AN-VRC-7_serv_user_TM11-285_1951.pdf

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1、cs D TO 16-30 VRC 7-5 DEPARTMENT OF THE ARMY TECHNICAL MANUAL RADIO SET AN/VRC7 DEPARTMENT OF THE ARMY MARCH 1951 DEPARTMENT OF THE ARMY TECIINICAL IvIANUAL TM 11-285 TO 16-30 J7RC 7-5, RADIO SET ANjVRC-7 DEPARTMENT OF THE ARlVIY Uniled Stalcs Government Printl:l/.g Ojjiu Wa;ltington : f95! MARCH 19

2、51 ii DEP RTMENT OF THE ARMY VA H INGTON 25, D. .,20 jJ alCh H)/j I TM 11-285 is published for the infon11llioll and guidane of all (:on(:orn d. AG 413.14 (16 Mar :)1)l ByonDER F THE ECRETARY OF lJ IE ARMY: OFICIAL: EDVY ARD F. VIT ELL Major Oene1al, U 11 l he 11djtbtant Gene1al J. LAWTON COLLIN . C

3、hief of I tatf, Unitecl8tates A IIny D ISJRIllUTION: Tech vc (2) except 11 (65) ; Arm AFF Bel (ea v To t Se .) (1); AFF (5) ; AA Cornel (2) ; 0 M,Lj ollld (5); Base ornd (5) ; MDW (5) ; A (20) ; CHQ (2). ; F (2); ch (2) except 11 (2); Gen Dep (2) ; Dep 11 (20) except Slg ec, Gen Dep (O) ; Tng Div (2

4、) ; PE (10) 0 l? (2); Lab 1 (5); .4:th 5-226; 6-200; 6-225; 6-226; 6-227; 6-229; 6-235; 6-236; 6-237; 6-416; 6-4-19; 6-447; 711N; 7-31; 7-32; 7-34; 7-35; 7-36; 11-107; 11-127; 11300 A, CB, CC, CD; 11-557; 11-587; 11-592; 11-597; 17-32; 17 -:35N ; 17 -36N . 17-37N; 17-77; 17-115; 17-116; 17-117; 17-1

5、25; 19- 97; 44.-275; 44-276: 44-277; 71-2; SPECIAL DISTRIB TION. For explanation of distribution formula, ee R 310- 90-1. CONTENTS CHAPTER 1. INTRODUCTION Section I. Ccneral _ - n. Description and data _ _ CHAPTER 2. INSTALLATION INSTRUCTIONS Section I. Introduction _ _ _ n. Vchicular installaLion d

6、et-ails _ _ III. Equipment installation details _ _ TV, Adju. tmcnts for operation _ _ _ 11. ConLrol Group AN/GRA-6 and mi ccllancous cquipmenL _ _ CHAPTER 3. OPERATING INSTRUCTIONS Section I. Modes of operation _ _ _ II. ConLrols and instrument. _ _ II I. Frcquency selections _ _ 111. Opcration _ _

7、 _ CHAPTER 4. THEORY OF OPERATION Section I. InLroduction _ _ _ _ II. Rccciving and monitoring circuits _ _ III. Intcrphone and pllsh-to-talk op ration from ontrol Box C-375/VRC _ _ 111. Operation from Control Group AN/GH.A- 6 _ _ 11. Unit thcory _ _ CHAPTER 5. ORGANIZATIONAL MAINTENANCE Section I.

8、Trouble-shooting _ _ _ II. Replacemcnt of parts _ _ _ CHAPTER 6. AUXILIARY EQUIPMENT Section I . Modification Kit MX- 898/GR _ _ If. Thcory of auxiliary operation _ _ III. Miscellaneous auxiliary faciliLics _ _ CHAPTER 7. SHIPMENT AND LIMITED STORAGE AND DEMOLITION TO PREVENT ENEMY USE Sec/,ion I. S

9、hipmcnt and limited storagc _ _ _ II. Dcmolition of materiel to prevent cnemy use _ _ _ APPENDIX I. REFERENCES _ . _ _ II. IDENTIFICATION TABLE OF PARTS _ _ ill. RELATED RADIO SETS _ . _ -_ -_ -_ I NDEX _ _ Paragraplls Paue 1-3 4-18 9-20 21- 26 27- 33 34-35 36- 37 38-41 42-46 47-48 49-56 57-60 61- 6

