RHOTHETA User Manual Personal Locator Beacon RT-B77 HELB
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3.2 Safety - Batteries
Use only batteries that are destined for this product.
Keep batteries away from children.
Do not disassemble batteries, and do not insert them in the wrong orientation. Do not
expose batteries to liquids, moisture, fire, or extreme temperatures.
4 Use, Characteristics
4.1 Use
The RT-B77 HELB is a microprocessor-controlled personal locator beacon (PLB) transmitting
on the international civil distress frequency 121.500 MHz. The RT-B77 HELB is designed for
professional use under rough conditions. It is optimised for MOB (man over board) applica-
tions.
4.2 Characteristics and Special Features of the RT-B77 HELB
•The RT-B77 HELB is a light weight device offering high wearing comfort.
•Easy to use and extremely reliable in operation
•It features a self-test to check all important functions.
•Automatic activation by water immersion sensor
•Activation can be coupled to inflating life west with pull-away-contact.
•Very large transmitting range through very high output power (up to 2 W)
•Long-time transmitting endurance through microprocessor-controlled power-
management
•Functional and operating feedback by LED and built-in speaker
•Status messages in clear text via integrated speaker
•Beacon-ID programmable by user (factory setting: serial no.)
•Beacon-ID transmitted as digital code.
•Beacon-ID transmitted as clear voice message (AM).
•Pre-selectable test/training frequency
ATTENTION
The battery replacement should be performed only by RHOTHETA Elektronik
GmbH or an authorized service station. Otherwise the warranty claim will expire.
WARNING
For use on water, the RT-B77 HELB shall be fixed on a life jacket, a survival suit, a
life raft or other qualified personal safety equipment.