Navigation To A Target; Navigation Mode - UTC UDI-28 User Manual

Navigation to a target

UDI-28™ can be used to track an SOS beacon or a Homing beacon. A homing beacon transmits a
homing signal from the boat unit on a specific dedicated frequency. An SOS beacon transmits a homing
signal on a specific frequency, received on all networks used with UDI-28.
Navigation using the UDI-28™ can be done only while the diver or beacon is moving in relation to each
other. In other words, the UDI-28™ diver, the beacon, or both must be moving, since the navigation
beacon relies on the Doppler Effect.
Navigation method for tracking:
Correct navigation as you dive showing the adjusted direction of the target beacon on the UDI-28.
Choose a random initial direction to start diving, and then adjust as you go.
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1. Starting location of diver
2. Course adjustments
To enter Navigation mode:
 From the UDI-28™ Main menu, select Navigation and press Enter.
To exit the Navigation mode and return to the Main menu, select Main, and press Enter.

Navigation mode

Navigation is used to dive to a homing beacon, or to a unit transmitting an SOS signal to provide
assistance.
1. From the Navigation menu,
select SOS track to track an
SOS beacon, or Homing
track to track a Homing
beacon.
2. Press Enter.
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2
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3. Beacon location
NAVIGATION
1. SOS track
2. Homing track
3. Mask Homing
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