Monopole 1321022 — Windsor, CA

At 17 m, structure 1321022 is about half of the 34 m average across the 122 structures registered in Sonoma County. It is about half of the California average of 32 m across 11,857 registrations. Among the 24,598 registrations nationwide filed under the same structure-type code (MTOWER), the average overall height is 42 m, so this one is about 40% of that figure.

The site's filed ground elevation is 32 m, which puts the top of the structure 49 m above mean sea level.

The registration places the structure near Windsor in Sonoma County, California, at coordinates 38.53142, -122.81258, with the site address filed as "1580 Mitchell Lane". Sonoma County has 122 FCC-registered antenna structures, the 24th-largest count among the 58 California counties with registrations, and 57 of them are marked constructed. California as a whole has 11,857 registrations, the 2nd-largest total among the 50 states and DC.

The tallest other registered structure within about 40 km is Vallejo, CA · 1244462, a tower at 221 m (granted (not yet 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 1321022 on Sep 30, 2025. Nationally, 18,398 of the 197,703 registrations (9.3%) carry the granted (not yet constructed) status, including 1,202 in California.

The FCC record lists AT&T Mobility Spectrum LLC of Plano, TX as the registered owner, under FCC Registration Number 0014980726. Across the registry it holds 1,606 structure registrations, the 20th-largest portfolio among the 7,865 owners with two or more, including 433 in California. Its most common filed structure-type code is MTOWER (627 registrations).

The registration cites FAA aeronautical study 2021-AWP-10582-OE, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 1, is listed on the FCC registration form as "None".