Operational Notes - ACR Electronics MINI B2 CLASS B PERSONAL EPIRB Product Support Manual

You can verify that your EPIRB is actually transmitting by turning it "ON" near an FM radio tuned to 99.5
MHz. The radio will receive the signal and will broadcast the familiar "warble" through its speakers if the
EPIRB is transmitting properly. Conduct this test only during the first five (5) minutes of each hour as
indicated above.
5.3

OPERATIONAL NOTES

The EPIRB is designed to operate best when placed on a flat surface or while over water at sea. An operational
transmission on land should be conducted in an area free of obstructions, which could absorb RF energy and
limit radiation patterns.
Position the antenna straight up (perpendicular to ground) and not pointing toward the receiving station. Note
that the radiation field null occurs directly off the end of the antenna.
Maintain a visual path where possible between the Beacon and the receiver, since beacons characteristically
transmit "line of sight."
The Beacon transmits on 121.5 and 243.0 MHz simultaneously.