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​Featherweight GPS Tracker

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The most capable rocketry tracker you can buy for flights up to 262,000 feet.

The Featherweight GPS Tracker is rocketry's longest-range tracking system, and works with iPhone and Android.  Lots of advanced features are available, and more are on the way!

Featherweight GPS Tracker (upd)

$165.00 - $574.00
Available Now!
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Tracker and tracker with ground station enclosure

Hardware Features

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Longest Radio Range 

  • Yes, it really can communicate to space (though GPS data available to 262,467 feet).
  • No directional antenna needed.
  • Efficient link with only 100 mW output power
  • Robust margin for rocket body attenuation etc.
  • No cell service required at the range.  Just download the app over WiFi at home and you're good to go.
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Advanced GPS (u‑blox M10)

  • Simultaneous reception of GPS, GLONASS, Galileo, and BeiDou constellations means more satellites for your tracker to choose from, giving you great reception wherever the antenna is pointed.
  • 10 GPS solutions per second
  • Vertical and horizontal velocity
  • Reports positions up to 80 km (262,467) altitude and up to 500 meters/second (Mach 1.45)
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Small Size and new Longer Battery Life

  • 1.67" x 0.8" board size, not including antenna
  • Tracker can run 16 hours on a small, 400 mAhr single LiPo cell.
  • ​Ground station enclosure can stay up all weekend

Featherweight UI App Tracking Features (iOS and Android compatible)

New tracking display puts all the flight data at your fingertips:

New map view lets you plan the best route for your recovery:

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Spoken Telemetry

  • You phone tells you the flight information so you can keep your eyes on the sky
  • Select your preferred voice and speaking speed
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Data Logging

  • Records GPS 3D velocity, location and signal strength at 10 samples per second for detailed post-flight analysis
  • Approved for use in Tripoli altitude record attempts
  • Google Earth .kml file is automatically generated
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Multi-Stage Flights

  • Monitor two or more stages with one phone app and one ground station.
  • Easily switch channels to monitor each stage.
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Over-the-Horizon Relay

  • Any Featherweight tracker with a line of sight will relay the location of a "lost "rocket
  • Other ground stations at the launch will relay your rocket's landed location back to you automatically (in work)
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Public Telemetry (in work)

  • Follow along with your friends' flight data with the press of a button
  • LCO can monitor flight progress real-time

Downloading the app:

  • Get the latest released version by searching on "Featherweight UI" in the Apple App store for iOS, or Google Play for Android phones

Accessories and options

Tracker Battery + Adapter

$14.00 - $20.00
Shop

915 MHz Replacement Antenna

$10.00
Shop

Dual Battery Charger

$24.00
Shop
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A 3D-printed tracker installation capsule is available from Inverted Pursuits.  This capsule protects the tracker and battery, and clamps it onto a variety of sizes of shock cord so you can install it next to your parachute with no av-bay required.  
Available at Inverted PUrsuit
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Now available with a soldered wire whip antenna as an option when the antenna needs to stick through a bulkhead.  The radio performance of this option is equivalent to the standard stub antenna

Resources

Your browser does not support viewing this document. Click here to download the document.

gps_tracker_manual_2025feb20b.pdf​Download the User's Manual,
​updated Feb 20, 2025

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gs_data_cmds_2020nov15.xlsx
File Size: 123 kb
File Type: xlsx
Download File

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Tracker step file

Download a zip file of all Featherweight step files here.
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38mm Nosecone 3D Model

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  • Home
  • Featherweight GPS Tracker
  • Blue Raven Altimeter
  • Blue Jay Altimeter
  • Av-Bay Components
  • About Us
  • Contact Us
  • Interface Program
  • Privacy Policy
  • Blog