Gentlemen, I ask for your assistance in identifing some mystery
"Boxes" that are popping up
in my neighborhood. I can offer you the following, and there are also
pictures:

There are 2 slightly different models, they vary in where the vent is
located.

All boxes have 3 connections: Power, antenna, and some sort of other
connection - phone, or
perhaps fiber.

No one asked the city communications department or the city attorney
for permission to install
these. They also would like to know what they are.

All have a fan inside that is running.

The devices were manufactured or owned by Nextel. (See pics.)

The antenna looks to be 800 Mhz.

Here are the pics:

www.picasaweb.google.com/terrryindtw/What_is_it