Tower detail

Approximate cell site near Markham, IL

Approximate location near Markham, IL 60428. Crowdsourced cell site owned by Unknown / crowdsource-derived with 1 listed carrier presences.

Unknown height Height

Crowdsourced cell site

Unknown / crowdsource-derived Owner

Structure registrant or inferred host

1 Carrier count

Distinct carrier presences on this site

Crowdsourced only Data quality

No nearby registered structure found

Structure facts

What the site currently knows about this tower, pulled from the public source stack behind the route graph.

Registration Crowdsourced-only site
Location Markham, IL 60428
Lighting Unknown
Status Observed in OpenCelliD
Coordinates 41.61179, -87.68055
Notes Approximate OpenCelliD-only site clustered from 4 cell observations across 81 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Carrier presence

The carrier and technology hints that make this more useful than a raw tower-owner listing.

T-Mobile

Approx. 5.2 miles
5G NR LTE

Approximate site confidence built from 3 cell observations across 80 crowd samples.

Nearby pages

Other tower detail pages within a short drive of this site.

Markham, IL

Crowdsourced only

Approximate cell site near Markham, IL

Crowdsourced cell site with 2 carrier presences. Approximate OpenCelliD-only site clustered from 14 cell observations across 149 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Markham, IL 60428

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.6 miles
AT&T T-Mobile
5G NR LTE

Posen, IL

ASR matched

Posen 135.0 ASR-1011925

135.0 with 0 carrier presences. Built from FCC ASR registration data; carrier overlays come from nearby OpenCelliD cells.

15000 S ROCKWELL

135 ft 135.0 Registered owner 0.6 miles

Posen, IL

ASR matched

Posen 135.0 ASR-1056805

135.0 with 0 carrier presences. Built from FCC ASR registration data; carrier overlays come from nearby OpenCelliD cells.

15000 S ROCKWELL

135 ft 135.0 Greg 0.6 miles

Posen, IL

Crowdsourced only

Approximate cell site near Posen, IL

Crowdsourced cell site with 2 carrier presences. Approximate OpenCelliD-only site clustered from 18 cell observations across 162 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.

Approximate location near Posen, IL 60469

Unknown height Crowdsourced cell site Unknown / crowdsource-derived 0.7 miles
AT&T T-Mobile
5G NR LTE

Why this detail page matters

The product logic behind showing a standalone tower page instead of burying the record in a generic list.

  • Exact ASR structures and crowdsourced-only nodes are both listed, with the difference labeled rather than hidden.
  • Tower owner is often a neutral host like Crown Castle or American Tower, not the wireless carrier itself.
  • Coverage ranges here are rough carrier-level estimates derived from reported cell radii. Treat them as indicative, not exact.