Hope it's not too late ... Can you send me the details of your active
antenna too ? Would be interesting for a camouflaged remote receiver
which converts LF to VHF (or UHF).
Furthermore, I noticed you were using SpecLab for the TA screenshot.
This is a matter of taste: For really weak signals, I prefer the
"Sunrise" color palette which gives better contrast than the quite
colour-overloaded default palette. You can select a lot of different
colour palettes from the main menu under "File".."Waterfall Colour
Wolf DL4YHF .