What is Stratux and how does it work?

Stratux is an open-source ADS-B receiver built on Raspberry Pi hardware. It receives traffic signals on 1090 MHz (ADS-B) and 868 MHz (FLARM/OGN) and broadcasts them via WiFi to your tablet or phone running an EFB app like SkyDemon, ForeFlight, or EasyVFR. The device creates its own WiFi hotspot that your mobile device connects to, providing real-time traffic overlay on your moving map.

What's the difference between ADS-B and FLARM?

ADS-B (1090 MHz) is primarily used by commercial and IFR aircraft with Mode S transponders-it's the global standard for airliners and jets. FLARM (868 MHz in Europe, 915 MHz in US/Australia) is more common among gliders, light sport aircraft, and recreational pilots. For complete traffic awareness in Europe, you need both protocols-which all our Stratux devices support. ADS-B has longer range (100+ NM) while FLARM is optimized for close-proximity collision avoidance (typically 5-20 km).

Do I need a certified transponder to use Stratux?

No. Stratux is a receive-only device (ADS-B In) that doesn't require certification. It's designed to enhance your situational awareness by showing traffic on your EFB. However, note that ADS-B Out (broadcasting your position) requires certified equipment for IFR flights in controlled airspace. Stratux with OGN transmission capability can make you visible on the Open Glider Network, but this is separate from certified ADS-B Out.

Which EFB apps are compatible with Stratux?

Stratux works with most popular Electronic Flight Bag apps including SkyDemon, ForeFlight, EasyVFR, Avare, FlyQ, iFly GPS, and many others. Any app that supports the GDL90 protocol over WiFi should work seamlessly with Stratux. Simply connect your device to the Stratux WiFi network, and traffic data appears automatically on your moving map.

What is the difference between Standard, Pro, and Dual Pro Stratux?

Standard Stratux (Entry Level) provides receive-only capability (RX) for ADS-B and FLARM-ideal for pilots who want traffic awareness without transmission. Stratux Pro adds OGN/FLARM transmission via integrated T-Beam module, making you visible on the Open Glider Network. Stratux Dual Pro (Recommended) supports 2x T-Beam modules for maximum range and redundancy, plus includes a premium aluminum case with better heat dissipation.

What is OGN (Open Glider Network)?

OGN is a community-driven network that tracks gliders and other aircraft using FLARM-compatible signals. Ground stations worldwide receive these broadcasts and relay positions to an online tracking system at glidernet.org. With a transmission-capable Stratux (Pro or Dual Pro), you can contribute your position to OGN, making you visible to other pilots, club members, and online trackers-great for competition flying and safety.

What is AHRS and why do I need it?

AHRS (Attitude and Heading Reference System) provides synthetic vision data to your EFB app, showing pitch, roll, and heading information. This creates an artificial horizon display-useful as a backup attitude indicator during IMC or for VFR pilots wanting extra situational awareness. All our Stratux devices include a 9-axis AHRS sensor (accelerometer, gyroscope, magnetometer). The AHRS data is particularly valuable for partial panel training scenarios.

How long does the battery last?

With a typical 10,000mAh USB power bank, you can expect 6-8 hours of continuous operation with a Standard Stratux. Pro models with T-Beam transmission consume slightly more power (approximately 5-7 hours). For long cross-country flights, we recommend a 20,000mAh power bank or connecting to your aircraft's USB port. Always use a quality power bank with at least 2A/5V output for reliable operation.

Can I build my own Stratux?

Absolutely! Stratux is fully open-source, and we provide a comprehensive DIY component guide with shopping lists for Amazon and AliExpress. You'll need a Raspberry Pi 3B+/4, SDR radio receivers, dual-band antennas (1090 MHz + 868 MHz), GPS module, and optionally AHRS/pressure sensors. Our DIY guides cover everything from firmware installation to antenna calibration. However, for most pilots, our pre-built units offer better value when factoring in component sourcing, assembly time, testing, and firmware configuration.

How do I update the Stratux firmware?

Firmware updates can be performed two ways: (1) Via the web interface at 192.168.10.1-navigate to Settings and use the update function if internet is available, or (2) By flashing a new SD card with the latest firmware image using balenaEtcher. We offer pre-configured SD cards with the latest EU or US firmware, or you can download images from the official Stratux Europe project and flash them yourself.

What's the range of Stratux?

Reception range depends heavily on altitude, antenna quality, and line of sight. For ADS-B (1090 MHz), you can typically receive traffic from 50-150+ NM at cruise altitude-commercial airliners at FL350 can be seen from over 200 NM away. FLARM/OGN range is shorter due to the lower power levels, usually 5-20 km depending on terrain and antenna placement. Mounting your Stratux on the glareshield with clear visibility to the sky significantly improves reception.

What is FANET and do I need it?

FANET (Flying Ad-hoc Network) is a protocol designed specifically for paragliders, hang gliders, and other free-flight aircraft. It operates on 868 MHz and provides position sharing with nearby pilots, wind data from ground stations, and even text messaging. If you fly paragliders or operate in areas with significant free-flight activity (like the Alps), FANET reception can be valuable for traffic awareness.

Do you ship internationally?

Yes, we ship worldwide from Germany. Standard shipping to EU countries typically takes 3-5 business days with tracking. International shipping outside the EU takes 7-14 business days and may be subject to import duties, VAT, or customs fees depending on your country's regulations. We provide all necessary export documentation and commercial invoices for customs clearance.

What warranty do you offer?

All Stratux devices come with a 2-year warranty covering manufacturing defects. This includes the Raspberry Pi, SDR modules, AHRS sensors, T-Beam modules, antennas, and cases. We also provide free firmware support and configuration assistance. Damage from improper use, water exposure, or unauthorized modification is not covered, but we offer repair services at reasonable rates.

Can Stratux replace my transponder?

No-Stratux is a traffic awareness tool that complements, not replaces, certified avionics. You still need appropriate transponder equipment (Mode C/S, ADS-B Out) for controlled airspace, IFR operations, and regulatory compliance. Think of Stratux as an additional layer of situational awareness: it shows traffic that ATC might not be calling out, including FLARM-equipped gliders, ultralights, and aircraft outside radar coverage. It's particularly valuable in Class E/G airspace where radar services are limited.

FAQ | Stratux & Anti-Collision Technology Guides | Dross:Aviation

Name: FAQ | Stratux & Anti-Collision Technology Guides | Dross:Aviation
Brand: Dross:Aviation
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Disclaimer

Stratux is not certified aviation equipment. It does not replace a transponder or relieve the pilot of traffic awareness responsibilities. Use as supplementary situational awareness only. Dross:Aviation assumes no responsibility or liability for the use of Stratux devices, firmware flashing, or hardware modifications. All DIY guides are provided without warranty-use at your own risk.

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