One of the disadvantages of the facemask was the missing communication device. DESCO now has a system that can be factory installed in all DESCO masks and may be used with the DESCO Telephone . A Mylar transceiver and two 3-way binding posts are mounted at the bottom of the faceplate to allow maximum field of vision. A single, sealed earphone is attached to the head-harness with O-rings so that it can be adjusted to fit over the divers ear. The earphone cable attaches to the binding posts using 90 banana plugs to permit the lowest possible profile. If the earphone should be absent or inoperative, the diver can still communicate using the transceiver located inside the faceplate. Courtesy of DESCO.

 

Here you see a two diver telephone which delivers seven watts of audio output. It is normally powered by a 12 volt commercial or sportsman's battery. However (at some reduced power ) it can also be used with a 9-volt transistor battery. It is not harmed by an accidental reversal of polarity. An A.C. power jack is also provided to use a A.C. Adapter ( available at electronics supply stores) where 110 VAC is available. Binding posts are provided for an external speaker, tape recorder, and headphone/boom mike. Separate volume controls for the divers and tender permit adjustment for optimum quality of communications. This telephone can be used with
all helmets and masks equipped for 2- wire communication. Courtesy of DESCO.

A French Comax radio in watertight case.