Tower 1218124 — San Carlos, CA
ConstructedFCC Antenna Structure Registration 1218124 — tower (type not specified) near San Carlos, California. Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole.
At a glance
FCC Antenna Structure Registration 1218124 is a 21 m (68 ft) tower near San Carlos, San Mateo County, California. Its registration status is constructed, with construction recorded on May 14, 2003. It is registered to San Mateo County Transit District.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1218124 |
| Unique system identifier | 2615700 |
| Status | Constructed (C) |
| Structure type | Tower (type not specified) (TOWER) |
| Date constructed | May 14, 2003 |
| Registration issued | May 1, 2002 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 00-AWP-2689-OE |
| FAA circular | — |
| Painting / lighting spec | NONE |
| Marking / lighting code | None (1) |
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
San Mateo County Transit District
San Carlos, CA · FRN 0004121349
Location
- Address
- 501 Pico Street
- City
- San Carlos
- State
- California
- ZIP
- 94070
- County
- San Mateo County
- County FIPS
- 06081
- Coordinates
- 37.51692, -122.25164
Within ~40 km
Nearby structures
Lattice tower · Constructed
Building with antenna · Constructed
Building with antenna · Terminated
Building with antenna · Granted (not yet constructed)
Tower (type not specified) · Constructed
Building with antenna · Terminated
How tall is structure 1218124 compared with others?
At 21 m, structure 1218124 is roughly in line with the 22 m average across the 330 structures registered in San Mateo County. It is about 36% below the California average of 32 m across 11,862 registrations. Among the 75,198 registrations nationwide filed under the same structure-type code (TOWER), the average overall height is 76 m, so this one is about 27% of that figure.
The supporting structure itself measures 15 m; antennas and other appurtenances on top bring the overall height above ground to 21 m. The site's filed ground elevation is 1 m, which puts the top of the structure 22 m above mean sea level.
Where is structure 1218124, and what is registered around it?
The registration places the structure near San Carlos in San Mateo County, California, at coordinates 37.51692, -122.25164, with the site address filed as "501 Pico Street". San Mateo County has 330 FCC-registered antenna structures, the 11th-largest count among the 58 California counties with registrations, and 153 of them are marked constructed. California as a whole has 11,862 registrations, the 2nd-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is San Francisco, CA · 1001289, a lattice tower at 298 m (constructed).
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 1218124 on May 1, 2002. Nationally, 141,898 of the 197,833 registrations (71.7%) carry the constructed status, including 6,869 in California.
Who owns antenna structure 1218124?
The FCC record lists San Mateo County Transit District of San Carlos, CA as the registered owner, under FCC Registration Number 0004121349.
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 00-AWP-2689-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".
Frequently asked questions
How tall is antenna structure 1218124?
Its registered overall height above ground is 21 m (68 ft), and 22 m (71 ft) above mean sea level.
Who owns tower 1218124?
The registered owner is San Mateo County Transit District.
Where is antenna structure 1218124?
It is located near San Carlos, San Mateo County, California at 501 Pico Street (37.51692, -122.25164). Its status is constructed; it was constructed on May 14, 2003.
What type of structure is 1218124?
It is filed with the FCC under structure-type code TOWER, which decodes to "Tower (type not specified)". Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole. 75,198 registrations nationwide use the same code.
How many antenna structures are registered in San Mateo County, CA?
San Mateo County has 330 FCC-registered antenna structures, 153 of them constructed — the 11th-largest count among 58 counties in California.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1218124, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 20, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1218124, San Carlos, San Mateo County, California”, https://towercensus.com/towers/california/san-carlos-1218124 (data as of October 20, 2026).