User Guide

1.5 CHARACTERISTICS
The ACR/MINI B
2
TM
Beacon is an o-ring sealed battery operated unit. The beacon case, with its external
antenna is waterproof. The semiconductor circuits are mounted within the case assembly, which also contains
the battery power supply. An “ON-OFF” switch is installed on top of the Beacon, along with a light emitting
diode (LED) operation indicator. The Beacon may be stowed in any convenient place, mounted in a special
bracket aboard a vessel, or tied with its lanyard inside survival craft. The unit is completely waterproof.
The ACR/MINI B
2
TM
ILS Product No. 2763 also has an in-line speaker which emits an audio warble whenever
the Beacon is transmitting. The audio sound is identical to the signal being transmitted. This sound serves as an
ALERT that the Beacon is on and directly indicates that the Beacon is functioning.
ACR designed the MINI B
2
TM
ILS with an audible warble to help reduce the incidence of accidental activation.
The audible warble also allows you to self test your beacon more effectively. NEVER operationally test your
Class B EPIRB except as noted in Section 5.2 of this manual.
1.6 TECHNICAL DATA
Pertinent technical data is listed below:
ITEM CHARACTERISTICS
Frequency 121.5 and 243.0 MHz (simultaneous)
Power Output Minimum 75 mW on each frequency during 48 hours continuous
operation
Operating Life 48 hours minimum at -20°, (-4°F) longer in temperate climates
Battery Lithium battery, 12 year shelf life, 6 year replacement interval
(as per regulation)
Emission Type A3X
Modulation Downward sweeping tone between 1600 and 300 Hz at 2 to 4 sweeps
per second
Frequency .005% (Crystal controlled)
Stability
Operating -20°C to +55°C (-4°F to +131°F)
Temperatures
Activation Manual “ON-OFF” switch
Size 6.0" H x 2.6" W x 1.6" D (152mm x 66mm x 41mm) excluding
antenna
Weight 9.9 ounces (280 g)
Attachments Lanyards, Hanked and Wrist
Accessories ACR/MINI B
2
TM
Mounting Bracket,
(Optional) PN 9321