NOTE: There are no user serviceable items inside the PLB. DO NOT OPEN THE PLB UNLESS TO
DISABLE IN CASE OF FAULTY ACTIVATION if the OFF button does not stop the transmission.
Power is provided by self contained long life batteries with a five-year recommended replacement
cycle. See Factory Authorized Service Center for replacement.
Battery replacement includes servicing the PLB by replacing all o-rings, testing the water seal and the
electronic diagnostic properties.
Always refer all long life battery replacement and other PLB service to a factory authorized service
center.
For the nearest location of an authorized ACR service center, call 1-800-432-0227 (toll free) or visit
our website at www.acrelectronics.com
4.2
The TerraFix™ 406 GPS contains 2 lithium battery packs that are non-hazardous. They also meet
the UN Classification of Lithium Batteries for Shipment as "Non – Dangerous Goods".
SECTION 5 - THE SEARCH AND RESCUE SYSTEM
5.1
General Overview
The TerraFix™ 406 GPS Beacon provides distress alerting via radio transmission on 406 MHz to
satellites of the COSPAS-SARSAT network and to the GEOSAR network that includes GPS latitude
and longitude coordinates when GPS data is present.
The message transmitted by the TerraFix™ 406 GPS is unique for each PLB, which provides
identification of the transmitter through computer access of registration files maintained by the
National Oceanic and Atmospheric Administration or other national authority. Remember, if your
PLB is not registered, SAR Authorities do not know who you are, or how to contact anyone who
might know anything about your situation (Refer to section1).
Once the TerraFix™ 406 GPS signal (406 MHz) is relayed through the COSPAS-SARSAT and/or
GEOSAR network alert, Search and Rescue (SAR) forces determine who is closest, then track the
signal using the 121.5 MHz homing frequency which assistant intermediate and short-range location.
5.2
Satellite Detection
5.2.1 The TerraFix™ 406 GPS transmits an encoded phase modulated radio signal to the satellite portion
of the COSPAS-SARSAT System. The system was developed and implemented by the COSPAS-
SARSAT Partners (Russian Federation, Canada, France and the United States).
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