrated regulator.
  • Flexible - Mounting tabs are removable.
  • Durable - Though-hole connectors for power. Thick PCB.
  • Stackable - Pin headers and 30.5mm mounting holes allow stacking.
  • Compact - Lightweight and measures just 26x13.5m without mounting tabs or 36x13.5mm with mounting tabs.
  • Professional - Symmetrical, Neat and Tidy.


SPRacingTBEC PCB - Top

SPRacingTBEC PCB - Top

SPRacingTBEC PCB - Bottom

SPRacingTBEC PCB - Bottom

SPRacingTBEC PCB - Parts

SPRacingTBEC and Parts

Transponder QR codes

Race Transponder

As you fly around the track the transponder continually transmits your unique code via IR. As your aircraft passes the start/finish timing gate the track-side receiver records your lap-time.

  • Compatible with iLAP receiver systems, as used by by most racing clubs worldwide.
  • Two LEDs which can be used for a wider transmission angle or clockwise/anti-clockwise tracks.
  • Reduces your overall cost for a race-ready air-craft.
  • No fiddling around trying to fit transponders in a hurry on race-day. Just turn up at the race and have the race officials scan your transponder and you're ready!
SPRacingTBEC board and silkscreen

Technical Specifications

  • Measures 36x13.5mm with 2 x 30.5mm mounting hole tabs
  • Measures 26x13.5mm with tabs removed
  • Weight ~3 grams
  • 5V regulator, 1 AMP
  • Power LED
  • Activity LED
  • 1x 2pin though-holes for pin headers for battery.
  • 1x 2pin though-holes for pin headers for 5V in/out.
  • 1x 4pin bottom mounted, JST-SH socket for SWD debugging
  • 1x 4pin bottom mounted, JST-SH socket for UART
  • 2x 2pin through-holes for IR LEDs (supplied).
  • Comes with right-angled and straight pin headers


The latest SPRacingTBEC PDF manual can be downloaded here.


SP Racing TBEC
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