Monopole 2706592
Ontario, California · San Bernardino County
Overview
A monopole of 18 m (60 ft), structure 2706592 has stood in Ontario, CA for about 8 years.
Compared with other monopole registrations in California, it is 14.1% shorter than the median of 21 m.
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 18 m, the radio horizon for an antenna at the top of this structure works out to roughly 18 km (11 mi). That is a geometric limit for flat, unobstructed terrain — real coverage depends on transmit power, frequency, terrain and what is in the way.
Its nearest neighbour is a pole 413 m to the E, standing 21 m tall.
Ranked 63rd by height among the 96 registered structures in Ontario, CA, it sits within a network of sites that between them cover the surrounding area.
Location
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Registration record
as filed with the FCC| FCC registration | 2706592 |
|---|---|
| Structure type | Monopole |
| Overall height (AGL) | 18 m (60 ft) |
| Height above sea level | 309 m (1,015 ft) |
| Constructed | 2018 |
| Date on record | 25 Jul 2018 |
| Coordinates | 34.06267, -117.61144 |
| 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 | 4780th of 6,865 taller than 30.4% |
|---|---|
| Height rank in Ontario | 63rd of 96 |
| Height rank in county | 415th of 583 |
| Median monopole in California | 21 m (70 ft) −14.1% vs median |
| Radio horizon (estimate) | 18 km (11 mi) theoretical maximum, flat terrain |
| Other structures within 5 km | 85 |
Nearest registered structures
| Distance | Bearing | Type | Height | ASR |
|---|---|---|---|---|
| 413 m | E | Pole | 21 m (70 ft) | 2613022 |
| 448 m | W | Monopole | 17 m (55 ft) | 2694014 |
| 558 m | NNW | Building with pole | 26 m (84 ft) | 116924 |
| 621 m | E | Tower | 15 m (49 ft) | 2649237 |
| 1.4 km (0.9 mi) | W | Tower | 17 m (55 ft) | 2657209 |
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.
Record 2706592 is drawn from the FCC ASR weekly file dated 2026-08-23. The database covers structures that require registration — generally those over 200 ft or near airports — so shorter masts and small cells will not appear.
"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.