Antenna type?

[JamesBrox]

What frequency range is this type of antenna. In the foreground. Thx

 

[Whiskey3JMC]

Looks like a Delta Loop?

Delta Loop for HF

 

[nd5y]

It looks like an EAntenna Systems delta loop.
There are several models.

EANTENNA 17826.07B EAntenna HF Rotatable Antennas | DX Engineering

Free Shipping - EAntenna HF Rotatable Antennas with qualifying orders of $99. Shop HF Directional Antennas at DX Engineering.

www.dxengineering.com

I don't think the manufacturer has a web site.