switch, one mouthpiece, one chestplate assembly with
amplifiers. Figure 5-10 is an illustration of a type H-200/U
junction box provided with capacitors and terminal facil-
sound-powered telephone headset-chestset. This head-
ities, one headband assembly and neck strap, and one cord
set-chestset consists of two sound-powered receiver
assembly and plug. The receivers are mounted on the
units with protective shells and ear cushions, one sound-
headband; the transmitter is mounted on the chestplate.
powered transmitter unit with protective shell and a push
Figure 5-10.--The H-200/U sound-powered telephone headset-chestset.