[greggold]

Interesting stuff Greg.

Do you know what firmware you were using on the happymodel ELRS receiver?

On the happymodel diversity rx it is elrs v 3.2.1.

I realise I should have shown what the normal appearance of the plots of the logs looks like. Here is a log of a flight with the Laser which has a matek r24d rx (2 antennas). I have discovered the scatter plots are best done with google docs calc, rather than Libreoffice.

The RSSI in flights with no incident show 1RSSI and 2RSSI measurements moving around but in a similar pattern. The brief periods before launch and after landing show many values above -40 db, and in the air the range is -45 to -70.

The tx power (TPWR blue) remained at 10 mw for the entire flight, over the 5 min for each one of 600 measurements. The RX signal to noise (red) was mostly 11 db, but dropped to 9 for about 10 of the measurements, and to 8 once.

So far most of my flights are like this, with no incident.