Grounding Requirements

TRANSMIT WILL RESULT WHEN THE OTHER END OF THE AUDIO CABLE (E) IS CONNECTED

TO EITHER AUDIO CONNECTOR ((G) OR (H)) OF THE RECEIVER-EXCITER. THIS COULD

DAMAGE THE AN/PRC-104(A).

d. Connect the audio cable (E), attached to the front of the amplifier-

power supply by a short chain, to the upper AUDIO RADIO connector (I)

located on the front of the amplifier-power supply. Connect the other end

of the AUDIO cable (E) to lower AUDIO connector (G) on the front of the

receiver-exciter.

e. Connect the RF cable (J) from the BNC connector (K) on the

amplifier-coupler to BNC RADIO-RF connector J201 (L) on the switching unit

(part of installation kit).

f. If a loudspeaker is to be used in the vehicle, connect an LS-454

loudspeaker to the lower AUDIO SPEAKER connector (F) on the amplifier-power

supply.

g. Connect an H-250/U handset to the upper AUDIO connector (H) on the

front of the receiver-exciter.

(The handset, or a second handset, may be

connected to the lower AUDIO SPEAKER connector (F) on the front of the

amplifier-power supply if the loudspeaker is not use.)

h. If the

AN/VIC-1(V)

system

is

to

be

used,

make

the

following

connections:

(1) Connect the intercommunication cable (part of the installation

kit) to connector J102 (M) on the rear of the amplifier-power supply.

Verify that the other end of the intercommunication cable is connected to

the audio frequency amplifier (part of AN/VIC-1(V)) as described in the

installation instructions. Connect the other end, if necessary.

(2) If the AN/VIC-1(V) is to be used for the retransmit capability,

connect the vehicular VHF FM radio power cable to connector J103 (N) on the

rear of the amplifier-power supply.

i. If a parallel radio set is to be used, connect its power cable to

connector J103 (N) on the rear of the amplifier-power supply.

j. If the dipole antenna is to be used in place of the whip antenna

(refer to paragraphs 4b(2)(a) and (b) for antenna comparison), connect the

dipole RF cable to the dipole antenna adapter. Connect the dipole RF cable

with adapter to connector J203 (O) on the rear of the switching unit (part

of the installation kit).

6.

GROUNDING REQUIREMENTS. For

proper operation, the AN/GRC-213 must be

properly grounded. Jumper cables

with quick-release connectors (Figure 19

(P)) are provided on the rear

of both the receiver-exciter and the

amplifier-power supply.

Connect

the grounding jumpers to the jumpers

attached to the upper tray of the

mounting base (part of the installation

kit).

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