Use of LS-671

TM11-5820-890-10-8

4.11c. Use of LS-671

SOURCE

Loudspeaker, LS-671, is a part of selected installation kits. (See

SB 11-131-2 for a listing of individual kits.)

PURPOSE

The primary purpose of the LS-671 is to allow for remote transmitting

and receiving of voice communications to the length of the LS-671

cable (CX-13292) being used. Cables are available in lengths varying

from 3 to 100 feet.

FUNCTIONS

At the LS-671, these functions can be performed (see Figure 4-28,

below for controls available):

Radio can be turned ON and OFF by use of the power switch.

By connecting a handset to the LS-671 (J2), the radio can be

keyed and messages transmitted.

Net traffic can be monitored by proper adjustment of the

loudspeaker volume control.

Figure 4-28. Loudspeaker, LS-671

LIMITATIONS

The remote capabilities of the LS-671 complement rather than replace

those of the RCU. Where the RCU supports remote operation up to 4

KM, the LS-671 is limited to 100 feet at most. Also, the LS-671

provides for only the most basic radio control functions.

ADVANTAGES

The LS-671 is extremely useful for command posts and fire control

centers where operations personnel are performing other than radio

operator functions. The limited remote capability of the LS-671

enables such personnel to operate the radio from their work station

with minimum effort or movement, Only occasionally is it necessary for

a crewmember to move to the radio front panel to make control setting

changes.

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