Monopole 1312003 — Somonauk, IL
ConstructedFCC Antenna Structure Registration 1312003 — monopole near Somonauk, Illinois. Single-shaft steel pole, the standard modern cell-site structure.
At a glance
FCC Antenna Structure Registration 1312003 is a 69 m (225 ft) monopole near Somonauk, LaSalle County, Illinois. Its registration status is constructed, with construction recorded on Dec 12, 2003. It is registered to T-Mobile USA Tower LLC, which holds 1,344 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1312003 |
| Unique system identifier | 2711700 |
| Status | Constructed (C) |
| Structure type | Monopole (MTOWER) |
| Date constructed | Dec 12, 2003 |
| Registration issued | Jan 23, 2026 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2019-AGL-7982-OE |
| FAA circular | 70/7460-1L |
| Painting / lighting spec | 4, 8, 12 |
| Marking / lighting code | FAA Style E (7) |
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
Bellevue, WA · FRN 0022193270
Holds 1,344 FCC structure registrations — view the full portfolio →
Location
- Address
- 725 N 48th Rd
- City
- Somonauk
- State
- Illinois
- ZIP
- 60552
- County
- LaSalle County
- County FIPS
- 17099
- Coordinates
- 41.63036, -88.66822
Within ~40 km
Nearby structures
Guyed tower · Constructed
Tower (type not specified) · Canceled
Tower (type not specified) · Dismantled
- Morris, IL · 1219556152 m
Unspecified structure · Constructed
- Elgin, IL · 1009079152 m
Tower (type not specified) · Constructed
- Clare, IL · 1212561152 m
Tower (type not specified) · Canceled
How tall is structure 1312003 compared with others?
At 69 m, structure 1312003 is about 14% below the 80 m average across the 135 structures registered in LaSalle County. It is roughly in line with the Illinois average of 69 m across 7,110 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 64% above that figure.
The site's filed ground elevation is 207 m, which puts the top of the structure 276 m above mean sea level.
Where is structure 1312003, and what is registered around it?
The registration places the structure near Somonauk in LaSalle County, Illinois, at coordinates 41.63036, -88.66822, with the site address filed as "725 N 48th Rd". LaSalle County has 135 FCC-registered antenna structures, the 12th-largest count among the 102 Illinois counties with registrations, and 94 of them are marked constructed. Illinois as a whole has 7,110 registrations, the 6th-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Oglesby, IL · 1028357, a guyed tower at 419 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 1312003 on Jan 23, 2026. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 5,177 in Illinois.
Who owns antenna structure 1312003?
The FCC record lists T-Mobile USA Tower LLC of Bellevue, WA as the registered owner, under FCC Registration Number 0022193270. Across the registry it holds 1,344 structure registrations, the 22nd-largest portfolio among the 7,865 owners with two or more, including 154 in Illinois. Its most common filed structure-type code is TOWER (668 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 2019-AGL-7982-OE and FAA Advisory Circular 70/7460-1L, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 7, is listed on the FCC registration form as "FAA Style E". The painting and lighting specification on file cites FAA chapters 4, 8, 12.
Frequently asked questions
How tall is antenna structure 1312003?
Its registered overall height above ground is 69 m (225 ft), and 276 m (904 ft) above mean sea level.
Who owns tower 1312003?
The registered owner is T-Mobile USA Tower LLC, which holds 1,344 FCC antenna structure registrations.
Where is antenna structure 1312003?
It is located near Somonauk, LaSalle County, Illinois at 725 N 48th Rd (41.63036, -88.66822). Its status is constructed; it was constructed on Dec 12, 2003.
What type of structure is 1312003?
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 LaSalle County, IL?
LaSalle County has 135 FCC-registered antenna structures, 94 of them constructed — the 12th-largest count among 102 counties in Illinois.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1312003, 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 1312003, Somonauk, LaSalle County, Illinois”, https://towercensus.com/towers/illinois/somonauk-1312003 (data as of October 13, 2026).