User's Guide

transmitting station, high voltage wires) at least 200 m (656 feet)

 Mounted 1.5 m (5 feet) above any nearby signal reflectors.

 Mount stability that is not influenced by thermal expansion, wind loading, or soil

expansion/contraction.

For additional information on this topic, research the reference antenna installation

guidelines published by the:

 US National Geodetic Survey

 (http://www.ngs.noaa.gov/PUBS_LIB/CORS_guidelines.pdf)

 International GNSS Service

 (http://igscb.jpl.nasa.gov/network/guidelines/guidelines.html)

4.2 System installation

4.2.1 Supported Antenna

The receiver provides a TNC-type female connector for connecting to an antenna.

The receiver is intended for use with a CHC Geodetic GNSS antenna or a CHC GNSS

Choke Ring antenna.

Other GNSS antennas may, however, be used ensuring that the antenna receives the

proper GNSS frequencies and operates at either 3.3V or 7.1V with a signal greater

than 40 dB at the antenna port.

CHC AT312 GNSS

Geodetic Antenna

CHC C220GR2 GNSS

Choke Ring Antenna