Description of Minor Assemblies

TM 11-6625-1635-12

terminated with an insulated alligator clip at one

a. Power Supply PP-3931/FLR-9(V). The

PP-3931/ FLR-9(V), or equal, is required to

end and a solderless terminal lug at the other

S upply the dc power to the AN/ARC-134 under

end. The alligator clip insulators are ap-

test.

p r o p r i a t e l y marked to indicate the required

i n p u t voltage connection. In the unmodified

b . 5-Volt. A l t e r n a t i n g C u r r e n t S o u r c e

equipment, t h e third alligator clip insulator

(maintenance kit unmodified only). An

alternating current (ac) power source providing

(black] is used as a ground connection and is

5 volts (10 percent) at 1.0 ampere is required

u n m a r k e d . In the MK-1004/ARC modified. a

for the lighting circuits of the test panel and the

protective diode has been added to prevent

radio control.

dam age from reverse polarity hook-up.

c. Radio

Set

AN/ARC-l34. T h e

1-9. Description of Minor Assemblies

AN/ARC-134 is required for use with the

Special features of some of the minor assemblies

maintenance kit.

are given below (fig. 1 -3).

d. Other Equipment. A d d i t i o n a l e q u i p m e n t

a. Fuse Holder 700061-0001. The fuse

r e q u i r e d for use with the maintenance kit is

h o l d e r , with self-contained fuse,

used

listed below.

whenever an external signal generator is con-

(1) Signal Generator AN/USM-44.

n e c t e d to the maintenance kit antenna con-

(2) Wattmeter, Radiofrequency

nector. T h e f u s e h o l d e r p r e v e n t s p o s s i b l e

AN/URM-43A.

damage to the signal generator through ac

(3) Signal Generator AN/URM-127.

cidental keying of the AN/ARC-134 trans-

( 4 ) Multimeter TS-352B/U.

mitter.

(5) Microphone M-52A/U (maintenance

b . Radio Frequency Detector. T h e r a d i o

kit unmodified only).

frequency (RF) detector is used to observe

( 6 ) Headset, Electrical

H-216/U

with

m o d u l a t i o n during adjustments to the RF ex-

Cord

CD-307

(maintenance

kit

unmodified

driver

stages

the

citer/amplifier

only).

AN/ARC-134

transmitter

circuits.

(7) Coaxial Adapter UG-201/U.

c. Attenuator. The attenuator is connected to

( 8 ) Capacitor, 50 microfarads (f). 25

the external signal generator output to provide a

v o l t s direct current (dc), Sprague Type TL-

proper signal input level to the AN/ARC-134

1200, or equal.

during test procedures.

( 9 ) C o a x i a l C o n n e c t o r U G - 8 8 / U (two

d . T u n i n g T o o l . The tuning tool is used

required).

w h e n e v e r it is necessary to adjust the power

( 1 0 ) RG-58 coaxial cable (as required).

amplifier grid and plate coils in the AN/ARC-

134 transmitter circuits.

1-11. Use of Term Hertz

e. Adapter. The adapter is used to connect

The National Bureau of Standards has officially.

the external signal generator, oscilloscope, and

adopted the term Hertz (Hz) to replace cycles

l o a d wattmeter during transmitter test or ad-

per second (cps). The chart below provides the

justment procedures.

equivalents of the unit/quality terms and the

l i s t of approved abbreviations that are used

1-10. Additional Equipment Required

t h r o u g h o u t the manual.

The following equipment is not supplied as part

of the maintenance kit, but is required for use

with it.

1-11