bca TRACKER4 Manual Del Propietário página 17

Searching
Trackers operate using the 457 kHz international standard frequency.
It is fully compatible with all avalanche transceivers adhering to this
standard.
When searching, keep the Tracker at least 20" (50 cm) away from
electrical equipment, including cell phones and video cameras.
Turn all non-essential electrical equipment off if possible.
The search process includes four phases: the signal search, the coarse
search, the fine search, and the pinpointing/probing phase (Figure F).
Figure F
SIGNAL
SEARCH
> 40 m
20 m
20 m
COARSE
SEARCH
3–40 m
FINE
SEARCH
< 3 m
Signal Search: The signal search refers to the process of establishing a
search pattern and looking for a signal. The search pattern will be defined
by the victim's last seen area, the size of the slide, and the number of
searchers. Refer to Figure G to establish a signal search pattern. If the
slide is less than 40 meters wide, the signal search path will be directly up
or down the center. If the victim's last seen area is well defined, the signal
search will follow a direct path along the fall line (up or down) from this point.
Objective: Locate signal
• If no "last seen area," search entire path
• Rotate Tracker back and forth horizontally
• Max 40 m between searchers or switchbacks
40m
Objective: Move quickly to 10 m, slowly to 3 m
• Follow general direction of center 3 lights
• Make sure distance readings are decreasing
• Slow down at 10 m
Objective: Locate smallest distance reading
(strongest signal)
• Use Tracker close to snow surface
• Confirm lowest distance reading by "bracketing"
• Begin probing at lowest distance
Operating Instructions
20 m
17