Section II. PREPARATION FOR USE

TM 11-5820-919-12

SECTION II

PREPARATION FOR USE

5. Remove the whip antenna from the transit case

1-22.

TRANSPORTATION AND STORAGE (Figure

and assemble.

1-1).

6. Attach the whip

antenna to antenna

shock

1-23.

The radio set and standard accessories are

mount.

contained, transported and stored in Radio Set Case CY-

8291/PRC-104 (transit case)j The transit case should

7. Attach the antenna shock mount (with whip

normally be kept closed. To unpack the equipment,

antenna attached) to the amplifier/coupler antenna

unfasten the, four latches and remove the transit case

socket. The radio is now ready for initial checkout.

cover. Each of the individual pieces of equipment fit in a

molded space. as shown in figure 1-1 Check that the

1-26.

INITIAL CHECKOUT.

equipment is complete and inspect the equipment for

any damage incurred during incurred during shipment.

1-27.

Perform the following test procedure for initial

checkout of the radio set in an operating environment.

1-24.

INSTALLATION AND SETUP (Figure 1-4).

If' any of the results are abnormal refer to the

troubleshooting procedure in chapter 4. Refer to figure

1-25.

Installation and setup of the

radio set is

2-1 for location of controls and indicators.

accomplished as follows.

1-28.

PRELIMINARY SETUP.

CAUTION

1. Connect a handset to the radio set.

Press relief valve button to equalize pressure before

unlatching transit case.

2. Set the radio set controls as follows.

1. Unfasten the 4 latches securing the cover to the

a. MODE to V-TR

transit case and remove cover

b. ANT/SEL to whip connection position

2. Remove the receiver/esxciter - amplifier/ coupler

combination from the transit case

FREQUENCY-KHZ to 02,221.2 (USB)

3. Remove one of the three (3) battery packs from the

d. VOLUME - Desired listening level.

(If a

transit case. For initial battery filling. refer to paragraph

clicking sound is heard, this indicates that the battery

4-36. For battery charging, refer to paragraph 4-42.

voltage is low (20or less) and should he replaced or

recharged. Refer to paragraph 4-42.

WARNING

1-29.

TEST PROCEDURE.

Do not store or transport batteries in the closed transit

case. or in a closed environment for extended after they

1. Momentarily press the handset PTT switch.

are activated (filled with electrolyte). An explosive

Verify that the handset emits a 1-kHz sidetone which

mixture of hydrogen and air may result.

terminates in less than 12 seconds. This indicates the

result.

automatic antenna tuner is operating normally. Failure of

the antenna to tune properly is indicated by continuous,

4. Attach the activated battery pack to the bottom

rapid beeping in the handset (fault tone)

of the receiver/exciter amplifier/coupler units using the

latches.

2. Transmit, using a handset

If' possible,

communicate with base station at this test frequency.

Presence of a sidetone indicates transmission is

1-14