SCR-522A_SCR-542A_user_AN16-40SCR522-2_1944.pdf

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1、-*- AN 16-405CR522-2 HANDBOOK OF OPERATING INSTRUCTIONS for RADIO SETS SCR-522-A and SCR-542-A This handbook replaces AN 08-405CR522-2 dated 9 May 1944. (For Official Use Only) se 3585 A -*- .t1.pproved 30 DECEMBER 1944 AN 16-40SC522-2 Published under joint authority of the United States War and Nav

2、y Departments and the Air Council of the United Kingdom. SECURITY NOTICE FOR U. S. PERSONNEL: This document contains information affecting the national defense of the United States within the meaning of the Espionage Act, 50 U.S.c., 31 and 32, as amended. Its transmission or the revelation of its co

3、ntents in any manner to an unauthorized person is prohibited by law. (AR 380-5) (ARTS 75V2 . 1-1 2. Power Supply . 1-1 a. Radio Set SCR-522-A . 1-1 h. Radio Set SCR-542-A . 1-1 3. Temperature Limitations . 1-1 4. Transmission-Reception Range . 1-2 5. Principal Components . 1-2 a. Equipment Supplied

4、. 1-2 h. Equipment Required But Not Supplied ( Installation) . 1-3 c. Equipment Required But Not Supplied ( Testing and Aligning) . 1-4 II. INSTALLATION AND ADJUSTMENT . 2-0-2-24 1. Preliminary Tests . . . . . . . . . . . . . . . . . . . . . 2-0 a. Using Test Equipment IE-19-( ) . 2-0 h. Using Test

5、Equipment IE-36 . 2-1 2. Installation . 2-5 a. Transmitter-Receiver Assembly . 2-5 h. Dynamotor Unit PE-94-() . 2-5 c. Jack Box BC-629-B or BC-631-B . 2-5 d. Radio Control Box BC-602-B or BC-602-D . 2-6 e. Antenna Mast AN-I04A or AN-I04-B. 2 j f. Microphones . . . . . . . . . . . . . . . . . . . . .

6、 . 2-6 3. Making of Cables . : . 2-8 a. Disassembly of Plugs . 2-8 h . Wiring and Reassembly of Plugs . 2-8 4. Cable Connections . . . . . . . . . . . 2-9 5. Circuit Protection Devices . 2-9 6. Testing Radio Transmitter BC-625-A or BC-625-AM (Using Test Equipment IE-36) . 2-9 7. Transmitter Tuning (

7、Using Test Equipment IE-19-( ) ) . 2-13 a. Equipment Required . 2-13 h. Initial Procedure . 2-13 c. Tuning of First Channel . 2-14 d. Tuning Remaining Channels . 2-14 e. Adjusting Antenna Coupling Control. 2-14 f. Final Tuning . , . 2-15 g. Tuning Checks . 2-15 h. Tuning Single Channel Out of Adjust

8、ment . 2-15 i. Transmitter GAIN Control Adjustment . 2-15 Section 8. Transmitter Tuning (Using Test Equipment IE-36) . 2-16 a. Equipment Required . 2-16 h. Initial Procedure . 2-16 c. Tuning Channel A . 2-1 Z 0- I .C:Io o n :;v (J1 I) I) I I) AN 16-405CR522-2 Section I ,Paragraphs 1-3 SECTION I GENE

9、RAL DESCRIPTION SPECIAL NOTICE Radio Set SCR-522-A differs from Radio Set SCR-542-A only in the pr;marypower supply voltage and the dyna motor unit used. This handbook applies to both radio sets except as oherwise noted in the text. 1. GENERAL. d. Radio Set SCR-522-A or SCR-S42-A (see fig. 1-1) is :

10、lirborne equipment providing two-way radio teie phone communication between aircraft in flight and between aircraft and ground stations. h. Operation may take place on any one of four crystal-controlled channels lying within the frquency range of 100 to 156 meg.acycles. Only remote control is provid

11、ed. Continuous tone transmission on any channel on which the equipment is operating is provided by the action of Contactor Unit BC-608-A for Radio Trans mitter BC-625 . Al-1 (a later model of the transmitter) while continuous tone transmission on channel D only is provided by the action of the. cont

12、actor unit for Radio Transmitter BC-625-A 2. POWER SUPPLY. d. RADIO SET SCR-522-A.-The power required to operate Radio Set SCR-5t2-A is 11.5 amperes total input current at 28 volts for transmission, and 11.1 amperes total input current at 28 volts for reception. The radio set uses Dynamotor Unit PE-

13、94-()* (see, figs. 1-2.and 1-3) which is upplied with power from the 28-volt battery of the airplane. Note The equipment will operate satisfactorily from an ungrounded power source, but a grounded negative power source is preferable. h. RADIO SET SCR-542-A The power required to operate Radio Set SCR

14、-54A is 23 amperes total input current at 14 volts for transmission, and 22.2 amperes total input current at 14 volts for reception. This radio set uses Dynamotor Unit PE-98-A which is supplied with power from the 14-volt battery of the airplane., 3. TEMPERATURE LlMITATJONS. The equipment is designe

15、d to operate satisfactorily in the temperature ran,ge from -.,-5-8F (-50C) to +122 F (+50C). A small percentage of all equipmnts man ufactured have been subjected, as a type test; to a humidity of 90 to 100 percent with the temperature,held at+122F (+50C) for a period of 24 hours and then checked fo

16、r satisfactory operation. I Any reference to Dynamotor Unit PE-94-( ) appli(!5 to Dynamotor Units Pf.94.A, PF.94-B. and PE-94C. Figure J -2. Radio$et SCR-522-A in Case CS-IO-A t1eft and Dynamotor Unit PE-94-A or PE-94-8 (right 1-1 Section I Paragraphs 4-5 AN 16-40SCR522 . 2 4. TRANSMISSION-RECEPTION

17、 RANGE. Altitude of Airplane Ahote Terrain (,feet) Approximate Range (miles) The following table lists the approximate range of transmission and reception during communication be tween an aircraft and a ground station over level country. 5. PRINCIPAL COMPONENTS. 1.000 3,000 5,000 10,000 15,000 20,00

18、0 . . . . . . . . . . . . . . . . . . . . . . . a. EQUIPMENT. SUPP.UED.Principal components supplied with the radio st re listed in the table below. Quantity 8 U. S. Signal Corps Description Radio Transmitter BC-625-A or BC-625-AM* Radio Receiver BC-624-A or BC-624-AM, or BC-624-Ct Rack FT-244-A Cas

19、e CS-so-A O( CS-80-C Mounting FT-48S (used with Case CS-80-C) Crystal Unit DC-11A, or DC-16 or DC-26 or CR-IA/ AR Dynamotor Unit PE-94-A or PE-94-B orPE-94:C Dynamotor Unit PE-98-A:j: Mountinii:-FT-498 (used with Dynamotor Unit PE-94-C) - Britiib Air Ministry Description 1 Radio Transmitter Unit, Ty

20、pe T.5017 1 Radio Receiver Unit, Type R.5019 1 Rack, Type 5009 Case, Type TR.5043 Crystal Unit Dynamotor Unit, Type 5016 Dynamotor Unit, Type 5015 British Ref, No. 1101)/146 1100/147 11OD/148 IIOD/145 llOXN/ llOK/248 llOK/247 *Radio Transmitter BC625A and BC625AM arc electrically and physic:lfly int

21、erchangeable. tRadio Receiver BC624A, BC624AM and BC624C arc electrically and physically interchangeable. *This dynamotor unit used with Radio Set SCR542A. OnT-all Dimensions (inches) 30 70 SO 120 150 180 Weight (pounds) 49 .25 0.13 Each .024 Each 37 37 .25 figure J -3. Radio Set 5CR-S22-A in Case C

22、5-80-C .With Mounting fT -488 (left) 01 d Dynamotor Unit PE-94-C With Mounting FT -498 (right 1-2 AN 16-40SCR522-2 Quantity U. S. Signal Corps Britisb .Air Minislr:y Deuription Description 1 Jack Box BC-629-B or Jack Box BC-631-B 1 Package of Maintenance Parts 1 Antenna Mast AN-I04-A or AN-I04-B 1 P

23、lug PLPI67 Socket, Type W149 or Plug PL-QI67 (may be used Socket, Type WlSO on Jack Box BC-629-B; not used on Jack Box BC631-B) or Plug PL-167 1 Plug PL-P169 Socket, Type W161 or Plug PL-QI69 Socket, Type W162 or Plug PL-169 1 Plug PL-P170 Socket, Type W163 or Plug PL-Q170 Socket, Type Wl64 or Plug

24、PL-170 1 Plug PL-Pl71 Socket, Type W159 or Plug PL-QI71 Socket, Type W160 or Plug PL-I71 1 Plug PL-PI72 Socket or Plug PL-Q 172 Socket, Type W165 or Plug PL-I72 1 Plug PL-PI73 Plug, Type 156 or Plug PL-Q173 Plug, Type 150 1 Plug PL-259* Plug, Type 1 1 Radio Control Box BC602-B Controller, Type 5003

25、or BC-602-D Britisb Rei. No. 110A/241 10H/403 10H/404 10H/415 10H/416 lOH/417 10H/418 10H/413 10H/414 1l0H/459 10H/419 110H/584 1l0H/507 . 110H/1257 110J/71 Over-all Dimensions (inches) 42%4 x 22%4 x 16Y64 41;16 x 220/64 x 16Y64 ,2% L., 11%4 Dia. 2%4 H., 24%4 L., 11%4 Dia. 2 L., 12%2 Dia. 2%4 H., 21

26、%6 L., 12%2 Dia. 12%2,L.1%6 2 L., 1 o/64 Dia. 2%2 H., 31%4 L., 15%4 Dia. 15%4, L. 12%4 2 L., 12%2 Dia. 264 H., 21%6 L., 12%2 Dia. 12%2 L., 18%4 28%4 L., 110/64 Dia. 280/64 H., 21%2 L., 110/64 Dia. 110/64; L. 18%4 22%4 L., 1 Dia. 25;14 H., tVs L., 1 Dia. 40/64 L., 11%2 7% x 5fJ16 x 21j:z Section I Pa

27、ragraph 5 Weigbt (pounds) 0.60 0.25 0.27 0.29 0.31 0.34 0.56 0.30 0.29 0.28 0.29 0.21 0.35 2.41 Antenna Mast ANI04B is an improved version of the antenna mast as far as electrical band coverage is concerned and is mechanically interchangeable with Antenna Mast ANI04A . Adapter M359 shall be used whe

28、n a right angle approach to the antenna base is desired. Field modification of Radio Control Box BC602B in which the TRREM. switch has been disconnected and the switch has been removed com pletely have resulted in Radio Control Box BC602D. h. EQUIPMENT REQUIRED BUT NOT SUPPLIED ( INSTALLATION). - Th

29、e following table includes equipment required for satisfactory operation but not included with the radio set. Quantity 1 It It U. S. INSTALLATIONS Name of Unit Headset HS-33 or Headset HS-38 Microphone T-17, T- 17-B, T-l7-C, T-l7- D or Microphone T-30-( )* or Microphone T-34-A or Required Characteri

30、stics 600 ohms impedance 600 ohms impedance Quantity 1 Quantity Name 01 Unit Required Characteristics Microphone T.44( )* or Microphone ANB M-C1 BRITISH INSTALLATIONS Name of Unit Cord CD-495 Headset, Type 32 (Ref. No. 10A/ 13466) or Required Characteristics 150 ohms impedance .Refers to any issue o

31、f a specific series. tRequires Microphone Adapter M299. ;Required by British electromagnetic microphones and British headsets. 1-.3 Sections I - II AN 16-40SCRS22-2 BRITISH INSTALLATIONS (Continued) c. EQUIPMENT REQUIRED BUT NOT SUPPLIED Quantity 1 Name of Unit Headset, Type B (Ref. No. lIOA/ 8542)

32、Microphone, Type 21 (Ref. No. lOA/ 11994) or Microphone, Type 26 (Ref. No. 10A/ 12571) Microphone Adapter M-299 Source of doc power Required Characteristics 24,000 ohms impedance 250 ohms impedance, electromagnetic 250 ohms impedance, electromagnetic 12 or 28 volts Used only when high impedance carb

33、on microphones are used. (TESTING AND ALIGNING).-The following table lists equipment required for testing and aligning but not supplied with the radio set. Quantity Name of Unit Test Equipment IE-36 Signal Generator 1-96-A Test Equipment IE19-( )* (includes the following) : Field Strength Meter 1-95

34、-( )* Test Set 1-139-A Signal Generator 1-130-A Battery Box BX-33-A *Refers to any issue of a specific series. SECTION II INSTALLATION AND ADJUSTMENT Note The radio set is normally shipped from the factory with all vacuum tubes installed. 1. PRELIMINARY TESTS. Before installing the transmitter-recei

35、ver assembly in an aircraft, check the operation of the transmitter receiver with either Test Equipment IE-19-( ) * or IE-36. (See figs. 2-14 and 2-15.) a. USING TEST EQUIPMENT IE-19-0. ( 1) Place the transmitter-receiver assembly on the test bench. ( 2 ) Loosen the Dzus fasteners on the rack covers

36、, raise the covers, and slide them away from the center. (3) Connect Dynamotor Unit PE-94-0* to the 12- contact socket on Rack FT-244-A. Connect Radio Con trol Box BC-602-B or BC-602-D (fig. 2-7) and Jack Box BC-629-B (fig. 2-4) to the IS-contact socket on the rack. ( 4) Connect the dynamotor unit t

37、o a 28-volt doc source of supply or 14-volt for Dynamotor Unit PE- 98-0* (5) Depress channel A push button on the radio control box. The top channel slides on both transmitter and receiver frequency shifter assemblies will be actuated. (6) If the shifter mechanism does not operate when channel A is

38、selected, press channel release button 426 in Rack FT-244-A (fig. 2-1) because the motor rna be stopped on an open contact position. Any issue letter is applicable. 1-4-2-0 (7) Depress channel push buttons B, C, and D and note the action of the shifter mechanism. (8) Connect Antenna Mast AN-104-A or

39、 AN-104- B to Socket SO-153 on the rack by means of a suitably prepared length of coaxial cable. (9) Insert the proper crystals for the pre-tuned channels in the transmitter. (Refer to par. 7b(2), this section.) Depress channel A push button. ( 10) Set up Field Strength Meter 1-95-( )* and extend th

40、e antenna on the meter to the desired length, depending on the strength of the signal. Turn the ON OFF switch on the meter. to ON. Adjust the ZERO ADJ. control so that the RELATIVE FIELD STRENGTH meter on the field strength meter reads zero. Set the TUNING dial to the frequency of the transmitter an

41、d adjust the dial for a maximum reading on the RELATIVE FIELD STRENGTH meter. ( 11) Plug Microphone T-34-A or T-44-0* into Jack K-49 through the jack box. Place the T-R-REM. switch in the T position and speak into the micro phone. There should be a slight increase in the reading of the indicating me

42、ter on Field Strength Meter 1-95-( ) *, indicating modulation. ( 12) Do not disturb the transmitter GAIN con trol if it is locked with glyptal or with a locking nut. If t4e control is not locked, advance, if necessary, to secure modulation. Note The GAIN control has been replaced by a fixed resistan

43、ce network in later models of Section II AN 16-40SCI522-2 Paragraph 1 Radio Transmitter BC-625-AM, and no adjust-(5) Turn the OFF ABCD switch on the control ment is necessary. (Refer to sec. V, par. la.) unit to A. The top channel slides on both transmitter and receiver frequency shifter assemblies

44、will be actu- (13) Leave the T-R-REM. switch in the T po- ated. sition (or actuate the microphone press-to-talk button if Radio Control Box BC-602-D is in use) and repeat step ( 11) above n channels B, C, and D. If proper operation of any channel is not obtained or if the channel frequencies have to

45、 be changed, retune in accordance with the instructions in paragraph 7 or 8 of this section. ( 14) Place crystals of the proper operating fre quency in the channels to be used in the receiver. (Refer to par 10c, this sec.) (15) Depress channel A push button. (16) Set the T-R-REM. switch on the radio

46、 con trol box to R. Tlre equipment is normally in the re ceive position if Radio Control Box BC-602-D is in use. Connect a headset to Jack K-49 through the jack box. (17) