Selecting high‑power wireless modules for UAV FPV video downlink: higher transmit power improves link budget, yet real‑world performance relies on antenna setup, channel planning, thermal integration and complete system validation, rather than power specs only.
A high-power wireless module is often considered when an ordinary radio link loses stability before the device reaches its required operating distance. Output power ratings such as 27dBm, 29dBm, and 30dBm can sound like small numerical differences, but they materially affect the RF link budget.