Building antenna 1203986 — Castro Valley, CA
TerminatedFCC Antenna Structure Registration 1203986 — building with antenna near Castro Valley, California. Building with an antenna mounted on top.
At a glance
FCC Antenna Structure Registration 1203986 is a 25 m (82 ft) building antenna near Castro Valley, Alameda County, California. Its registration status is terminated, with construction recorded on Nov 30, 1999. It is registered to Nextel of California, Inc, which holds 180 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1203986 |
| Unique system identifier | 2600812 |
| Status | Terminated (T) |
| Structure type | Building with antenna (BANT) |
| Date constructed | Nov 30, 1999 |
| Registration issued | Dec 19, 2006 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 99-AWP-1483-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.
Location
- Address
- 20600 John Drive
- City
- Castro Valley
- State
- California
- ZIP
- 94546
- County
- Alameda County
- County FIPS
- 06001
- Coordinates
- 37.69306, -122.09392
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 1203986 compared with others?
At 25 m, structure 1203986 is about 18% below the 31 m average across the 420 structures registered in Alameda County. It is about 23% below the California average of 32 m across 11,860 registrations. Among the 1,597 registrations nationwide filed under the same structure-type code (BANT), the average overall height is 36 m, so this one is about 31% below that figure.
The site's filed ground elevation is 72 m, which puts the top of the structure 97 m above mean sea level.
Where is structure 1203986, and what is registered around it?
The registration places the structure near Castro Valley in Alameda County, California, at coordinates 37.69306, -122.09392, with the site address filed as "20600 John Drive". Alameda County has 420 FCC-registered antenna structures, the 9th-largest count among the 58 California counties with registrations, and 231 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 San Francisco, CA · 1001289, a lattice tower at 298 m (constructed).
What does the status "Terminated" mean?
Terminated means the FCC has ended the registration. The FCC issued registration 1203986 on Dec 19, 2006. Nationally, 8,910 of the 197,770 registrations (4.5%) carry the terminated status, including 1,525 in California.
Who owns antenna structure 1203986?
The FCC record lists Nextel of California, Inc of Reston, VA as the registered owner. Across the registry it holds 180 structure registrations, the 118th-largest portfolio among the 7,865 owners with two or more, including 166 in California. Its most common filed structure-type code is POLE (68 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 99-AWP-1483-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 1203986?
Its registered overall height above ground is 25 m (82 ft), and 97 m (317 ft) above mean sea level.
Who owns tower 1203986?
The registered owner is Nextel of California, Inc, which holds 180 FCC antenna structure registrations.
Where is antenna structure 1203986?
It is located near Castro Valley, Alameda County, California at 20600 John Drive (37.69306, -122.09392). Its status is terminated; it was constructed on Nov 30, 1999.
What type of structure is 1203986?
It is filed with the FCC under structure-type code BANT, which decodes to "Building with antenna". Building with an antenna mounted on top. 1,597 registrations nationwide use the same code.
How many antenna structures are registered in Alameda County, CA?
Alameda County has 420 FCC-registered antenna structures, 231 of them constructed — the 9th-largest count among 58 counties in California.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1203986, 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 1203986, Castro Valley, Alameda County, California”, https://towercensus.com/towers/california/castro-valley-1203986 (data as of October 13, 2026).