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EXTENDED REFERENCE GUIDE
BARRYVOX
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Analog Search Tone
Interpretation of the Analog Sound:
Just as in traditional analog transceivers, the analog tone is
received by only one antenna. The change in the distance in-
dication can therefore deviate from the change in tone volume.
Depending on the relative orientation of the transmitter to the
receiver, it is possible for the tone volume and the distance
indication to decrease while approaching the buried subject.
The volume of the analog tone is automatically adjusted by the
transceiver. Therefore, the volume of the tone cannot be used
to tell if you are moving closer or further away from the buried
subject. However, an increase or decrease in distance can be
easily derived from the distance indication.
“Sound Check”
The analog tone is very useful and important to easily and
reliably determine the number of buried subjects: Counting the
number of beep sound sequences gives the number of buried
subjects. Use this “sound check” to easily and reliably deter-
mine the number of buried subjects, between 1 and 3+.
1. Is it possible that I hear only one buried subject?
No: at least 2.
2. Is it possible that these are only two buried subjects?
No: at least 3
3. Only for advanced rescuers:
Is it possible that these are only three buried sujects?
No: More than 3.
The number of buried subjects needs to be interpreted in
conjunction with the distance indication / sensitivity level.
Example: You hear three beeps and the distance reading shows
3.0. Therefore, three buried subjects can be expected within a
radius of approx. 4.5m (indicated di ~50%). Always
apply the “Sound Check” at the distance indication of 10 and
3.0!