User's Manual

Y1-03-0343 Rev. T1 Company Confidential 11
Activating Your Beacon (continued)
Activation with GPS
When your unit is activated, the GPS receiver will turn on,
search to find your Latitude (LAT) / Longitude (LON), and
incorporate it into your 406 MHz signal.
For the first 6 hours after beacon activation, the internal
GPS will start up every 30 minutes, search to find your
LAT/LON, and incorporate it into your next 406 MHz signal.
If for any reason the internal GPS cannot update your
LAT/LON, your last position will be used for the next four
hours - at that time, the green LED will stop blinking and
the red LED will flash once every 5 seconds until new GPS
data is obtained. Between 6 hours and the end of
operating life (minimum of 24 hours), a GPS location
update is attempted every 60 minutes.
GPS receiver orientation
When activated, it is critical that you do not cover the beacon with any body part, water,
clothing, etc. The GPS receiver is located under the bottom portion of the case where it is
outlined with the text “GPS, Give Clear View to Sky”.
To ensure optimum performance of the GPS receiver, the beacon needs to have an
unobstructed view of the sky. Avoid submerging the GPS receiver in water if possible. Water will
shield and inhibit the GPS receiver and may cause difficulties obtaining your GPS coordinates.
Avoid leaning over the beacon to view blinking LEDs (or blinking LEDs and/or the screen on the
PLB-425 model) as you may shield GPS reception.
Red Flashing Light =
Sending 406 MHz signal
without GPS coordinates
Green Flashing Light =
Sending 406 MHz signal with
GPS coordinates