v2024.06.01 AWS

Private Continuously Operating Reference Stations (CORS)

A permanent CORS base station at your facility (jobsite or office) will provide reliable and accurate GNSS corrections for up to 30-mile (radius) coverage.

Extremely low deployed price

Simple deployment and configuration

Consistent Base coordinates tied to the national frame

Single-baseline RTK without network interpolation

Reduces exposure to theft of GNSS Base

Saves time, no base setup on jobs

Fixed cost, regardless of number of Rovers

Full constellation and signal support

Both internet and UHF radio corrections from a single station

Password protected NTRIP server and/or DIP access

Multiple correction types and streams:
    RTCM3.2, RTCM3, CMR+, sCMRx, RT27

Simple connection to your existing office internet service

Remote configuration

Easily integrated into regional and private CORS networks

A local CORS base may provide better corrections than public networks:

Full Constellation and All Signals

Shorter Baseline between Base and Rover

iGage stocks all components needed to deploy top-of-the-line CORS systems at very reasonable prices. Full featured internet connected CORS systems are typically deployed (receiver + choke ring antenna + mount + cables) for the price of a dedicated Base receiver. We can not advertise our sale prices, please call us for quotations.

iGage provides initial monitoring and position evaluation for determination of broadcast coordinates.

[ receivers ] [ antennas ] [ mounts ] [ accessories ] [ resources ]

Reference Receivers

Device Image


Brochure Engine Price
CHC P3E [ P3D UM ] [ P3E B ] [ BD970 ] limited
please call
C18 [ C18 GSG ] [ C18 B ] [ BD990 ] $4,475
CHC P2 [ P2 UM ] [ P2 B ]
[ P2Pro B ]
[ BD990 ] $4,475

Limited Number Available

GNSS Antennas

Description Image Information Robotic Type-Mean Calibration Price
C220CR [ C220CR B ] YES $2,505
Includes dome

GPS L1/L2E/L2C/L5, GLO L2/L2/L3, GAL E1/E5A/E5B/E5AltBOC/E6 , BDS B1/B2/B3, QZSS L1/ L2C/L5/LEX, IRNSS L5, SBAS: L1/L5, MSS L-band: OmniSTAR/Trimble RTX 2D chokering antenna

YES $2,300
ARFSSA GPS L1/L2E/L2C/L5, GLO L2/L2/L3, GAL E1/E5A/E5B/E5AltBOC/E6 , BDS B1/B2/B3, QZSS L1/ L2C/L5/LEX, IRNSS L5, SBAS: L1/L5, MSS L-band: OmniSTAR/Trimble RTX ground plane antenna NO $590


Description Image Information   Price
iGage Mount - iGM
2" and 5/8"-11 TPI
[ Brochure ]  


SECO Adjustable Tilt Monument Mounts

[ 2072-30 1 1/2" PIPE ] $352
[ 2072-31 2" PIPE ] $388
[ 2072-32 3" PIPE ] $448
[ 2072-33 5/8-11 ] $361

price updated 6/1/2022

Custom Antenna Cables

Cable Type Image Termination Price
LMR195 TNC-M to TNF-M $12 + $1 per foot
LMR195 TNC-M to TypeN-M $12 + $1 per foot

UHF Broadcast Radios and Accessories




Part Number


iGR iGR Complete Kit

[ iGR Information, includes information on cables and antennas ]


[ iGR Price ]

CORS installation resources

Even though you may not be adding your new private CORS site to an existing GNSS campaign, consider reading the following resources for site selection information and construction suggestions:

NGS Best Practices: web page, guidelines, PAT20, approved antennas, 'Draft NGS RTN...', FGS/RTN

UNAVCO: 'Proceedures for Setting a CORS Monument', https://www.unavco.org/permanent-station-support/

ICSM (AU): 'Guideline for Continuously Operating Reference Stations'

IGS: 'Station Operator Resources', IGS Site Guidelines (2015)

USCG: 'CORS/RTN Monument Construction Guidelines'

UCSD: https://pfostrain.ucsd.edu/gpsmon/monument_design/ngscomments.pdf

Consider subscribing to IGS Mail Lists 'IGS Mail' 'IGS Equipment Files'

iGage Mapping Corporation
1545 South 1100 East #1;  Salt Lake City UT 84105 USA
+1 801 412-0011 Fax: +1 801 412-0022
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