Is E band used across all 5G sites to other 5G sites where fiber is not available?

Hi Experts.

Just curious about US Telcos.

Is E band used across all 5G sites to other 5G sites where fiber is not available?

Or E band deployed in less or widely in last mile 5G sites?

E-Band generally is used for Microwave, not in RF currently.

Thanks, correct.

But I am curious about backhaul purpose.