My antennas are :-

Diamond V2000 Triband 6m/2m/70cm (Vertical).

M0CVO – Magitenna 80m – 6m (End Fed) Sloping SE.

Ultimax100 – 80m – 6m (End Fed) Sloping NE.

Both the above antennas have M0CVO isolators.

Chelcom Nest Of Dipoles Specifically Made For Civil/Military Airband

Radio Rama SBS Aviation Antenna

All antennas are at about 9m above ground 10m ASL

I am however surrounded by hills and I am at the bottom of 3.