EXTENDED REFERENCE GUIDE
BARRYVOX
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Search Tactics with Multiple Burials in Close Proximity
The interpretation of the acoustic signals is extremely important
in this situation. These must be interpreted in connection with
the distance readings.
Example: You hear three beeps and the distance reading
indicates 3.0. Therefore, the closest buried subject is max 3m
away from you, the second and the third buried subject are
max 3.0 +~50%, thus approx. 4.5m away from you.
Search Using Micro Search Strips
If you have multiple burials within an indicated distance of 10
or less, search using micro search strips.
1. Locate the first buried subject.
2. Back up until the display shows 10 and search the area in
front of you in parallel search strips.
3. As soon as the distance indication reads 10, you have
reached the side of the search strip. Advance 2 to 5 meters
and return on the next parallel search strip until this search
strip ends as well (distance indication > 10).
4. Maintain the orientation of the transceiver during this phase
and concentrate on the increase or decrease of the distance
indication as well as the volume of the analog tones.
5. At each point with a lowest distance reading, you leave the
micro search strip pattern to fine search the buried subject
through bracketing. At a low point of distance indication on
a micro search strip, always check by bracketing behind and
in front of you for further buried subjects. As burial depth
is unknown, every low point in distance indication must
be checked! Once the subject is located, you return to the
location where you left off in order to continue the pattern.
6. The more buried subjects there are and the closer these are,
the tighter the micro search strip grid on the potential search
area should be. As a rule of thumb, the search strip width
should be between 2 and 5 meters.
7. Continue the pattern, until the distance reading in an entire
strip never drops below 10. Then revert to the signal search
pattern and search the rest of the avalanche. As long as the
signals of the buried subjects you have just found in the mi-
cro search strips are audible, only apply 50% of the regular
signal search strip width. Exit alternative search mode and
use full search strip width when those signals have faded
out by distance.
The avalanche probe is very helpful in locating multiple buried
subjects in close proximity.
