Low ADS-B message rate

Diagnose gain, overload, USB stability and decoder health.

Separate reception from traffic

  1. Compare aircraft count and messages per second together. Low traffic naturally produces fewer messages.
  2. Confirm the decoder is continuously receiving samples and has no USB disconnects.
  3. Inspect the strong-signal percentage. Excessively strong signals suggest overload; almost no strong signals suggest loss or insufficient gain.
  4. Check CPU throttling and power quality, especially on Raspberry Pi installations.
  5. Confirm only one decoder owns the SDR device.

Use the gain tuner

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