Frequency hop at increasing signal power

[DB9JG]

I'm using V1 and V3 MiniRX with H.J.Bernd firmware.
I tested the LSB sensitivity with a signal generator at 10MHz connected to the SMA input additionally terminated with 50Ohms via a T-connector.
The test signal's power is sweeping saw-tooth-shaped between -113dBm and -52dBm within 20s.
As expected the signal plotter of the utilized firmware shows a continously encreasing RSSI(?), but unexpectedly a hopping SNR(?) with a threshold at about -73dBm , even with a kind of hysteresis.

But most interestingly I observe a frequency hop of about 500Hz when the test signal gets higher than the certain level.

This corresponds to my observation of audio distortions, if receiving very strong SSB amateur radio signals. I see this behavior at a V3 AMNVOLT MiniRX as well as at an original V1 miniRX.

I guess that is a SI4732/SSB demodulator/DSP issue and it is most likely not caused by the utilized firmware.

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EDIT:
I HAVE TO CORRECT MY POST.
THIS SEEMS TO BE AN ISSUE OF THE H.J.Berndt FIRMWARE.
I can NOT reproduce it with Max Arnold's Version 2.28
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Can anyone confirm my observation?

I append a video to demonstrate the effect:

trim.F19C1419-E740-4AB9-B34C-FA9B42D9B238.MOV

[DB9JG]

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I HAVE TO CORRECT MY PREVIOUS POST.
THIS SEEMS TO BE AN ISSUE OF THE H.J.Berndt FIRMWARE.
I can NOT reproduce it with Max Arnold's Version 2.28
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