1. UDI28SYSTEM
The U-28 system has been designed to pro-
vide communication protocol in a very limited
bandwidth (~35 KHz) while maintaining diver
safety and medical limitation.
The hardware provides 3 levels of transmis-
sion, enabling the diver to almost triple the
operational range. The architecture includes
DSP, digital sensors, depth transducer, com-
pass and accelerometers.
The U-28B has an “active” acoustical antenna
which contains special electronics that reduc-
es the level of underwater noise, thus increas-
ing the signal to noise ratio.
The U-28 wrist unit can also be configured
with an extended battery and left underwater
in a passive mode for 30 days or longer, ideal
for caching equipment and/or returning to a
set location underwater. By using the remote
SOS activation from another wrist unit, a
diver can navigate directly to the underwater
device’s location.
CRITICAL MISSIONS
SPECIAL FORCES, POLICE,
COAST GUARDS, RESCUE
UNITS, TECHNICAL DIVERS
UDI 28
FEATURES
U N D E R W A T E R
T E C H N O L O G I E S C E N T E R
Primary Business Address
8 Omarim, St., Baran Bldng, POB
3003, Industrial Park, Omer, Israel
84965Phone: +972 722 153 153
E-mail: golan@utc.co.il

2. Technical Specifications
WRISTUNITBOATUNIT
U N D E R W A T E R
T E C H N O L O G I E S
C E N T E R
Primary Business Address
8 Omarim, St., Baran Bldng, POB
3003, Industrial Park, Omer, Israel
84965
Phone: +972 722 153 153
E-mail: golan@utc.co.il
Up to 28 divers in one network.
Diver to diver text messaging, up to 28 text messages.
Diver to Boat Unit and vis-versa text messaging.
SOS signals and tracking to diver in distress; or navigation to a
device with up to 1500m range and 70 m depth.
Remote pinging signals from Boat Unit to diver in order to pro-
vide direction to Diver.
Transmission of small footprint SONAR imaging through the
Diver communicator.
Transmission from Boat unit to air
(RF communication module*).
*In some cases (as it may be appropriate) to use encryption.
*RF module (requires upgrade kit).