SECTION VI ORGANIZATIONAL MAINTENANCE PROCEDURES

TM 11-5985-371-12&P

4-13. General. This section covers the removal and replacement of components which --

you determined to be faulty during troubleshooting (table 4-2) or which you observed

to be damaged during performance of PMCS (table 4-1).

4-14 Removal, Repair, and Replacement of Terminating Resistor Box.

WARNING

If the antenna is connected to a transmitter, make certain the

radio operator has disconnected the antenna rf cable from the

transmitter before entering the roped-off radiation hazardous area

to replace the terminating resistor box.

a . Removal.

(1) After making certain the radio operator has disconnected the antenna rf

cable from the radio, disconnect the antenna wires

from the top of the balun

(2) Unsnap the end loops of the antenna wire from the four lanyards that con-

nect to the antenna stakes, and remove the four conductor splices (para 4-16).

(3) Untie the halyard

from the cleat

on the balun

and lower the

terminating resistor box

to the base of the mast

(4) Disengage the slide hook

from the eyelet on the halyard

(5) Disconnect the antenna wires

from the antenna connectors

on each

side of the terminating resistor box, by removing the conductor splice

from each

antenna wire and pulling the antenna wires through the terminating resistor box con-

nectors

b. Repair.

(1) Remove the 20 screws

that hold the front plate

to the terminating

. Using the multimeter measure the resistance of each power

resistor box

. The correct reading is 200 ohms.

resistor

(2) If defective, pull out the defective resistor(s)

; replace with a known

good resistor(s).

(3) Check the resistance between the outer connectors

. The correct

reading is 600 ohms.

(4) Replace the front plate

with the 20 screws

4-16