transmitter while you unhook one end of the neck strapfrom the breastplate. Fold the transmitter yoke flat,being careful not to put a sharp bend in the transmittercord.5. Wrap the neck strap around the coil and theheadband two or three times and snap the end back onthe breastplate; then fold the mouthpiece up against thejunction box. You now have a neat, compact package forstowage, as shown in figure 4-5.6. Put the phone into the box or hang them on thehook provided. Be careful not to crowd or jam the leads.Headset phones should always be unplugged whenthey are not in use. If they are left plugged in, theearpieces will pick up noise and carry it into the circuit.Never place the phones on the deck. Not only is itpossible that someone may step on them, but decks aregood conductors of noise, which can be picked up by thephones.THE HANDSETThe handset telephone shown in figure 4-6 is held inone hand with the receiver over one ear and thetransmitter in front of the mouth. A button, located onthe bar connecting the transmitter and the receiver, ispushed down for talking. (The button must also bedepressed [pushed down] to listen.) (NOTE: If thebutton is held down at other times, all of the noise at thetalker’s station will go throughout the circuit and makeit difficult for other talkers on the line to understand eachother.)When not in use, the handset telephone is held on abracket on a bulkhead with a lever or spring attachmentthat keeps it from being jarred loose. When you replacethe handset in its bracket, be sure it is secured so that itcannot fall to the deck and be damaged.REVIEW 2 QUESTIONSQ1. True or False. The mouthpiece and earpiece of asound-powered phone are interchangeable.Q2. Describe the reason why you pick the headsetphones up as a whole unit.4-4Student Notes:Figure 4-5.—Coiling completed.Figure 4-6.—Handset.Figure 4-4.—Coiling the lead cord.
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