SCR-193D_U_serv_user_TM11-273_1945.pdf

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1、r WAR DEPARTMENT TECHNICAL MANUAL RADIO SETS SCR-193-D -G -H -J -K -KB -KW -L -M -P -Q -R -S -T and -U WARNING: This manual is the property of the United Statea Government, and is printed and distributed solely for use of the military, naval, and civilian peraonnel f the War and Navy Departments, an

2、d may not be publiahed or reproduced io whole or io part, or in any manner or form (except by lawful copyright holders who may reproduce their copyrighted material in its original form) uoleaa 1pecifically approved by authorized military public relations agenciea. WAR DEPARTMENT MAY 1945 WAR DEPARTM

3、ENT TECHNICAL MANUAL TM 11-273 This Slf/er.wdes TM 11-273, 12 April 1941, illcllfdilfg C 1, 18 October 1911; C 2, 8 October 1942, a11d C 3, 10 Ma rch 1944; TB 11-273- 1, 8 /l11J11St 1944, a11d TB 11-273-2, 11 /llfgsl 194-1. RADIO SETS SCR-193-D,-G, -I-I,-J,-K,-KB, -K W,-L,-1ti,-P, -Q,-R,-S,-T, and -

4、U WARNING: T his manual is the property of the United States Government, and is printed and distributed solely for use of the military, naval, and civilian personnel of the War and Navy Departments, and may not be published or reproduced in whole or in part, or in any manner or form (except by lawfu

5、l copyright holders who may reproduce their copyrighted material in its original fo rm ) unless specifically approved by authorized military public relations agencie. ff/AR DEPARTMENT U11ited Stales Covcrnmllll Priutiug Office Washi11glon: 1915 MAY 1945 WAR DEPARTlVIENT Washington 25, D. C., 2 i.lay

6、 19-1-5 TM 11-273, 1adio Sets SCR-193, -D, -G, -H, -J, -K, -KB, -KW, -L, -rd, -lJ, -Q, -R, -S, - T, ancl -U, is published for the information and guidance o( all concerned. A. G. 300.7 (16 Jan. 45) Bv oRoER oF TnE SEcRET Anv oF vVAR: OFFICIAL: J. :. U LTO Major C eneral Tlie Adjutant General DrsTRJB

7、UTION: G. C. MARSHALL Cluef of Staff AAF (5); AGF (5); ASF (2); T of Opn (5) ; Dept (5); Def Comcl (2); Base Comcl (5); AA I Comcl (2); Ann S Div ASl (1); Tech Sv (2); v (5); Area ASVC (2); WDGS Lib (5); P PE (2); Dep 11 (2) ; Gen Over- sea SOS Dep (Sig Sec) (2); Gil (2); M Cone C (2); Air Base Hosp

8、 (2); Cen Sv Sch (5) ; Sp Sv Sch (10); USMA (2); ROTC (5); Lab 11 (2); Sig A (2); Rep Shop 1l (2); A ( 5) : D (2): AF (2) T/0 3-25 (2); 5-416 (5); 5- 512S (5); 6-10- 1 (5); 6-12 (5); 6-20-1 (5); 6-26 (5); 6-36 (5); 6-50- 1 (5); 6-56 (5); G -76 (5); 11- 7 (5); 11-7S (5); 11-15 (2); ll-18 (5); 11-25 (

9、2); 11-47 (5); 11-57 (5); 11-87 (5); 11-95 (2); 11-97 (5); 11-107 (5); 11-127 (5): 11- 147S (5); ll-237 (5): 11-257 (5); 11-287 (5); 11- 537S (5); 11-587 (5); 11-592 (5); 11- 597 (5); 17-20- 1 (5); 17-26 (5); 17-29 (5); 17-60- 1 (5). Refer to lM 21-6 for explanation of eli. tribution fmmula. ii CONT

10、ENTS PART ONE. INTRODUCTION. Paralraph Page Section !. Description. General . . . . Technical characteristics . . . . . . . . . . 2 2 F requ ncy spectrum chart . . 3 3 Table of omponcnts . . . 5 Packaging data . . 5 10 I escription of major components . . () 11 Di ffcrences in models . . . . 7 I If.

11、 Installation of Radio et SCR-193-(*). Siting . . s IS Unpacking, uncrating, and checking . . 9 17 Connections and interconnections . . . 10 20 Installation of tubes. accessories, and other assembly details . . 11 ? _.) PART TWO. OPERATING INSTRUCTIONS. Section I If. Controls and their use. If/. Ope

12、ration. Starting procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I 2 24 Operating i1stru tions . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2-l Stopping procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-l 26 I Equipment performance check li t. Pu

13、rpuse and usc of check list. . . . . . . . . . . . . . . . . . . . . I 5 26 lquipmcnt perfcmnancc check list . . . 16 28 PART THREE. PREVENTIVE MAINTENANCE. Scctio11 T !. P reventive maintc nncc tcchniqu s. M caning f prevcnti ve maintenance . . D scription of preventive maintenance techniques . . .

