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Briartek ORCA TX-104 MOBI


Smaller isn’t always better, but many prefer the compact ORCA TX-104 over the size and form factor of our other ORCA Transmitters. The TX-104, while about two-thirds the size of our other transmitters packs the same great punch in terms of performance.

The TX-104 is capable of being programmed for operation in fresh and salt water, or in salt water only. In either case, after being fully submerged for 3-5 seconds, the strobe light activates and the TX-104 begins transmitting a distress signal to all receivers in range. The user-replaceable CR-123 battery allows for continuous transmission for over 24 hours once the transmitter has been activated.

The TX-104 is capable of being integrated into the work uniform or flotation device preferred by the user. As well, the TX-104 has been uniquely designed to be capable of being worn pendant style over the head.

Additional information

Weight .3 lbs
Dimensions 2 × 1.5 × .75 in


>> Size: 2.4” x 1.7” x 0.8”
>> Weight: 2.5 oz.
>> Frequency: 121.5 MHz
>> Battery: One (1) 3-volt CR123 lithium
>> Activation: Manual, fresh and salt water activated, and saltwater only activated
>> Safety light: 2.25 candella daylight visible

>> Size: 6.81” x 5.08” x 1.81”
>> Weight: 35 oz.
>> Frequency: 121.5 MHz
>> Current draw: (typical) 55 mA
>> RF sensitivity: 0.25 – 0.60 uV
>> RF input impedance: 50 ohms

Direction Finder Display
>> Accuracy: +/-5 degrees
>> Power Source: 12 – 36 VDC

Direction-Finding Antenna
>> Type: Phase Interferometer