10、6 67-69 70-75 76-78 79-86 87-91 92-100 101- 103 104-105 106-107 108- 109 1 2 17 17 2-! 29 30 34 34 40 41 46 47 51 52 54 59 66 74 79 81 83 84 85 87 92 103 iii ,.-,.- WARNING HIGH VOLTAGE is l,ecl in the operation of thi equipment DEATH ON CONTACT may result. if operHting personnel fail to observe saf

11、ety pre illltions v RESCUE. In case-of e-Ie-ctric shock, shut 01T the high voltage at once and ground the circuits. If the high vota.ge (annot bC turne-d 01T without ,dClay, free the victim from conlact wilh the Jive conductor as promptly. as po;sihle. ivoid dirCct conI act with e-ither th.e live (O

12、Il(luctor or IhC victims hody. UsC a dry hoal, ?ry (olhing. or oli1Cr nonconductor 10 frCe the. victim. in ax may he used to cut the highvoltage wre. Usc (xtrcmc caution to avoid the resulting elCclnc flash. SYMPTOMS. a. BrCathing stops abruptly in electric shock if the current passes through thC br

13、Cathing center at the-base of the hrilin. If the shock has not be-en too se-vere-, the breath center recovers after a , while and normal breathing is resume-d, provided that a suf ficiCnt supply of air has been furnished meanwhile- by artificial respiration. b. The victim is usually very white or bl

14、ue. The pulse is vCry weak or entirely absent and uncon sciousne-ss is complete. Burns arc usually pre-sent. The victims body mayhecome rigid or stilT in a very few minutes. This condition is due to the action of electricity and is not to be considered rigor mor tis. Artificial respiration must stil

15、l be given, as sev- Cral such cases arC re-portCd to have recovered. The ordinary and general tests for death should never be accCpted. TREATMENT. a. Start arlifidll rCspiration immediately. At the same-time s!nd for a m!(ical officer, if assistance is available. Do not Ipave th! victim unattended.

16、Per form artificial respiration at the-scene of ,the acci dent, unless the victims or operators life is endan gered from such action. in thi r.asc only, remove- the victim to another location. b.ut no f;)rther than vi IS nCcfssary for safCty. If thC nCw location is mor than a fCw fpCt away, artifici

17、al rCspiratipn should be givCn while the victim is he-ing move-d. If the: mp.thod of transportation prohibits thC us! of tht ShaelTer prone-pressure method, oth(r mCthods of resuscitation may be used. Pressure may bp .pxCrtCd on the front of the victims diaphragm, or thC direct mouthto-mouth method

18、may he used. irtificial res. piration, once started, must he continued, withoul loss of rhythm, b. Lay the victim in a prone position, one arm extended, dirCctly overhead, and the other a Im bCnt at Jhe elh()w so that the pack of ttie hand supports the head. The face should be turned away from th( b

19、ent elbow so that the nose and mouth are frce for breathing. C. vpe-n the-victims mouth and Ipmov( any for. eign bodie-s, such as false (e-th, Ch(wing gum, or tohacco. The mouth should r(main ol1Cn, with the tongue ext(nded. Do not permit the victim to draw his tongue back into his mouth or throat.

20、d. If an assistant is available during resuscita. tion, he-should loosen any tight clothing to p!rmit freC circulation of blood and to prevent restrictiOl) of breathing. He. ShobUIId. kSce that the Victim is ke-pt warm, by applYing an ets or other cov . , k h . k (ring. or by applying hot roc s or n

21、c s wrapped in I I . t th . e ot 1 Or pape-r to pre-bvent InJurY t hOf letvlcllm. Th assistant should also e ever wa c 0 sec that th . . C Viet ITn doCs not swallow hiS tonguc. He shOuld eont wipe from the victims mouth any frothy mually saliva that may collect and interfe-re with res. I)! tion. . P

22、lr_ e. The re-suscitating operator should stracldl . t , thO hI ( the VIC 1m s Ig S, or one eg, In such mannCr that: (I) the operators arms and thighs wil I . I hl I . )( vCt tlca w I e app Ylng pressure on the small of the v . tims back; I. . (2) the pe.raors fing:rs arc in a natUral sition on the

