1. Introduction
The TX325 transmitter sends data via Geostationary Operational Environmental Satellites (GOES),
and is the successor to the TX321. In the Western Hemisphere, the TX325 is compatible for use
with NOAA GOES DCS with a coverage range including Canada, the United States of America,
and Mexico—as well as most countries in Central America and many South American countries.
The TX325 is the telemetry backbone for many data collection platforms (DCP) that use GOES.
The satellite transmitter can be integrated with a number of Campbell Scientific data loggers and
is an available communications option for many systems, serving a wide range of applications.
2. Precautions
lREAD AND UNDERSTAND the Safety section at the back of this manual.
lAlthough the TX325 is rugged, it should be handled as a precision scientific instrument.
lA proper antenna connection is required before transmission occurs. Failure to use a
properly matched antenna cable and antenna may cause permanent damage to the radio
frequency (RF) amplifiers.
lThe TX325 requires an active GPS antenna with a maximum gain of 25 dB. The TX325 will
supply 3.3 V to the active GPS antenna.
3. Initial inspection
lUpon receipt of the TX325, inspect the packaging and contents for damage. File damage
claims with the shipping company.
lCheck the ships with list to ensure all components are received.
TX325 Satellite Transmitter for GOES V2 1
