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ANTENNA GROUP OE-254/GRC (NSN 5985-01-063-1574)

TM 11-5985-357-13 TECHNICAL MANUALOPERATOR S, ORGANIZATIONAL, ANDDIRECT SUPPORT MAINTENANCE MANUALFORANTENNA GROUPOE-254/GRC(NSN 5985-01-063-1574) This publication is required for official use or foradministrative or operational purposes limited to US Government Agencies. Other request forthis document must be referred to Commander, US ArmyCommunications-Electronics Command and Fort Monmouth,New Jersey NOTICE - Destroy byprevent disclosure of contents method that willreconstruction of theHEADQUARTERS, DEPARTMENT OF THE ARMY1 FEBRUARY 1991TM 11-5985-357-13 WARNINGA hazardous condition exists during ANTENNA erection and injuries have been attributed to the pointed ends of the exposedantenna elements. Take the following precautions:Attach ANTENNA tip caps to all exposed elements of the the tip caps with waterproof the ANTENNA tip caps have been installed, place a warningsignal (Chem light, guard, or other signal) near the antennaelements during assembly, disassembly, or when the antennaelements are within reach, particularly at the ANTENNA elements if the ANTENNA is lowered on helmet, safety glasses (NSN 4240-00-052-3776), and glovesbefore assembly and erectio

b. Report of Item and Packaging Discrepancies. Fill out and forward SF 364 (Report of Discrepancy (ROD)) as prescribed in AR 735-11-2/DLAR 4140.55 SECNAVINST 4355.18/AFR 400-54/MCO 4430.3J. c. Transportation Discrepancy Report (TDR) (SF 361). Fill out and forward Transportation Discrepancy Report (TDR) (SF 361) as prescribed in AR 55-38/

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Transcription of ANTENNA GROUP OE-254/GRC (NSN 5985-01-063-1574)

1 TM 11-5985-357-13 TECHNICAL MANUALOPERATOR S, ORGANIZATIONAL, ANDDIRECT SUPPORT MAINTENANCE MANUALFORANTENNA GROUPOE-254/GRC(NSN 5985-01-063-1574) This publication is required for official use or foradministrative or operational purposes limited to US Government Agencies. Other request forthis document must be referred to Commander, US ArmyCommunications-Electronics Command and Fort Monmouth,New Jersey NOTICE - Destroy byprevent disclosure of contents method that willreconstruction of theHEADQUARTERS, DEPARTMENT OF THE ARMY1 FEBRUARY 1991TM 11-5985-357-13 WARNINGA hazardous condition exists during ANTENNA erection and injuries have been attributed to the pointed ends of the exposedantenna elements. Take the following precautions:Attach ANTENNA tip caps to all exposed elements of the the tip caps with waterproof the ANTENNA tip caps have been installed, place a warningsignal (Chem light, guard, or other signal) near the antennaelements during assembly, disassembly, or when the antennaelements are within reach, particularly at the ANTENNA elements if the ANTENNA is lowered on helmet, safety glasses (NSN 4240-00-052-3776)

2 , and glovesbefore assembly and erection of the OE-254 11-5895-357-13 FIXED OPERATION WITH LONG RANGE ANTENNASWARN I N GTELESCOPING ANTENNAMASTTYPICAL TOWEREXTENDED RANGEANTENNADOUBLET ANTENNANEVER ERECT THESE LONG RANGE ANTENNAS DIRECTLY UNDER POWER YOU MUST ERECT THESE LONG RANGE ANTENNAS NEAR POWERLINES, POWERLINE POLES ORTOWERS, OR BUILDINGS WITH OVERHEAD POWERLINE CONNECTIONS, NEVER PUT THE ANTENNACLOSER THAN TWO TIMES THE ANTENNA HEIGHT FROM THE BASE OF THE POWERLINE, POLE,TOWER OR ATTEMPT TO ERECT ANY LONG RANGE ANTENNA WITHOUT A FULL ERECTING ANY LONG RANGE ANTENNA , INSPECT ALL THE PARTS MAKING UP THEANTENNA KIT. DO NOT ERECT THE ANTENNA IF ANY PARTS ARE MISSING OR AS MUCH OF THE ASSEMBLY WORK AS POSSIBLE ON THE ERECTING THE ANTENNA , ALLOW ONLY TEAM PERSONNEL IN THE ERECTION SURE THAT THE AREA FOR THE ANCHORS IS FIRM.

