bca Tracker2 Owner's Manual page 14

Operating Instructions
Shoveling
Shoveling is difficult and consumes the majority of time during an
avalanche rescue. Do not take shoveling skills for granted. For best
results, start shoveling just downhill of the probe (Figure G). Make
your hole is at least one "wingspan" wide. In burials deeper than one
meter, excavate downhill about 1.5 times the burial depth (this can be
determined by noting the depth marking on the probe).
Figure G
1.5 x
burial depth
Multiple Burials
Complex multiple burials are quite rare in recreational settings and
usually can be treated as a series of single burials. When more
than one transmitting victim is within the receive range of Tracker2,
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the multiple burial light will illuminate and stay solid. (Note:
this light can occasionally illuminate irregularly in the presence of
electromagnetic noise or when detecting older analog transceivers).
If the multiple burial light is illuminated and/or the Tracker2 displays
more than one distance and direction, then you probably have
several victims within your receive range. Stay in search (SE) mode,
and focus on the closest distance reading, attempting to engage that
signal in the center search light.
Once you are significantly closer to one signal than the other (in SE
mode), Tracker2 will "lock" onto that signal and mask out the others.
Once this signal is isolated, the Tracker will behave very similar to
how it does in a single beacon search. Once you have located the
first beacon, turn it off if you determine the conditions are safe. If you
have a clear signal, then begin the search here for the next victim.
If the multiple burial light is flashing consistently on and off, then there
are at least two victims in close proximity (within five meters of the
searcher). This may require a special technique.
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