Monopole 2685170
Ontario, California · San Bernardino County
Overview
This monopole in Ontario, CA carries FCC registration 2685170. Its overall height is 19 m (62 ft) above ground, putting the top at 317 m above sea level.
The median monopole in California is 21 m tall across 1,241 registrations, so this one sits 10.8% below the typical height for its type.
The registrant is Union Pacific Railroad Company. Railroads maintain their own radio networks along their rights of way, and register the supporting structures in their own name.
At 19 m, the radio horizon for an antenna at the top of this structure works out to roughly 18 km (11.2 mi). That is a geometric limit for flat, unobstructed terrain — real coverage depends on transmit power, frequency, terrain and what is in the way.
Registration density around this point is 79 other structures within a 5 km radius.
Its county accounts for 583 of the 6,865 structures registered across California.
Location
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Registration record
as filed with the FCC| FCC registration | 2685170 |
|---|---|
| Structure type | Monopole |
| Overall height (AGL) | 19 m (62 ft) |
| Height above sea level | 317 m (1,040 ft) |
| Constructed | 2013 |
| Date on record | 9 Dec 2013 |
| Coordinates | 34.06019, -117.64386 |
| County | San Bernardino County |
| Registered owner | Union Pacific Railroad Company |
| Owner type | Railroad |
How it compares
calculated from the full national dataset| Height rank in California | 4615th of 6,865 taller than 32.8% |
|---|---|
| Height rank in Ontario | 50th of 96 |
| Height rank in county | 387th of 583 |
| Median monopole in California | 21 m (70 ft) −10.8% vs median |
| Radio horizon (estimate) | 18 km (11 mi) theoretical maximum, flat terrain |
| Other structures within 5 km | 79 |
Nearest registered structures
| Distance | Bearing | Type | Height | ASR |
|---|---|---|---|---|
| 59 m | W | Monopole | 18 m (60 ft) | 2723243 |
| 134 m | SE | Guyed tower | 25 m (81 ft) | 2720498 |
| 145 m | SE | Pole | 18 m (59 ft) | 2718061 |
| 155 m | SE | Pole | 18 m (60 ft) | 2718062 |
| 521 m | E | Monopole | 18 m (60 ft) | 2723244 |
About this record
A single tubular shaft. Cheaper to permit in built-up areas because it takes little ground space and reads as less industrial than lattice.
This page summarises FCC ASR record 2685170, from the weekly file dated 2026-08-23. Rankings and comparisons on this page are calculated by Pylon Plans from the full national dataset, not supplied by the FCC.
"Owner" is the entity that registered the structure, usually a tower company such as American Tower or Crown Castle. It does not indicate which carriers operate equipment on the structure.