Section II. INSTALLATION INSTRUCTIONS

TM 11-5820-509-12

CX-8393/PRC-47 and CX-8394/PRC-47 are coiled inside

and forward DD Form 6 (para 1-3 b).

the cover /fig. 2-2). Release the hinged plate by pressing

b. Check the packing list against the equipment

the push-to-release fasteners.

received to assure that all equipment is available. If a

(5) Remove individual items from the compartments

packing list is not available, check the equipment received

within the CY-3700/PRC-47 as required.

against paragraph 1-6. Report all discrepancies in

c. Unpacking Procedures, Battery Electrolyte Carton.

accordance with the instructions contained in paragraph

This carton is marked KIT, ELECTROLYTE FILLING

1-3 b or c. Always place the equipment in service if it is

FSN 5122-000-1069. Carefully open the carton and

in operating condition even though a minor inventory part

remove its contents. Consult TM 11-6140-208-15 for

is missing.

maintenance instructions, battery filling procedures, and

c. Verify that all current MWO's have been installed in

charging practices to be observed.

the equipment when received. The MWO number will

appear on the front panel of the radio set near the

WARNING

nomenclature plate.

Potassium hydroxide electrolyte is highly

NOTE

corrosive to aluminum and other metals

used in Radio Set AN/PRC-47. Never

Current MWO's that are applicable to

stow an activated battery in the CY-

AN/PRC-47 are listed in DA Pam 310-

3700/PRC-47 case. A personal injury can

result from spilled electrolyte; flush

d. Consult the latest issue of DA Pam 310-4 and its

spilled electrolyte with clear water.

most recent changes to assure that the latest editions of all

applicable maintenance literature are available.

2-5. Checking Unpacked Equipment

(Equipment issue by depots may have been in stock for

a. Inspect the equipment for damage that may have

some time and may contain superseded manuals.)

occurred during shipment. If damage is evident, complete

Section II. INSTALLATION INSTRUCTIONS

2-6. Tools, Test Equipment, and

the receiver-transmitter is level and stable on the ground.

Materials Required

NOTE

The tools and test equipment necessary for installation of

If the whip antenna is to be used,

the AN/PRC-47 are Multimeter AN/URM-105 (TM 11-

perform (b) and (c) below. If not,

6625-203-12) and Tool Kit, Radio Repair TK-115/G.

perform (4) below.

2-7. Assembly of Component Items

(b) Unwind the eight radials (two per leg) from the

Receiver-Transmitter, Radio RT-671/PRC-47 is packed

spools that form an integral part of each leg (fig. 1-6) and

with all subassemblies and parts installed and ready for

connect the short (terminated) end of each radial to the

operation. Antennas and other accessories must he

ground terminals (fig. 3-1) at each end of the receiver-

connected to the RT-671/PRC-47 before operation.. The

transmitter front panel.

procedures for assembling these individual components to

(c) Extend the radials to form a pattern around the

the receiver-transmitter are detailed below.

unit similar to the one shown in figure 1-7.

a. Receiver-Transmitter, Radio RT-671/PRC - 47.

(4) For the vehicle or fixed station configuration,

(1) Remove Cover, Panel CW-647/PRC-47 by means

place the receiver-transmitter on a flat surface. If no flat

of the six fasteners and secure it to the side of the

surface is available, perform (3) (a) above.

receiver-transmitter case (fig. 1-6).

WARNING

(2) Be sure the POWER/LIGHTS switch (fig 3-1)

Do not connect any power cable to

on the Receiver-transmitter control panel is at OFF/OFF.

Receiver-Transmitter,

Radio

RT-

(3) For the portable configuration, perform the

671/PRC-47 until after the antenna has

following:

been connected to the equipment. High

(a) Remove Legs, Electrical Equipment MT-

voltage can be present at the ANTENNA

2786/PRC-47 from the canvas case and attach the legs to

terminal that could cause personal injury

each end of the receiver transmitter. Adjust the legs

or death

individually so that

2-4