Monopole 1238443 — Seattle, WA
ConstructedFCC Antenna Structure Registration 1238443 — monopole near Seattle, Washington. Single-shaft steel pole, the standard modern cell-site structure.
At a glance
FCC Antenna Structure Registration 1238443 is a 31 m (100 ft) monopole near Seattle, King County, Washington. Its registration status is constructed, with construction recorded on May 12, 2014. It is registered to UNION PACIFIC RAILROAD, which holds 1,115 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1238443 |
| Unique system identifier | 2636688 |
| Status | Constructed (C) |
| Structure type | Monopole (MTOWER) |
| Date constructed | May 12, 2014 |
| Registration issued | May 12, 2014 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2003-ANM-715-OE |
| FAA circular | 70/7460-1K |
| 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
Omaha, NE · FRN 0001539048
Holds 1,115 FCC structure registrations — view the full portfolio →
Location
- Address
- ARGO YARD, SOUTH LIGHT TOWER
- City
- Seattle
- State
- Washington
- ZIP
- 98108
- County
- King County
- County FIPS
- 53033
- Coordinates
- 47.55444, -122.32250
Within ~40 km
Nearby structures
Building with antenna · Granted (not yet constructed)
Tower (type not specified) · Constructed
Tower (type not specified) · Terminated
Lattice tower · Constructed
Building · Constructed
Guyed tower · Constructed
How tall is structure 1238443 compared with others?
At 31 m, structure 1238443 is about 16% below the 36 m average across the 901 structures registered in King County. It is about 28% below the Washington average of 42 m across 3,660 registrations. Among the 24,638 registrations nationwide filed under the same structure-type code (MTOWER), the average overall height is 42 m, so this one is about 27% below that figure.
The site's filed ground elevation is 7 m, which puts the top of the structure 38 m above mean sea level.
Where is structure 1238443, and what is registered around it?
The registration places the structure near Seattle in King County, Washington, at coordinates 47.55444, -122.32250, with the site address filed as "ARGO YARD, SOUTH LIGHT TOWER". King County has 901 FCC-registered antenna structures, the largest count among the 38 Washington counties with registrations, and 587 of them are marked constructed. Washington as a whole has 3,660 registrations, the 26th-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Seattle, WA · 1314042, a building antenna at 288 m (granted (not yet 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 1238443 on May 12, 2014. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 2,531 in Washington.
Who owns antenna structure 1238443?
The FCC record lists UNION PACIFIC RAILROAD of Omaha, NE as the registered owner, under FCC Registration Number 0001539048. Across the registry it holds 1,115 structure registrations, the 24th-largest portfolio among the 7,865 owners with two or more. Its most common filed structure-type code is MTOWER (411 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 2003-ANM-715-OE and FAA Advisory Circular 70/7460-1K, 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 1238443?
Its registered overall height above ground is 31 m (100 ft), and 38 m (123 ft) above mean sea level.
Who owns tower 1238443?
The registered owner is UNION PACIFIC RAILROAD, which holds 1,115 FCC antenna structure registrations.
Where is antenna structure 1238443?
It is located near Seattle, King County, Washington at ARGO YARD, SOUTH LIGHT TOWER (47.55444, -122.32250). Its status is constructed; it was constructed on May 12, 2014.
What type of structure is 1238443?
It is filed with the FCC under structure-type code MTOWER, which decodes to "Monopole". Single-shaft steel pole, the standard modern cell-site structure. 24,638 registrations nationwide use the same code.
How many antenna structures are registered in King County, WA?
King County has 901 FCC-registered antenna structures, 587 of them constructed — the largest count among 38 counties in Washington.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1238443, 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 1238443, Seattle, King County, Washington”, https://towercensus.com/towers/washington/seattle-1238443 (data as of October 13, 2026).