Collins_237B-3_user_W1OP.pdf

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1、Collins Government Telecommunications Group l t 523-0556933-302831 10 April 1969 3rd Revision, 1 August 1977 ,F Rockwell lnternational Collins instruction book 2378,-3 Rotatable Directional HF Antenna Collins Government Telecommunications Group Rockwell I nternationa! Dallas, Texas 25207 .z t ( -: P

2、rinted in United States of America - ri - - _j :_. _- P, Et t ,s- , nn, Q Eefl b - Ziqarfi:3iqq i ,R)lgvrl -.,fX, 3A tltii tt; (? c;u/( . c h lt f-t, T orv, Q ; W* ltr-c- BE e r- fl 14 2,1 1ci.:3c7i Qttl -Jct-3 lsY tahle of eontents Section 7 General Descnption 1.1 Purpose of This Book . 1.2 Purpose

3、 of Equipment . . . 1. 3 Equipment Description 1.4 SpecificationSummary 1. 5 Equipment Supplied 1.6 Optional Equipment 1.7 Items Required But Not Furnished 1. 8 Packing Dimensions and Shipping Data. 1. I Service Information Section 2 lnstallation . . 2.1 General 2.2 Site Selection. . . 2.3 Foundatio

4、n and Guy Assembly Anchor Point Construction. Assembly of the Tower Installation of Rotator Kit. Control Kit and Rf Transmission Line Kit . . 2.6 Antenna Array Installation 2.7 Erection of the Tower 2.8 Stowing of Antenna 2.9 143A-3 Rotator Control Unit . 2.10 Radio Frequency Interference Kit Instal

5、lation Section 3 Operating Instructions 2.4 2.5 Page 1-1 1-1 1-1 1-1 1-1 l-4 l-4 l-4 l-4 l-4 2-l 2-l 2-t 2-l 2-2 2-14 2-25 2-26 2-30 2-30 2-30 3-1 3-1 3-1 3-1 3-1 3-52l3-6 4-l 4-l 4-l 4-l 4-2 4-2 4-2 4-2 3.1 3.2 3.3 3.4 3.5 General LocaI Operation Remote Operation From the t43A-3 Antenna Rotator Con

6、trol 143A-3 Antenna Rotator Control Calibration Stowing of Antenna Section 4 Theory oJ Operation 4.1 General 4.2 Local Rotator Controt Circuit (Tower Base) . 4.2.1 General 4.2,2 Operation 4.3 Remote Control Circuit 4.3. 1 General 4.3.2 Operation table of eontents (cont) Page Sectionslilaintenance. 5

7、-1 5.1 General 5-1 5.2 Lubrication 5-1 5.2.1 Rotator 5-1 5.2.2 Erecting Winch and Pulley Block 5-1 5.3 Inspection 5-1 5.3.1 Antenna Tower and Guy Cables 5-1 5.3.2 Rotator 5-2 5.3.3 Antenna Array 5-2 5.3.4 The 143A-3 Antenna Rotator Control 5-3 5.3.5 Obstruction Light Control . . 5-3 5.4 Antenna Towe

8、r Coating/Painting 5-3 5.4.1 SurfacePreparation. 5-3 5.4.2 Pre-Primer Coat (CPN 005-1494-070) 5-5 5.4.3 Primer Coat (CPN 005-1494-010) . 5-5 5.4.4 Top Coat (CPN 005-1494-xxx) 5-6 list of illustrations Figure Page 1-1 2378-3 Rotatable Directional HF Antenna 1-0 l-2 143A-3 Antenna Rotator Control l-2

9、2-l Anchor and Foundation Details (3000-PSF Soil) . 2-3/2-4 2-2 Anchor and Foundation Details (1000-PSF Soit) . 2-7/2-8 2-3 Installation of Erection Kit . 2-9/2-10 2-4 Rotator Assembly 2-15/2-16 2-5 Rotator Heater Kit Instaltation 2-17/2-18 2-6 Installation of Rotator Kit . . 2-19/2-20 2-7 Instalati

10、on of Rotator Control Kit. . . 2-21/2-22 2-8 Installation of Obstruction Lighting Kit . 2-23/2-24 2-9 Installation of RF Transmission Line Kit . 2-25 2-10 Boom Assembly, Center 2-27/2-28 2-10A Antenna Array Center Boom Section and Latching Assembly, Installation Details . 2-30A/2-308 2-ll Boom Assem

11、bly, Front 2-31/2-32 2-12 Boom Assembly, Rear. 2-33/2-34 2-l2A Antenna Array, Transmission and Balun Components . . . . . 2-34A/2-348 2-13 Installation of Antenna Array 2-35/2-36 iiRevised 15 JuIy 19?1 list of illustrations (cont) Figure 2-14 Winch and Block Assembly in Use 2-15 Antenna in Lowered P

