Fox 40 Whistle
The whistle of choice for professional sports and Olympic competitions. It has a patented 3 chamber design and no "pea" to stick and impede sound. The harder you blow, the louder the sound.
CODE OF COMMUNICATION RECOMMENDED
The whistles must be done vigorously and leaving enough separation between them.
- A whistle : Indicates Stop. Maneuver completed.
- Two whistles : Indicate LI-BRE. Free rope to reach the base of a rappel.
- Three whistles : Indicate DES-CEN-DER. Necessary to rope in a releasable abseil because not reach the base, or the member who is falling has been blocked.
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