14、 P reventive maintenance of Hadio T ransmitter B - 191-( ) . . P reventive mai11t nance of ladio Receiver BC- 312-( ) . . . . Cords and cables . . . . . . . Multiple connectors . . . . . Antenna . . . . . . . Mountings . . . . llcadsct, k y. and loucbpcaker . . . . . . . Ill 17 35 IS 35 19 36 20 37

15、21 37 22 37 23 37 2-l 38 r - J 3R Paragraph Page Vll. Itemized preventive mainte11ance. General . . . . . . Common materials needed . . Item 1, exterior of Radio Set SCR-193-(*) . . . . Item 2, cords and cables . . . Item 3, multiple connectors . . . . . . . Ttem 4, antenna . . . Ttem 5, headset, ke

16、y, and loudspeaker . . Preventive maintenance check list. VI I I. Lubrication. VI/ ar Department I ubt:ication Orders . . . . Requisition of War Department Lubrication Orders ompliance with vVar Department l.ubrication Orders . . . . . . . . . IX. Moistureproofing and fungipro fing. General . . . .

17、. . . . . . . . . . . . . . . . . . . . . . . . Treatment . . . . . . . Radio Receiver BC-312-( ) . . . . . . Hadio Transmitter BC-191- ( ) . . . . Dynamotor BD-77-( ) . . . . . . . . . . . . . . . junction Box T:M- 188. . . . . . . . . R.adio terminal box . . . . . . . 26 39 27 40 28 40 29 40 30 40

18、 31 40 32 41 33 41 34 41 35 2 3o 42 37 42 38 43 39 43 40 3 41 43 42 43 43 44 PART FOUR. AUXILIARY EQUIPMENT. PART FIVE. REPAIR INSTRUCTIONS. Section X. Theory of equipment. . General . . . . . . . . . Over-all system function . . . . . . . . XI. Trouble shooting. 44 45 46 46 General trouble-shooting

19、 information. . . . . . . . . . . . . . 6 46 Trouble-shooting procedures. . . . . . . . . . . . . . . . . . . . . 47 49 Secti nalizing trouble in Radio Set S R- 19.3-(*). 48 SO ording continuity tests. . . . . . . . . . . . . . . . . . . 49 51 Unsatisfactory equipment report. . . . . . . 50 52 XI I.

20、 Alignment and adjustment. Sidetone reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 I 54 APPENDIX I. MAINTENANCE PARTS . II. REFERENCES . iv DESTRUCTION NOTICE WHY-To prevent the enemy from using or salvaging this equipment for his benefit. WHEN-iVhen ordered by your commande

21、r. HOW-l. Smash-Use sledges, axes, handaxes, pickaxes, hammers, crowbars, heavy tools. 2. ut- Use axes, handaxes, machetes. 3. Burn-U e gasoline, kerosene, oil, flame throwers, incendiary grenades. 4. Explosives-Use firearms, grenades, TNT. 5. Disposal- Bury in slit trenches, fox holes, other holes.

22、 Throw in streams. Scatter. USE ANYTHING IMMEDIATELY AVAILABLE FOR DESTRUCTION OF THIS EQUIPMENT. WHAT -1. Smash-abinet or case, chassis, tubes, tuning capacitors, instrument 1 anel, and every electrical and mechanical part. Rip out all wiring, in the units. Destroy nameplates and circuit labels. 2.

23、 Cut- iVire, cables, cords, and covers. 3. Burn-Calibl-ation charts, technical manuals, and other printed matter. 4. Bend- Antenna sections. 5. Bury or scatter- Any or all of the above pieces after demolishing the equipment. DESTROY EVERYTHING v SAFETY NOTICE Voltages as high as 1,000 volts are used

24、 in the operation of this equip- ment. These voltages are danger us to life. Do not change tubes or make adjustments inside the set with the high- voltage supply ON. All panels giving access to voltages above 500 v Its are provided with interlocks to shut off the dynamotor when open d. A few service

25、 checks must be made inside the set ith the high voltage on. When making these checks, always have the immediate 1 resence and assistance of another person capable of rendering aid. Yeep one hand in your pocket while making Ligh-voltage measurements. This will prevent touching the electrical circuit

26、 with more than one part of the body at one time. Be sure that high-voltage plate circuits are lead before performing preventive maintenance on this equipment. H igh-voltage capacitors in power supplies mu. t be discharged manually 1 ef re performing preventive maintenance operations. Servicing shou

27、ld 1 e clone with the vehicular battery circuit open. Shorting this battery circuit will cau e a fla h and severe burns unless the 1 ower is turned off. R-f (radio-frequency) voltages as high as 5,000 volts may develop on the antenna of this radio set. Do not touch the antenna while the set is tu rn

