Monopole 1050585 — Grinnell, IA
ConstructedFCC Antenna Structure Registration 1050585 — monopole near Grinnell, Iowa. Single-shaft steel pole, the standard modern cell-site structure.
At a glance
FCC Antenna Structure Registration 1050585 is a 55 m (180 ft) monopole near Grinnell, Poweshiek County, Iowa. Its registration status is constructed, with construction recorded on Jul 6, 1998. It is registered to American Towers LLC, which holds 21,809 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1050585 |
| Unique system identifier | 612174 |
| Status | Constructed (C) |
| Structure type | Monopole (MTOWER) |
| Date constructed | Jul 6, 1998 |
| Registration issued | Sep 19, 2019 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 2006-ACE-308-OE |
| FAA circular | 70/7460-1K |
| 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
Woburn, MA · FRN 0011498342
Holds 21,809 FCC structure registrations — view the full portfolio →
Location
- Address
- 4129 St Hwy 146
- City
- Grinnell
- State
- Iowa
- ZIP
- 50112
- County
- Poweshiek County
- County FIPS
- 19157
- Coordinates
- 41.69006, -92.72842
Within ~40 km
Nearby structures
Guyed tower · Constructed
Tower (type not specified) · Canceled
Guyed tower · Constructed
- Victor, IA · 1045883152 m
Tower (type not specified) · Constructed
- Victor, IA · 1326408152 m
Guyed tower · Granted (not yet constructed)
Tower (type not specified) · Canceled
How tall is structure 1050585 compared with others?
At 55 m, structure 1050585 is about 28% below the 77 m average across the 48 structures registered in Poweshiek County. It is about 30% below the Iowa average of 79 m across 4,130 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 31% above that figure.
The supporting structure itself measures 54 m; antennas and other appurtenances on top bring the overall height above ground to 55 m. The site's filed ground elevation is 307 m, which puts the top of the structure 362 m above mean sea level.
Where is structure 1050585, and what is registered around it?
The registration places the structure near Grinnell in Poweshiek County, Iowa, at coordinates 41.69006, -92.72842, with the site address filed as "4129 St Hwy 146". Poweshiek County has 48 FCC-registered antenna structures, the 24th-largest count among the 99 Iowa counties with registrations, and 42 of them are marked constructed. Iowa as a whole has 4,130 registrations, the 20th-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Marshalltown, IA · 1017839, a guyed tower at 198 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 1050585 on Sep 19, 2019. Nationally, 141,895 of the 197,770 registrations (71.7%) carry the constructed status, including 3,267 in Iowa.
Who owns antenna structure 1050585?
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 2006-ACE-308-OE and FAA Advisory Circular 70/7460-1K, 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 1050585?
Its registered overall height above ground is 55 m (180 ft), and 362 m (1,186 ft) above mean sea level.
Who owns tower 1050585?
The registered owner is American Towers LLC, which holds 21,809 FCC antenna structure registrations.
Where is antenna structure 1050585?
It is located near Grinnell, Poweshiek County, Iowa at 4129 St Hwy 146 (41.69006, -92.72842). Its status is constructed; it was constructed on Jul 6, 1998.
What type of structure is 1050585?
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 Poweshiek County, IA?
Poweshiek County has 48 FCC-registered antenna structures, 42 of them constructed — the 24th-largest count among 99 counties in Iowa.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1050585, 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 1050585, Grinnell, Poweshiek County, Iowa”, https://towercensus.com/towers/iowa/grinnell-1050585 (data as of October 13, 2026).