23、VIctim s back with the little finge I . Pl). on the last rib; , I ) In (3) the heels of the hands r(sl on . e-IthC1 side of the spine as far apart as conve-niCnt without ai. lowing the hands to slip 01T the victim;, (4) tile operators elbows arc straight and lockcl. f. The resuscitation pr?ce-dure i

24、s as follows: (1) Exert dowmvard prcssur!, not (x,c(din GO pounds, for 1 second. ( 2 ) Swing back, suddenly re(asing pre-ssurc and sit on the heels. . (:H . After 2 seconds rest, swing fonvard again, posItioning the hands xaetly as before, and apply pressure for another second. g. The forward swing,

25、 pOSitioning of the hands and the downward pressure should be aCComplished in one continuous motion, which rCquires 1 second. The release and backward swing rCquire 1 second. The addition of the 2sccond rest makes a total of 1 TLI53eO A. CORRECT POst TIOX. OperatorJ tlbou troight and (od:ttl, Vic- t

26、im Jace turntd alCoy (rom beFIt tlbou alld ftJting 011 back oj homl. B. FOfllilAllD S JI(SC AS/) pOSITIOSISCOr lI.t,/),;. !.Ittle /illgu rflll Otl 1031 rib. C. /JOWNWMlD IIIES SeRf:. ,f,n/3 alld thig rtrlirli. D. 11/:81 POS ITION. o jJ,olor rrl(utif prtUllrtl ,dllt,ly. uin9.J ooc4 -on htrl:t, tlnd r

27、lll, for 2 urond,. seconds for a complete cycle. Until the operator is thoroughly familiar with the correct cadence of the cycle. he should count the: seconds aloud, speaking distinctly and counting evenly in thousands. Exam pIe: one thousand and one, one thousand and two, etc. h. Artificial respira

28、tion should be continued until the victim regains normal breathing or is pro- nounced dead by a mcdical officer. Since it may be necessary to continue resuscitation for several hours, relief operators should be used if available. RELIEVING OPERATOR. ThE relief operator kneels beside the operator and

29、 follows him through several complete cycles. When the relief operator is sure he has the correct rhythm, he places his hands on the operators hands without :lpplying pressure. This indicates that he is ready to take over. On the backward swing, the operator moves and the relief operator takes his p

30、osition. The relieved operator follows through several com plete cycles to be sure that the new operator has the correct rhythm. He remains alert to take over instantly if the new operator falters or hesitates on the eyrle. STIMULANTS. o. If an inhalant stimulant is used, such as aro matic spirits o

31、f ammonta, the individual administer ing the stimulant should first test it himself to see how close he can hold the inhalant to his own nos tril for comfortable breathing. Be sure that the in halant is not held any closer to the victims nostrils, and then for only 1 or 2 seconds every minute. b. Af

32、ter the victim has regained consciollsness, he may be given hot coffee, hot tea, or a glass of water contl11ent, will be prepared in ac ordanc wi lh in trucLion. on the back of the form. d. s other forms and r onl ns aut ho1iz d. Section II. DESCRIPTION AND DATA 4. Purpose of Equipment a. Radio Set

33、A jVRC-7 provides f-m (fre- quency-modulated) radio-telephone facilities within the frequency range of 47 to 5 .4 me (meg- EQUIPMENT FREQUENCY acycles). The :frequcncy rangc of (his sct an 1 of oLher radio equipment with which Lhi et can communicaLe is indicaL d in the 11 quency pec- lJUlll -hart (f

34、ig. 2)_ SPECTRUM M EGA CYCLES o mo o QO i . ,.:.; cn . .; . wi U.Lt.1 ji I f IIII ,Ill . I . . I I I I l 50 55 60 AN/VROI AN/VRO2 RT-67/GRC AN/VRQ-3 RT 81 A . ,-, RT-66/GRC R- IOB/GRe RT-l 0 /GRC RT-66/GRC I I 1 AN/GRC 4 RT-TO/GRC RT- S7/GRe AN/GRC S R-IOt/ORC RT-TO/GRC AN/GRC-6 RT-67/GRC I I 1 RT-T