28、ecl on. Do not add ga aline to the vehicle fuel tank when the transmitter is on. R-f voltage may cause a spark resulting in an explosion. Turn off the radio transmitter and KEEP it off until refueling is finished. vi FIRST AID FOR ELECTRIC SHOCK Rescue In case of electric shock, shut off the high vo

29、ltage at once and ground the circuits. If the high voltage cannot be turned off without delay, free the victim from contact with the live conductor as promptly as possible. Avoid direct contact with eitheF the live conductor or the victims body. Use a dry board, dry clothing, or other nonconductor t

30、o free the victim. An ax may be used to cut the high-voltage wire; however, be watchful of electric flashes. Symptoms a. Breathing stops abruptly in electric shock if the current passes through the breathing center at the base of the brain. If the shock has not been too severe, the breathing cente1:

31、 recovers after a while and normal breathing is resumed, provided that a sufficient supply of air has been furnished meanwhile by artificial respiration. b. The victim is usually very white or blue. The pulse is very weak or entirely absent and unconsciousness is complete. Burns are usually present.

32、 The victims body may become rigid or stiff in a very few minutes. This condition is due to the action of electricity and is not to be considered rigor mortis. Artificial respiration must still be given, as several such cases are reported to have recovered. The ordinary and general tests for death s

33、hould never be accepted. Treatment a,. Start artificial respiration immediately. At the same time send for a medical officer, if assistance is available. Do not leave the victim un- attended. Perform artificial respiration at the scene of the accident, unless the victims or operators life is endange

34、red from such action. In this case only, remove the victim to another location, but no farther than is necessary for safety. .If the new location is more than a few feet away, artificial respiration should be given while the victim is being moved. During transportation, other methods of resuscitatio

35、n may be used, if the method o transportation prohibits the use of the Shaeffer prone pressure method. Pressure may be exerted on the front of the victims diaphragm, or the direct mouth to mouth method may be used. Artificial respiration, once started, must be continued, without loss of rhythm. vii

36、TL 1330 viii J I b. Lay the victim 111 a prone positiOn, one arm extended directly overhead, and the other arm bent at the elbow so that the back of the hand supports the head. The face should be turned away from the bent elbow so that the nose and mouth are free for breathing (CD and ). c. Open the

37、 victims mouth and remove any foreign bodies, such as false teeth, chewing gum, or tobacco. The mouth should remain open, with the tongue extended. Do not permit the victim to draw his tongue back into his mouth or throat. d. If an as istant is available during resuscitation, he should loosen any ti

38、ght clothing to permit free circulation of blood and to prevent restriction of breathing. He hould sec that the victim is kept warm, hy applying blanket.- or other overing, or by applying hot rocks or bricks rapped in cloth or paper to prevent injury to the victim. The assistant should also be ever

39、watchful to see that the victim does not swallow his tongue. He should continually wipe from the victims mouth any frothy mucus or saliva that may collect and interfere with respiration. e. The resuscitating operator should traddle the victims thighs, or one leg, in such a manner that- ( 1) The oper

40、ators arms and thighs will be vertical while applying pre. sure on the small of the victims back (). (2) The operators fingers are in a natural position on the victims back with the little fmger lying on the last rib. ( 3) The heels of the hands r t on either side of the . pine as far apart as conve

41、nient without allowing the hands to slip off the victim (Q). ( 4) The operators elbows are straight and locked. f. The resuscitation procedure is as follow. : (1) (2) Exert downward pressme, not exceeding 60 pounds, for 1 second. wing back, suddenly releasing pres.ure, and. it on the heels (!). ( 3)

42、 After 2 seconds rest, swing forward again positioning the hands, and apply pressure for another second ( and ). g. The forward swing, positioning of the hands, and the downward pressure should be accomplished in one continuous motion, which requires 1 second. The relt.ase and backward swing require

43、 1 second. The addition of the 2- e on I rest make a total of 4 second: for a complete cycle. Until the operator is thoroughly familiar with the correct cadence of the cycle, he should count the . econ I al ud, speaking distinctly and counting evenly in thousands. Example: one thousand and one, one

44、thousand and two, one thou and and three, one thousand and four, etc. This method of counting facilitates accurate timing. The exact frequency of the operating cycle of resuscitation is of utmost importance. h. Artificial respiration shoull be continued without interruption until ix the victim regai

45、ns normal breathing or until pronounced dead by a medical of-ficer. It may be necessary to continue resuscitation for s vera! hours. For this reason relief operators should be used if available. Method of Relieving Operator The relief operator kneels beside the operator, assuming the same position o

46、n an imagif1ary victim, and follows the operator through three or four complete cycles. When he is sure that he has the correct rhythm, on the next forward swing of the operator the relief operator places his hands on the top of the operators hands without applying pressure. This indicates to the op

47、erator that the relief operator i ready to take over. On the I ackward swing, the operator moves off the victim, to the side, and the relief operator takes the position of the operator. On the next forward swing, the operator being relieved assumes the position on an imaginary victim beside the new operator, and follow