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Commercial marine radios - cont
Figure 2-5.  Army Radio Power Supply PP-6224 A/U Controls and Indicators (Barge 1)

TM-55-1930-209-14P-12 Water Purification Barges (NSN 1930-01-234-2165) Lighting System Manual
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TM 55-1930-209-14&P-12 (4) Turn VOLUME ON/OFF control clockwise to mid-position on dial. (5) Turn squelch control fully counterclockwise. (6) Set channel selector switch to desired position. (7) Turn SQUELCH control clockwise until background noise just disappears. (8) When message is received, adjust VOLUME/ON/OFF control to desired listening level. b. Perform the following to transmit messages to another station on the same frequency: NOTE Before  transmitting,  listen  to  channel  to  be  used  to  make  sure  it  is  not  being  used.    Make  sure external VHF antenna Is connected to receptacle on top of unit. (1) Set HI-LO power switch to desired setting. NOTE Use low power setting when communicating with stations within 100 yd of location. (2) Speak  slowly  and  distinctly  Into  built-in  microphone  located  in  lower  left  corner  of  speaker  grille,  while pressing PUSH-TO-TALK button on side of walkie-talkie. (3) If using an external microphone, associated PUSH-TO-TALK button will activate walkie-talkie. 2-13  Shutdown procedures 2-13.1.  Army radio a. On Army radio (Figure 2-6), set LIGHT selector switch to OFF The LAMP and CALL control Indicators will go out. Then turn BREAKER-RESET power switch to OFF. b. On Army radio power supply (Figure 2-5), turn POWER ONIOFF switch to OFF The AC ON green light will go out. 2-13.2.  Marine radio a On marine radio (Figure 2-7), turn VOLUME control fully counterclockwise. b On marine radio power supply, set power switch to OFF. 2-13.3.  Walkie-talkies a. On walkie-talkie, turn VOLUME-ON/OFF control fully counterclockwise. b. Replace  walkie-talkie  In  battery  charger  receptacle  and  make  sure  red  light  next  to  it  goes  on  to  indicate continued charging of walkie-talkie.  If red light does not come on, make sure battery charger ON/OFF switch Is in ON position. 2-14  Operation under extreme conditions.  In cold weather a. Do not bend cables or cords suddenly. b. Keep radio operating.  If not possible, allow radio to warm up before using. c. Keep ice off antennas Exercise care not to damage antennas. WARNING Do  not  touch  Army  radio  antenna  while  radio  is  operating.    Antenna  contains  high  voltage  which  will seriously injure a person touching the antenna during transmissions. 2-12







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