Removal and Replacement of Balun.

TM 11-5985-371-12&P

4-15. Removal and Replacement of Balun.

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 balun.

a. Removal.

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

cable from the radio, disconnect the rf cable connector

from the balun connector

on the balun

at the base of the antenna mast

(2) Disconnect the antenna wires

connected to the antenna wire connectors

on top of the balun

(3) Remove and retain the four wingnuts

and separate the balun

and

balun'clamp

from the mast

b. Replacement.

(1) Place the balun clamp

and balun

on the mast

; replace the four

and balun clamp. Before tightening

wingnuts

securing the balun to the mast

the wingnuts

, slide the balun and balun clamp up or down the mast until the

balun is 6.5 feet from ground level. Secure the four wingnuts

(2) Connect the antenna wires

to the antenna wire connectors

on top of

the balun.

(3) Connect the cable connector

to the rf connector

on the balun.

(4) Notify the radio operator to reconnect the antenna rf cable to the radio.