3 IF THE GROUND IS MARSHY OR SANDY,GET SPECIFIC INSTRUCTIONS FROM YOUR CREW CHIEF OR SUPERVISOR ON HOW TO REINFORCETHE SELECTING LOCATIONS FOR ANCHORS, AVOID TRAVELED AREAS AND ROADS. IF YOU CANNOTAVOID THESE AREAS, GET-SPECIFIC INSTRUCTIONS FROM YOUR SUPERVISOR AS TO WHAT CLEAR-ANCE YOUR GUY WIRES AND ROPES MUST HAVE OVER THE TRAVELED AREAS AND MARK ALL GUY WIRES AND ROPES WITH THE WARNING FLAGS OR SIGNS SUPPLIED BY YOURUNIT. IN AN EMERGENCY, USE STRIPS OF WHITE CLOTH AS WARNING YOU SUSPECT THAT POWERLINES HAVE MADE ACCIDENTAL CONTACT WITH YOUR ANTENNA , STOPOPERATING, ROPE OFF THE ANTENNA AREA, AND NOTIFY YOUR THE WEATHER IN YOUR AREA CAN CAUSE ICE TO FORM ON YOUR LONG RANGE ANTENNA AND ITSGUY WIRES AND ROPES, ADD EXTRA GUYS TO SUPPORT THE SYSTEM.

4 ROPE OFF THE AREA ANDPOST IT WITH WARNING SIGNS LIKE "BEWARE OF FALLING ICE".DO NOT TRY TO ERECT ANY ANTENNA DURING AN ELECTRICAL A SHARP EYE ON YOUR ANCHORS AND GUYS. CHECK THEM DAILY AND IMMEDIATELYBEFORE AND AFTER BAD 11-5895-357-13C/(D blank)*TM 11-5985-357-13 TECHNICAL MANUALHEADQUARTERSDEPARTMENT OF THE ARMYNO. 11-5985-357-13 Washington, DC, 1 February 1991 CHAPTERSECTIONSECTIONCHAPTEROPERATOR S, ORGANIZATIONAL, ANDDIRECT SUPPORT MAINTENANCE MANUALAN T EN N A GROU P OE-2 5 4 /GRC(N SN 5 9 8 5 -0 1 -0 6 3 -1 5 7 4 )REPORTING ERRORS AND RECOMMENDING IMPROVEMENTSYou can help improve this manual. If you find any mistakes or if you know ofa way to improve the procedures, please let us know. Mail your letter, DA Form2028 (Recommended Changes to Publications and Blank Forms), or DA Form2028-2 located in back of this manual direct to: Commander, US ArmyCommunications-Electronics Command and Fort Monmouth, ATTN:AMSEL LC LM-LT, Fort Monmouth, New Jersey either case, a reply will be furnished direct to OF CONTENTSP aragraphINTRODUCTIONG eneralScope.

5 1-1 Consolidated index of Army publications and blank forms .. 1-2 Maintenance forms, records, and reports ..1-3 Reporting equipment improvement recommendations (EIR) .. 1-4 Administrative storage .. 1-5 Destruction of Army electronics materiel ..1-6 Description and dataPurpose and use .. 1-7 Page1-11-11-1111-11-11-1 Differences between models .. 1-2 Description .. 1-8 System application ..1-9 Components of end item ..1-10 Tabulated data..1-11 INSTALLATION AND OPERATING INSTRUCTIONSS ervice upon receipt of equipment..2-1 Systems ..2-2 Positioning baseplate and guy stakes..2-3 Assembling ANTENNA equipment.. using one person .. 2-6 Connection to radio set .. 2-7 Moisture proofing mated rf connectors.. 2-8 Lowering ANTENNA .. 2-9 ANTENNA stowage/transit ..2-10 Operation under unusual conditions ..2-11 Checking installed OE-254/GRC using Test Set, RF PowerAN/URM-182 or AN/URM-182A.

6 2-121-21-31-31-32-12-12-12-22-42-52-72-8 2-82-92-102-14*This manual supersedes TM 11-5985-357-13, 16 August 11-5985-357-13 TABLE OF WARNING label ..OPERATOR/CREW MAINTENANCES cope of operator s maintenance ..Materials required ..Operator/crew preventive maintenance..Preventive maintenance checks and services periods..Cleaning ..ORGANIZATIONAL MAINTENANCES cope of organizational maintenance ..Test equipment, tools and materials required..Organizational preventive maintenance checks and services ..Touchup painting ..Organizational maintenance troubleshooting procedures ..Organizational troubleshooting ..Repairs ..FUNCTIONING OF EQUIPMENTG eneral ..Balun assembly ..DIRECT SUPPORT MAINTENANCE INSTRUCTIONSS cope of direct support maintenance..Tools, test equipment and materials required..Direct support troubleshooting ..Feedcone disassembly and assembly procedures ..Balun disassembly and assembly procedures.

