PREPARATION FOR USE
5. Remove the whip antenna from the transit case
TRANSPORTATION AND STORAGE (Figure
6. Attach the whip
antenna to antenna
The radio set and standard accessories are
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
equipment is complete and inspect the equipment for
any damage incurred during incurred during shipment.
Perform the following test procedure for initial
checkout of the radio set in an operating environment.
INSTALLATION AND SETUP (Figure 1-4).
If' any of the results are abnormal refer to the
troubleshooting procedure in chapter 4. Refer to figure
Installation and setup of the
radio set is
2-1 for location of controls and indicators.
accomplished as follows.
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.
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.
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
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
2. Transmit, using a handset
communicate with base station at this test frequency.
Presence of a sidetone indicates transmission is