12、osition With Erecting Mast InstaIled 2-16 Antenna During Erection With Array Hinging Detail . . . . 2-17 Antenna During Erectlon With Array Locked 2-18 Antenna Raising and Lowering Checklist Placard 2-19 Radio Frequency Interference Kit Installation 3-1 Local Control Unit, Controls and Indicators 3-

13、2 143A-3 Antenna Rotator Control, Controls and Indicators 237B-3 Directional HF Antenna, Design Parameters . . . 6.5-MHz Elevation Plane Patterns, 237B-3 Antenna . . . . 10-MHz Elevation Plane Patterns, 237B-3 Antenna . . 20-MHz Elevation Plane Patterns, 237B-3 Antenna . . . . . 30-MHz Elevation Pla

14、ne Patterns, 2378-3 Antenna . . . . . 40-MHz Elevation Plane Patterns, 2378-3 Antenna . . . . . Azimuth Plane Patterns, 237B-S Antenna Plot of Vertical Angle Versus Frequency 143A-3 Antenna Rotator Control, Schematic Diagram . . Photoelectric Obstruction Light Switch, Schematic Diagram list of tahle

15、s 4-l 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 5-1 Page 2-4t 2-42 2-43 2-44 2-45 2- 46 3-2 3-4 4-2 4-3 4-3 4-4 4-4 4_5 4_5 4-6 4-7 /4-8 5-4 Table 1-t Equipment Supplied l-2 Optional Equipment 1-3 Packing Dimensions and Shipping Data 3-1 Loca1 (Tower Base) Controls, Fuses and Indicators . 3-2 143A-3 Antenna R

16、otator Control, Controls and Indicators 5-1 Recommended Tower Coatings 5-2 Spraying Equipment, Carboline 1037 WP Wash Primer and Carboline 1294 ToP Coat 5-3 Spraying Equipment, Rustbond Primer 6C . . . Page l-4 l-4 r-5/t-6 3-3 3-3 5-6 5-7 /5-8 5-7 /5-8 1r1 general descrrptton si-) ts* k t$ ti ti I t

17、;i 1-0 Figure 1-L. 237B-3 Rotatable Directional HF Antenna. seetion I general deseription 1.1 PLIRPOSE OF THIS BOOK on a concrete base and guyed frotn seven points. Three guy cables spaced at 120 intervals are This publication contains installation, operation, attached to the topofthetowerandfour gu

18、y cables a:rd maintenance instructions for the 2378-3 spaced at 90 intervals are attached to the middle Rotatable Directional HF Antenna. The installa- of the tower. rion directions are aimed at enabling an experi- elced crew to erect the antenna in the safest and When desired, the antenna system ca

19、n be lowered :.:.ost efficient manner possible. Particularatten- and stowed within a 2-hour period by two men :1on should be paid to all Warning, Caution and using only manualequipment. Byusingtheoptional ,:te designations in these instructions. power tool kit, two men can lower and stow the antenna

20、 in only 30 minutes. 1.2 PURPOSE OF EQUTPMENT The 2378-3 offers exceptional environmental The 23?B-3 Rotatable Directional HF Antenna is resistance and easy maintainability from the a wide-band aluminum array which will operate ground. :ver the 6.5- to 40.0-MHz frequency range with a minimal vswr va

21、riation. This antenna meets f.4 SPECIFICATION SUMMARY both military and commercial requirements for a reliable broadband hf antenna which can be rap- Array: idly changed in both operating frequency and Frequency Range azimuth. See figure 1-1. 6.5 MHz to 40.0 MHz 1.3 EQUIPMENT DESCRIIIION Polarizatio

22、n Horizontal The 2378-3 is an antenna of the log-periodic tlpe. The 237-8 configuration is a series of Impedance dipole elements (logarithmic periodic function 50-ohm, unbalanced nominal determines size and spacing) arrangedinaplanar isosceles tapered array. The elements are fed VSWR rvith a balance

23、d transmission line which is alter- Less than 2:1 relative to a50-ohmsource nately transposed electrically between adjacent dipole elements. The array is constructed with a PowerHandling Capability chromate conversion finish structural aluminum 50-kw pep., 25-kw average (6061 T6) and stainless steel

24、 hardware. Azimuth Beam Width A sail mounted on the array equalizes wind loads 65typical and prevents windmilling. A rotator mounted on top of the antenna tower rotates the array. A Vertical Beam Width rotary coaxial joint integral with the rotator Varies with frequency provides rf feed to the anten

