Analogue receiver and DJI Goggles Issue 

Known problem with this setup
DJI goggles v2
Speedybee analogue module
BDI Version 2 Adapter
THE ISSUE
With other pairs of analog receiver goggles if you lose video feed signal altogether the signal will come back or get better if you fly the drone higher or come back towards the receiver
With this set up once the signal is lost the screen goes completely dead and disconnects from the goggles altogether therefore you completely lose your feed regardless of if you fly the drone back into range or not
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Please note - IMO the issue lies with DJI not updating the firmware to prevent this from happening, the issue has been known about for over 3 years
Both the speedybee and bdi adapter are excellent pieces of kit