35、O/GRC . ,-, RT-68/GR I R-IIO/ORC f( RT-lO/ GRC AN/GRC-8 RT-S8/GRC I I IL RT-lO/ORe AN/VRC-5 BCIOOO II T 1 AN/VAC-T I RT -TO/GRC AN/VAC-8 RT-66/GRC AN/VRC- RT-611GRe AN/VRC -10 RT-Ge/GRe AN/VRt- 13 RT-6S/GRC AN/VRt- 14 RT- 611GRe AN/VRC -1 RT-G8/GRC AN/PRC - 6 M A H/PC-e RT-174/PRC-8 AN/PRC-9 RT-175/

36、PRC- AN/PRC- IO RT-IT8/PRC-IO AN/PRC -16 I. RT-?O/GRC SCR-300 BCIOOO ONE flUD fRQ. DEPENDINO UPON CRYSTAL USED. Piuwe 2. Pleg/wnoy speotmm C;/,U1t. 2 o. Radio Set AN/ VRC-7 can be installed and operated in trucks, armored utility vehicles, tanks, and other authorized vehicles (I ar. 7). It is de- si

37、gned primarily for very short-range operation (up to 1 mile) within and between armored, artil- lery, and infantry units. 5. Technical Characteristics Type of transmission and recepLion. Fr quency range _ _ Type of tuning _ _ Operal;ional facilities: Monitoring. Frequency-modulated sig- nads. 47 to

38、58.4 mc. ConLinuous tuning with detent provi ions for pre lecLion of any two frequencies. Push-to-talk operation from local or remote con- trol stations. In Lerphone faci I i Lies. Full-duplex telephone circuit heLween local and remote control uniLs. Communication range _ ApproximaLely 1 mile. TOLal

39、 power drain _ From 16 to 63 watts, depending upon the mode of operation. Power drains are as follows: Input amperage Unit Input voltage Trans- Lund-by mission Se._n_ IJ: _a_=i_l 6. 3 5. 1 5. 3 12. 6 4. 1 4. 3 25. 2 2. 3 2. 5 Interphone amPlifier-l 6. 3 2. 6 3. 4 12. 6 2. (l 3.2 25. 2 1.4 1.8 Tran.

40、rniLter r-f (radio-fre- quency) power output. Approximately 500 mw (milliwaLL ). Receiver a-f (audio-fre- quency) power output. Interphone amplifier a-f power output: et 1 + In Lerphone chan- nel. Set l+Set 2+Inter- phone channel. Approximately 75 mw. 350 mw. 1,800 mw. SOL 2+ InLerphone chan-350 mw.

41、 no!. Microphone input imperl-150 ohms. anco. Audio OULput im- pedalleo. 150 ohm at L ho fixed-level Set 1 + ScI, 2+ inLerphone output of the inLorphone amplifier; Rece i v er band- wi Ith. Recei vcr sensi- tiviLy. 600 ohms at all other audio output terminals. Approximately 80 kc, 6 db (deci- bels)

42、down. 30-db signal-plus-noise to noise ratio with %-uv (microvolt) input signa!. 6. Table of Components a. A table of components for Radio Set ANj VRC-7 is shown in table 1. All dimensions and weights are approximate, Although there is only one listing of components, the availability of Power Supply

43、 PP-44 jGR, PP-28ljGRC, or PP-282jGRC indicates that there are actually three basic ets. A basic set which includes Power Supply PP-448/ GR is used in 6-volt systems; for 12-volt or 24-volt systems the ba ic unit must in- clude Power Supply PP-281jGRC or PP-282/ GRC, respectively. o. As indicated in

44、 paragraph 2, a basic set does not, in itself, con titute an operating system. For installation and operation in particular vehicles, the additional equipment listed in paragraph 7 also is required. 7. Additional Equipment Required a. To install and operate the basic radio set listed in table I, an

45、installation unit also is re- quired. The operating voltage available in the vehicle determines whether a 6-volt, a 12-volt, or a 24-volt basic set is required. The type of vehicle determines what installation unit is sup- plied (or must be requisitioned), since such items as audio accessories, cabl

46、es, junction boxes, and mounting hardware vary with the type of vehicle. o. Table II indicates the vehicular installation units which can be used with each ba ic radio set. For example, a basic Radio Set ANjVRC-7 in- stalled in a 1,4 -ton 4 x 4: truck, which ha a 12-volt storage battery, utilizes installation unit 2S450Z- 7-V26j50. The stock number for the basic radio set (2S4