Check control communication first
Check Device ready in Video Transmitter. It indicates FC-to-VTX communication, not measured RF output. The VTX table must match the device. This is not a universal settings path for DJI or Walksnail.
Pit Mode is a separate setting
Pit Mode is separate from VTX Table; do not create a power level for it. Activation depends on hardware and protocol. Some SmartAudio versions restrict entering this mode after power-up.
Low Power Disarm changes behaviour
On selects the lowest available power while disarmed. On until first arm does so only before the first arm, then retains the selected power. Neither is equivalent to Pit Mode; check failsafe behaviour separately in the documentation.
A short diagnostic sequence
Editorial advice: record the VTX model, Device ready, Pit Mode and Low Power Disarm. Check the antenna connection. Remove props and change one setting at a time. Menu values cannot prove actual RF output. If these modes do not explain the issue, further diagnosis is needed.
Sources & verification date
Practical guide, not a firmware release announcement. Official documentation checked on October 5, 2026; original dates unconfirmed. No editorial RF power measurements were performed.