7 Final assembly inspection ..REFERENCES ..COMPONENTS OF END ITEM LISTI ntroduction ..Integral components of end ..Basic issue items ..ADDITIONAL AUTHORIZATION LIST (Not applicable)MAINTENANCE ALLOCATIONI ntroduction ..Maintenance allocation chart for ANTENNA GROUP OE-254/GRC .., ..Tool and test equipment requirement for ANTENNA GROUP OE-254/GRC ..Remarks..EXPENDABLE SUPPLIES AND MATERIALS LISTI ntroduction ..Expendable supplies and materials list ..LIST OF ILLUSTRATIONST itle1-1 ANTENNA GROUP 0E-254/GRC erected ..1-2 ANTENNA GROUP OE-254/GRC components and running spare parts ..2-133-13-23-33-43-54-14-24-34-44-54-64 -75-15-26-16-26-36-46-56-6.. ANTENNA GROUP OE-254/GRC components and running spare parts .. Mast and base assembly, AB-1244/GRC.. Mast and base assembly, AB-1244B/GRC..1-31-41-52-02-12-22-32-42- 52-62-72-62-72-82-92-102-112-12iiSystem application.

8 ANTENNA GROUP 0E-254/GRC radiation pattern .. ANTENNA AS-3166/GRC ..WARNING INSTRUCTIONS- to be followed when erecting or lowering antennas..Positioning guy stakes ..Driving guy stake ..Assembling mast ..Attachment of guy hooks to guy plate ..Guy attachment to ground anchor ..Secured guy snubber ..Removing guy from snubber lock ..Secured guy snubber ..Removing guy from snubber lock ..Pulling guy rope taut ..Connecting insulating extension to feedcone assembly ..Assembling ANTENNA elements ..Captivating feedcone assembly connector cap ..Secured connector cap ..Page2-143-13-13-13-13-24-14-14-14-14-2 4-24-25-15-16-16-16-16-46-46-4A-1B-1B-2B -3D-1D-3D-4D-5E-1E-2 Page1-01-21-31-41-41-31-41-51-62-22-22-2 2-22-22-32-32-32-32-32-32-32-42-4TM 11-5985-357-13 LIST OF ILLUSTRATIONS ContinuedFigure2-132-142-152-162-162-172 -182-192-20 TitlePageStrain clamp open.

9 2-4 Strain clamp closed ..2-4 Erecting ANTENNA GROUP OE-254/GRC with one person .. 2-5 Positioning OE-254/GRC for one person erection (sheet 1 of 2) ..2-6 Positioning OE-254/GRC for one person erection (sheet 2 of 2) ..2-7 Connections of CG-1889C/U to AS-3166/GRC and .. 2-8 Preparing mated connector for weatherproofing..2-8 Weatherproofing mated connectors ..2-8 Ground anchor/pivot clevis alignment .. Ground anchor/pivot clevis alignment..2-92-212-222-232-242-252-265- 16-16-26-36-46-56-66-7 Transit bag with parts installed ..2-10 Typical substitute ground anchors ..2-11 Assembling 0E-254/GRC for use on M577 Command Post ..2-120E-254/GRC installed on top of M577 Commmand Post ..2-13 Test setup for radio and OE-254/GRC with AN/URM-182 or AN/URM-182A ..2-14 WARNING label .. 2-15 Balun assembly diagram .. 5-1 Balun assembly, internal.

10 6-1 Removing balun housing from feedcon subassembly.. 6-2 Exposing wire leads .. 6-3 Unsoldering wire leads .. 6-4 Removing balun subassembly, .. 6-5 Assembling UG-680/U to balun assembly .. 6-6 Cabling procedure .. 6-6iiiTM 11-5985-357-13 Figure 1-1. ANTENNA GROUP OE-254/GRC 11-5985-357-13 CHAPTER 1 INTRODUCTIONS ection I. This manual describes ANTENNA GroupOE-254/GRC (fig. 1-1) and provides instruction forinstallation, operation, and maintenance. It includesinstructions for operation under usual and unusualconditions, cleaning and inspection of the equipment,and replacement of parts available to the The maintenance allocation chart appears inappendix Consolidated Index of Army Publicationsand Blank FormsRefer to the latest issue of DA Pam 25-30 to determinewhether there are new editions, changes, or additionalpublications pertaining to the Maintenance Forms, Records, and Reportsa.


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