ACR Electronics ENGLISH Product Support Manual page 6

1.3.6 Because most of the search and rescue forces presently are not equipped to home on the 406 MHz
Satellite signal, homing must be accomplished at 121.5 MHz.
1.3.7 The 406 PLB and GyPSI™ 406 PLB are Class 1, Personal Locator Beacons.
GEOSAR SATELLITE COVERAGE
FIGURE 1
SAR SATELLITE ORBITS
FIGURE 2
3
Y1-03-0169 Rev. B