Lattice tower 1221073 — Altadena, CA
ConstructedFCC Antenna Structure Registration 1221073 — lattice tower near Altadena, California. Open-framework steel lattice tower.
At a glance
FCC Antenna Structure Registration 1221073 is a 123 m (404 ft) lattice tower near Altadena, Los Angeles County, California. Its registration status is constructed, with construction recorded on Jul 15, 2001. It is registered to American Towers LLC, which holds 21,809 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1221073 |
| Unique system identifier | 2618779 |
| Status | Constructed (C) |
| Structure type | Lattice tower (LTOWER) |
| Date constructed | Jul 15, 2001 |
| Registration issued | Nov 28, 2016 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2016-AWP-10915-OE |
| FAA circular | 70/7460-1L |
| Painting / lighting spec | 4, 5, 12 |
| Marking / lighting code | FAA Style A (9) |
The painting/lighting specification is copied as filed: the FAA marking and lighting chapters and paragraphs cited in the ASR record. The marking/lighting code is decoded using the FCC registration form's code list.
Registered owner
Woburn, MA · FRN 0011498342
Holds 21,809 FCC structure registrations — view the full portfolio →
Location
- Address
- US Post Office/near center of tower farm/Mt. Wilson-5 Site #007510
- City
- Altadena
- State
- California
- ZIP
- 91001
- County
- Los Angeles County
- County FIPS
- 06037
- Coordinates
- 34.22647, -118.06692
Within ~40 km
Nearby structures
Building · Terminated
Guyed tower · Constructed
Guyed tower · Constructed
Building with tower · Terminated
Tower (type not specified) · Constructed
Tower (type not specified) · Constructed
How tall is structure 1221073 compared with others?
At 123 m, structure 1221073 is about 4.4 times the 28 m average across the 2,132 structures registered in Los Angeles County. It is about 3.8 times 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 69% above that figure.
The supporting structure itself measures 122 m; antennas and other appurtenances on top bring the overall height above ground to 123 m. The site's filed ground elevation is 1,740 m, which puts the top of the structure 1,864 m above mean sea level.
Where is structure 1221073, and what is registered around it?
The registration places the structure near Altadena in Los Angeles County, California, at coordinates 34.22647, -118.06692, with the site address filed as "US Post Office/near center of tower farm/Mt. Wilson-5 Site #007510". 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).
What does the status "Constructed" mean?
Constructed means the owner has notified the FCC that construction is complete, so the registry treats the structure as standing. The FCC issued registration 1221073 on Nov 28, 2016. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 6,866 in California.
Who owns antenna structure 1221073?
The FCC record lists American Towers LLC of Woburn, MA as the registered owner, under FCC Registration Number 0011498342. Across the registry it holds 21,809 structure registrations, the largest portfolio among the 7,865 owners with two or more. Its most common filed structure-type code is LTOWER (5,885 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 2016-AWP-10915-OE and FAA Advisory Circular 70/7460-1L, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 9, is listed on the FCC registration form as "FAA Style A". The painting and lighting specification on file cites FAA chapters 4, 5, 12.
Frequently asked questions
How tall is antenna structure 1221073?
Its registered overall height above ground is 123 m (404 ft), and 1,864 m (6,114 ft) above mean sea level.
Who owns tower 1221073?
The registered owner is American Towers LLC, which holds 21,809 FCC antenna structure registrations.
Where is antenna structure 1221073?
It is located near Altadena, Los Angeles County, California at US Post Office/near center of tower farm/Mt. Wilson-5 Site #007510 (34.22647, -118.06692). Its status is constructed; it was constructed on Jul 15, 2001.
What type of structure is 1221073?
It is filed with the FCC under structure-type code LTOWER, which decodes to "Lattice tower". Open-framework steel lattice tower. 35,886 registrations nationwide use the same code.
How many antenna structures are registered in Los Angeles County, CA?
Los Angeles County has 2,132 FCC-registered antenna structures, 1,296 of them constructed — the largest count among 58 counties in California.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1221073, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 13, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1221073, Altadena, Los Angeles County, California”, https://towercensus.com/towers/california/altadena-1221073 (data as of October 13, 2026).