6-tower array 1253376 — Northbrook, IL

At 49 m, structure 1253376 is roughly in line with the 48 m average across the 965 structures registered in Cook County. It is about 29% below the Illinois average of 69 m across 7,110 registrations. Among the 4 registrations nationwide filed under the same structure-type code (6GTA1), the average overall height is 79 m, so this one is about 38% below that figure.

The site's filed ground elevation is 200 m, which puts the top of the structure 249 m above mean sea level.

The registration places the structure near Northbrook in Cook County, Illinois, at coordinates 42.13903, -87.88581, with the site address filed as "near Northbrook, Illinois". Cook County has 965 FCC-registered antenna structures, the largest count among the 102 Illinois counties with registrations, and 641 of them are marked constructed. Illinois as a whole has 7,110 registrations, the 6th-largest total among the 50 states and DC.

The tallest other registered structure within about 40 km is Chicago, IL · 1032959, a building tower at 527 m (constructed).

Granted means the FCC has issued the registration, but the record does not yet carry the owner's notice that construction was completed. The FCC issued registration 1253376 on Oct 25, 2012. Nationally, 18,387 of the 197,770 registrations (9.3%) carry the granted (not yet constructed) status, including 445 in Illinois.

The FCC record lists Polnet Communications, Ltd. of Chicago, IL as the registered owner, under FCC Registration Number 0005880075. Across the registry it holds 13 structure registrations, including 13 in Illinois. Its most common filed structure-type code is TOWER (4 registrations).

The registration cites FAA aeronautical study 2006-AGL-1039-OE and FAA Advisory Circular 70/7460-1K, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 7, is listed on the FCC registration form as "FAA Style E". The painting and lighting specification on file cites FAA chapters 4, 8, 12.