Avionics Standard: ExpressLRS 3.x & Betaflight 4.4 Reference Baseline

Review Policy

Comparison criteria

  • Flight-environment fit and airframe size.
  • Protocol compatibility across transmitter, receiver, flight controller, and video system.
  • Repair cost, spare-part access, and modular replacement paths.
  • Video latency and range trade-offs.
  • Budget path from simulator to first flight.

Evidence limits

Evidence is specification research, not independently verified testing.

We do not claim dyno, lab, or destructive field testing. Thrust, range, and flight-time figures are not treated as universal facts, and seller-advertised numbers stay labeled.

What we do not claim

No tested badges, no crashproof claims, no fake pricing strings, and no product purchase guarantees. Mounting and clearance details are shown as listed, not confirmed by measurement.