25、na. The rotator pro- vides approximately 360 per minute unidirec- Gain tional rotation. The antenna can be positioned to 72 db minimum at 6.5 MHz; increases any azimuth position from the tower base or in monotonically to 13.5 db at 20 MHz; 30o increments from the 143A-3 Antenna Rotator 13.5 db minim

26、um 20 to 40 MHz. Control. See figure 1-2. Boom Length The antenna supportingtower is a 100-foottubular, 63 feet (19.2 meters) high strength steel, galvanized structure mounted 1-1 general descnPtlon o 6 6 m a a U 63 ro or z ) x o fi E td :a I! g0 F :f 9o JC FJ z()o oqe -JF *;5 H = -E5u ai z*. ()o F

27、Ir trt () 35 o2 L- ldy 3= o= a-a z o x ( cm o Edt UF - IDETAIL D 4 t/2 DETAIL G 2 PLACES 4 REQD F- a rvp ll ti rll _tL - +l N lt_ SEE NCTE I I,/4 DIA X 60 REROD 4 REQD NI _1 *l -l nl -l N 6 -l I 22 t/2+1 t-L 1.,. * i, *l ,rr L-lL Lo.-,1 l -l z = o bi lo t_ 2 TYP + I t I -1 re t* -1- +l n N n +t o 1

28、-! r*, , 2 53/64 ! t /32 TYP 9 t t/16 9 t r/16 GROUND LEVEL s +t i l I I I I I z o N n +t I : n I l*, ,* t/2 )tAx lB - 2 RERoD 5 REQD, POSITION AS SHOWN 6 REQD DETAIL E 2 PLACES ITE,4 4I REF I /2 DIA X 68 REROD .8 REQD, P0StTt0N GROUND LEVEL F N I o l* a,-l r r | /2 Dt; L_ +6 I 2 TYP I DETAIL D DETA

29、IL C c F n rlll 1l!l lrll J:=:-z =N N GROUND LEVEL ;JI 1., r 2 REoc / D l+ t -ln-J 3 TYP lq otn x 56 REnoO a 6 REQD +l N D I t_ -i +l I -t nl t ol l I (- =- I I I x t/32 zo trz t trczl l+45 t5 TYP lr- lo t_ L+ | /2 )tA x 68, RER0D 9 REQD POS ITION 3 T- t/4 DtA X 52 RERC: +_b_o_J,_6-, lll tlll rr,ll

30、SEE DETAIL F * ,-r .,. I /I -,. sEE DETATL E ,/ QTY R EQD ITEM N0. 4 4 4 4 I t2 325-O 3 I I 2 I I I I I 6 t8 6 t2 I I 2 I 9 I I I 2 2 I 8 4 4 B 3 3 3 3 25.a I 35.0 2 I 2 3 4 6 7 I 9 t0 il t2 t3 t4 t5 t6 t7 t8 t9 2A 2l 22 24 25 26 27 28 29 3t 32 33 34 35 36 37 38 39 40 4t 42 44 45 6 REQD DETAIL E 2 P

31、LACES I /4 DIA X 56 REROD 6 REQD DETAIL C l _a_/ a4, SEE DETAIL F,- d n q a ta i- SEE NOTE SEE DEIAIL D z j t/2 DtA x t4-a _ i ,_)- A U.-sEE oETnrL c PLAN VIEW 3rl r0 2 TYP BENT AS SHOWN )/2 DtA X t0-0 RERoD 2 REQD L- li JI _r l t2 72 t /2 ltA x 68 RERoD 4 REQD P0StTt0N TYP ANCHOR AND FOUNDATION DET

32、AILS T o ? GROUND LEVEL + l+ r0 REF L /2 TYP+rP I i sl N a- t/4 DtA x 20 RERoD i 9 REQD SECTION D-D ROTATED 45 CW QTY R EQD IT EM N0. COLLINS PART NU MBE R DESCRIPTION 4 4 4 I t? 325.O 3 5 I I 2 I I I I I 6 t8 6 t2 I I 2 I 9 I I I 2 2 I 8 4 4 8 3 3 3 3 25.4 I 35.0 I z I 2 3 4 5 6 1 I 9 t0 il t2 t3 t

33、4 t6 t7 t8 t9 20 2l 22 23 24 25 26 27 2A 29 30 3l 32 33 34 35 36 37 39 40 4l 42 43 44 45 0 r 5-0856-000 0r5-t064-000 JIU-U)ZI-UUU 3 r 0-0523-000 766-2356-004 0r3-r324-040 432-r09r-000 766-2364-00 I 0t3-1891-040 766-2352-Aa3 1 66-2352-004 766-2362 -003 766-236 l -003 766-2366-00 I 766- 2365 - 003 766

