Signal strength in INav
In INAV it’s almost the same as with the old BetaFlight methode, except that you don’t need to assign LQ to
a channel in the channel map menu.
INav reads the LQ from the CRSf stream and outputs it automatically on Channel 17 (from INav).
Link States
LQ
Link quality
The number of packages that arrive correctly. If the number starts to drop, more packages are lost.
In the TBS OSD’s the LQ is scaled from 0-300%:
● 0-100%: 50/4 Hz mode
● 170-300%: 150Hz mode
If you use LQ as sensor by the channel/ output map menu or as OpenTx telemetry sensor, it behaves like
this:
● 150Hz mode: 100%
● 50/4Hz mode: 0-100%
RSSI
Relative signal strength indicator
How “loud” the signal is, that the receiver “hears”. But this also includes noise.
The RSSI is exponential which results in a massive drop at the beginning and slows down the lower it gets.
In general: double the range will result in a drop of -6dBm. An example:
● RSSI at 0m = -10dBm
● RSSI at 1m = -16dBm
● Rssi at 2m = -22dBm
The Crossfire can go down to -130dBm before the link breaks up.
If you use RSSI as sensor by the channel/ output map menu or as OpenTx telemetry sensor, it will be
shown like this:
● -0.1dBm = 100%
● -130dBm = 0%
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