Abstract: An improved pony bottle bracket that is light weight, compact, simple to use, and facilitates a quick and easy set-up is disclosed. A push button latch enables a diver to quickly disconnect the pony bottle from the main bottle. The pony tank bracket and base unit bracket are mounted by use of a belt and adjustable band straps. The locking mechanism is self-contained, thereby eliminating or minimizing the use of separate components (e.g., no clevis, hitch, cotter or quick release pins) which may be lost. The bracket also eliminates or reduces the use of any items which may entangle the diver or entangle other objects in the diver's surroundings (e.g., no string, cord, chain or lanyards). The bracket is bidirectional (e.g., reversible) such that the top bracket mount may be rotated between about 0 and 180 degrees.

Abstract: An improved pony bottle bracket that is light weight, compact, simple to use, and facilitates a quick and easy set-up is disclosed. A push button latch enables a diver to quickly disconnect the pony bottle from the main bottle. The pony tank bracket and base unit bracket are mounted by use of a belt and adjustable band straps. The locking mechanism is self-contained, thereby eliminating or minimizing the use of separate components (e.g., no clevis, hitch, cotter or quick release pins) which may be lost. The bracket also eliminates or reduces the use of any items which may entangle the diver or entangle other objects in the diver's surroundings (e.g., no string, cord, chain or lanyards). The bracket is bidirectional (e.g., reversible) such that the top bracket mount may be rotated between about 0 and 180 degrees.

Abstract: A signal of bandwidth F.sub.max is unambiguously transmitted over a datalink having a bandwidth less than F.sub.max by subdividing the signal into a plurality of subspectrums and bandshifting the subspectrums greater than the datalink bandwidth to baseband. Each bandshifted subspectrum is uniquely encoded using a different pilot tone which can be detected by the receiver to decode the receive signal and unambiguously recover the narrowband spectrum components.