34、-2 367- 005 766-2354-O04 326-r53r-000 334- r 282-000 766-23ss-00 r 334- t271 -AOa 0r9-r313-000 766-2377 -Oa3 0 I 9-0279-000 0r9-l3t t-000 0t9-0129-000 oa5- t 222-A2a 0 I 5-2702-000 766-2369-00 I 332-07 I 2-000 338-0096-000 0t9-1314-000 0 r s-2352-000 0t5-4136-000 0r5-4t97-000 0 r 5-4235-000 0 I 5-23

35、54-000 0t5-4r39-000 0t5-4r98-000 0 r 5-4237-000 42 t -2448-000 788-6275-00 I 42r-r020-000 774-633r-001 or 3 -0994-OO3 ROD,ANCHOR-34XIOFT. ROD,ANCHOR-IXIOFT. WASHER-4X4Xl/2THK. WASHER.6X6X3,/8THK. BRACKET, WINCH BOLT, ANCHOR STRAND,GUY-38(FT) GUY, UPPER SECTION, TOWER PIVOT, LEFT PIVOT, RIGHT BRACKET

36、, BASE BRACKET, CENTER SHAFT, PIVOT LEG. TOWER PLATE, ROTATOR BRACKET, LOWER scREW, CAP - 3 4 - l0 X2 l.tz NUT.HEX.-34.I0 U -BO LT NUT.HEX.-3E-16 BOX, JUNCTIOIT ARM, CONDUIT-NIPPLE NUT, LOCK - 3.1 BREATHER, CONDUIT CONDUIT.34X IOFT. COMPOUND, SEALING (TUBE) KIT, STRAPPING CONDUIT - 3 4 PLUG,PIPE-34

37、PIN, COTTER BOX, JUNCTION GUY, STRAND . DEAD ENO . 3.8 TURNBIJCKLE-58X12 SHACKLE - 2 THIMBLE - 3 t GLY, STRAND . DEAD END - I 2 TURNBUCKuE-34XlB SHACKLE . 5 3 THIMBLE - I 2 WIRE, ELEC IFT 5TRAP, GROLiiINC WIRE FT) INSTRUC- O ;.ATE CLAMP, HOSE Figure 2-1 Anchor and Foundation Details (3000-PSF Soil)

38、(Sheet 1 of 2). installation NOTES: I. LOWER SIDE GUY ANCHOR LOOPS MUST BE LOCATED WITHIN I/2 INCH OF LINE PASSING THROUGH PIVOT SHAFT HOLES IN BASE BRACKETS ITEM I2, VERTICALLY AND HORIZONTALLY 2. IN ACID, ALKALINE OR SALTY SOIL COVER EXPOSED ANCHOR RODS WITH BITUMINOUS WRAP 3. EARTH FORMED ANCHORS

39、 TO MINIMUM DIMENSIONS SHOWN ARE PREFERRED 4. IN ALL SPLIT BALLOONS TOP FIGURE IS MATERIAL LIST ITEM AND BOTTOM FIGURE IS QUANTITY 5. LEVEL ITEM I4 BEFORE RAISING TOWER 6. SAFETY WIRE ALL TURNBUCKLES AFTER PLUMBING TOWER USING ITEM 43 7. ANCHORS AND FOUNDATION DESIGIIED FOR 3OOO PSF SOIL 8. TOLERANC

40、E ON FRACTIONS t I,/4 UNLESS OTHERWISE SPE CI FIE O 9. OVERALL OIMENSIONS ON CONCRETE ARE MINIMUM UNLESS OTHERWISE SPECIFIED IO. LACING OF TOWER MUST BE ASSEMBLED AS SHOWN IN MAIN VIEW AND VIEW B-B TO INSURE PROPER OPERATION OF LOWER GUY BRACKET, ITEM I7. ORIENT ITEM I7 WITH TUBE SECTION AS SHOWN IN

41、 SECTION A-A I I. END OF CABLE SHOULD BE VISIBLE WiTH A MINIMUM OF I INCH EXPOSED I2. COAI ALL CONDUIT THREADS WITH SEALER, ITEM 27 I3. ITEM 4I REF, TO BE CONNECTED TO SUITABLE GROUIID ROD FOR LIGHTNING AND STATIC DRAIN PROTECTION. SUITABILIW DEPENDS ON FREQUENCY OF ELECTRICAL STORMS AND GROUND COND

42、UCTIVITY I4. GROUT SPACE UNDER BRACKETS, ITEMS I2 AND I3 AFTER LEVELING 8104 564 6 Revised 1 December 19752-3/2-4 THIS ANCHOR ROD I PLACE ONLY /_ 4 A )o) v- :Y-r*-JL.S ( 6iK- f -/ .cV - : .: _.t DETAIL A _l I - rl D ta/ lo IIX|.J 3 PLACES PART OF LIGHTING KIT (OPTIONAL EQUI P) COLLINS PART N0. 515-8

43、453-001 .E NOTE 12 SEE DETAIL A (2 ANCHOR RODS) rF II le SEE DETAIL E _/ SEE DETAIL ITEM 4I REF SEE IIOTE I3 VIEW B.B sEcTtotr A-A SEE NOTE I O 20 t/2 t t/2 inst allation i- I ) DETAIL A 3 PLACES PART OF LIGHTING KIT (OPTIONAL EQUIP) COLLINS PART N0.5r5-8453-001 SEE NOTE 12 SEE DETAIL A (2 ANCHOR RO

44、DS) DETAIL B 4 PLACES !1E!t-9:9. SEE DETAIL B SEE DETAIL B SEE DETAIL? PLAN VIEW ;- sEE DETAIL A ,EE NOTE i t -j , ITEM 4 I REF sEE iloTE 13 vtEt/Y B_B SEE tiOTE IO Figure 2-1. Anchor and Foundation Details (3000-PSF Soil) (Sheet 2 of. 2). THIS ANCHOR ROD I PLACE ONLY 20 t/2 tt/2 ELEVATION 2-5/2-6 S

45、EE NOTE I I 4-lrJl.8 .6- I 2 53/64!l /42 I P. _5 2t/32tt,j?_ lP. 25 ELEC WiRE ITEM 4L REF 50r3 EYE OVAL Ai F.2 (TYP,) rl m N n +l : n N a n N n _ N 4l tl /32 +1 o n +l o u o NOTES 1- L,. ; , DIA ANCHORS WINCH BRAC KE T S 3/4 Dta ANCHOR BOLTS I N -.n 4-N0.4-6X36 (2E.W. POSITION THRU !lOLES IN BR ACKE

46、 T ) n o j N0.3 AT 24,1 N0. 3UAr 241 N0. 3 AT 241 16 NO. 4 - BSND ALT. SIDE BARS ACROSS ENDS NO. 3L.J AT 241 r0 N0. 4 E.W. 6X6X3l8 WA SHERS 2,-C X t0-0, E LEVATION FOUNDATION F- I DETAIL D ELEVATIOI FOUNDATIC DETAIL C 4 - N0. 4n E.W. FINISH GRADE ; tI I IL_ _ I 3. Ct. I TYP. l_._L4 f- .- -,1 r- I xx

47、i + / t( I /.r I n +l N 3 N J o OF F o PT-A. o o / I -n o,-. I -, - c t. -,+) -,-_ ,O tu_-,uVl.)o)*:, | ,ykJ* - - ti-=t*f V I d-q) I ,. -ci I *o /., ll ,?o i-f-(o I NO.2T CHAM FER 25, ELEC WRE TE/ 4i REF IN ALL SPLIT tALI-OONS TOP FIGURE IS I,IAiERIAL L, le. T B riz4 - N0. 4 - 6 X 36 (2 E.!v. POSITI

48、ON THRU IOLE5 IN BR ACKE T ,4 - N0. 4n E.W. FINISH GRADE r-lyx-ge- NO. 3U AT 24,1 - lto. s nt 24,t I6 NO. 4 . BEND ALT. SIDE BARS ACROSS ENDS N0. ltl Ar 21t 25 ELEC WLRE I-TEM 4 REF 6 x 6 x 3/ WA SHERS I . DIA ANCHORS N0.3Ar24t I o iI 3 cr. t- l*o iL 6X6 X3l8 WASHER t0 N0.4 E.w. 2,-0 x t0,-0, E LE V

49、AT ION FOUNDATION F-3 OETAIL C Ar (1 IL -_ I I Il- 3-o x 6-0 ELEVAT ON FOUNDAT ON F_2 DEIAILF_2PLAC: DETALG_ZPLAC 4,-0 x 6 -0 ELEVAT ON FOUNDAT ON F- 4 DETAIL E-2 PL: Figure 2-2. l $l zal .ldl .i , 1- r-+ aaa I I -T ) a ) ,l r- I I L- t- I L=3 Revised 15 July 19 NOTES t. ?. C H AIVFE R FINISH GRAD E I DIA ANCHOq -_I a N I l T- o 9 lT- I it- lZ) I l+ lt il +i li l._ 2_0 _.1 I