Altus Metrum TeleMetrum Altimeter Features and Setup Guide
By High Power Model Rocketry | Published: 2026-10-22
Category: Product Reviews
Get a clear overview of the TeleMetrum altimeter's GPS tracking, dual-deploy capability, and setup steps. Answers common questions for high-power rocketry enthusiasts.
Quick answer
The TeleMetrum is a recording dual-deploy altimeter with integrated GPS and a telemetry link, ideal for tracking and recovering high-power rockets. Setup involves installing the altimeter, configuring the AltOS software, and pairing it with the TeleBT tracking system.
What makes the TeleMetrum different from basic altimeters?
Most altimeters only record altitude or fire ejection charges. The TeleMetrum adds a built-in GPS module and a 70cm ham-band telemetry link, so you can track your rocket in flight and locate it after landing. This is a major advantage for high-power flights where visual tracking is difficult.
The integrated GPS also means you don't need a separate tracker or additional wiring, reducing complexity in the avionics bay.
What are the trade-offs of using the TeleMetrum?
The TeleMetrum requires a ham radio license to operate the 70cm telemetry link legally in most countries. If you don't have a license, you cannot use the live tracking feature, though the altimeter still records data and fires charges.
You also need the TeleBT tracking system (sold separately) to receive the telemetry data. This adds to the overall cost, so budget accordingly.
TeleMetrum altimeter FAQ
- How do I set up the TeleMetrum for the first time?
- Install the altimeter in the avionics bay per the manual. Connect the battery and download the AltOS software from the Altus Metrum website. Use the software to configure ejection charge delays, GPS settings, and telemetry parameters. Then pair with the TeleBT receiver for live tracking.
- Can I use the TeleMetrum without a ham radio license?
- Yes, but you will not be able to use the telemetry link. The altimeter will still record altitude data and fire ejection charges. Check local regulations; some countries allow low-power telemetry without a license. If you skip the telemetry, you lose live GPS tracking, but the altimeter still works as a standard dual-deploy unit.
- What is dual deployment and how does the TeleMetrum handle it?
- Dual deployment uses two ejection charges: one at apogee to deploy a drogue chute (slowing descent), and another at a preset lower altitude to deploy the main chute. The TeleMetrum can fire both charges using separate outputs, configurable via AltOS. Make sure to test your charge configurations on the ground before flight to avoid premature or failed deployments.
- How do I retrieve logged flight data?
- After the flight, connect the TeleMetrum to your computer via USB. Open AltOS and select 'Download Flight Data'. The software saves altitude, speed, and GPS coordinates in a format you can view or export. Always download data before making any changes to the altimeter configuration, as some operations may overwrite the log.
Product facts
- Altus Metrum TeleMetrum Altimeter with GPS: Recording dual-deploy altimeter with integrated GPS and telemetry link. You get both altitude recording and live GPS tracking in one unit, simplifying your avionics setup.
Altus Metrum TeleMetrum Altimeter with GPS - Altus Metrum TeleMetrum Altimeter with GPS: Supports dual deployment (can fire 2 ejection charges). Allows you to separate recovery events (e.g., drogue at apogee, main at lower altitude) for safer, more controlled landings.
- Altus Metrum TeleMetrum Altimeter with GPS: Tracking requires the TeleBT tracking system. The TeleBT receiver is necessary to receive the telemetry data; plan for this additional purchase if you want live tracking.
