skip to main content
The County of DuPage
Wheaton, Illinois

DP4B: Station Description (Formerly DP4A)


The County of DuPage, with cooperation from our Public Works Sanitary Division, is operating a Leica GR10 - "GNSS" GPS receiver as a reference station coupled with a AS10 Pillar Antenna. The antenna is mounted on top at the Southeast corner of the Roof of the Knollwood Control Facility.



Station Log  DP4A


More Photos

Rinex Data Symbol 


 DP4A - NGS CORS from June 27 2005 - Decommissioned  Nov. 2012.
 DP4B - CORS (Continuously Operating Reference Station) network since Nov. 2012.

NGS Patch 

CORS Home Page  


DP4B Station Overview


Location:  UNC Burr Ridge, IL (Knollwood Treatment Plant)

GPS Receiver:  Leica GR10.

Antenna:  Leica AS10 Pillar.

Logging Interval:  1 Second

More Resources Link