Knowledge Base

Diagnose and fix common FPV video signal issues including static, no picture, interference, and signal breakup. Covers VTX settings, antenna problems, and frequency management.

Built-in ADC current sensors on flight controllers have 10-20% error. External Hall effect sensors offer 1-2% accuracy for reliable OSD battery monitoring.

How to calibrate ESCs in Betaflight and ArduPilot. Covers Motors tab calibration, radio setup, and troubleshooting uneven motor performance.

Compare RFdesign telemetry modems: 868x, 868ux, 900x, and 900ux. Find out which long-range drone radio is right for your build.

Learn how to build a complete long-range drone data link using RFdesign telemetry modems and TXMOD for reliable control and telemetry beyond 15km.

A guide to choosing the right telemetry cable for your Pixhawk flight controller and RFdesign modem. Covers pinouts, cable types, and compatibility for RFD868x, RFD900x,...

The RFDesign TXMOD adds long-range RC control to your transmitter over 868/900MHz. Learn how it works, which radios are compatible, and what you need to...

Step-by-step guide to setting up RFdesign RFD900x and RFD868x telemetry radios with ArduPilot and PX4. Connect, configure, and test your long-range data link.

NDAA compliant drone radios explained. Learn why RFdesign telemetry modems meet US government requirements and how to choose the right model for your operations.

Choosing the right antenna for your long-range drone telemetry setup. Covers omnidirectional, directional, and patch antennas with range testing tips for 868MHz and 900MHz.

Compare the RFD900x and RFD868x long-range telemetry modems. Learn which RFdesign radio is right for your drone build based on region and frequency band.

Comparing Pixhawk 6X, 6C, and 6C Mini flight controllers. Find out which Holybro autopilot board suits your drone build, from pro to compact.