Lattice tower 1312905 — San Dimas, CA

At 41 m, structure 1312905 is about 48% above the 28 m average across the 2,132 structures registered in Los Angeles County. It is about 27% above the California average of 32 m across 11,860 registrations. Among the 35,886 registrations nationwide filed under the same structure-type code (LTOWER), the average overall height is 73 m, so this one is about 43% below that figure.

The supporting structure itself measures 34 m; antennas and other appurtenances on top bring the overall height above ground to 41 m. The site's filed ground elevation is 970 m, which puts the top of the structure 1,011 m above mean sea level.

The registration places the structure near San Dimas in Los Angeles County, California, at coordinates 34.16014, -117.79961, with the site address filed as "3 SYCAMORE FLATS MOTORWAY". Los Angeles County has 2,132 FCC-registered antenna structures, the largest count among the 58 California counties with registrations, and 1,296 of them are marked constructed. California as a whole has 11,860 registrations, the 2nd-largest total among the 50 states and DC.

The tallest other registered structure within about 40 km is Claremont, CA · 1012733, a building at 431 m (terminated).

Constructed means the owner has notified the FCC that construction is complete, so the registry treats the structure as standing. The FCC issued registration 1312905 on Oct 14, 2022. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 6,866 in California.

The FCC record lists Los Angeles Regional Interoperable Communications System (LA-RICS) Joint Power Authority c/o Pyramid Network Services of Los Angeles, CA as the registered owner, under FCC Registration Number 0025899725. Across the registry it holds 56 structure registrations, the 320th-largest portfolio among the 7,865 owners with two or more, including 56 in California. Its most common filed structure-type code is LTOWER (42 registrations).

The registration cites FAA aeronautical study 2022-AWP-12241-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".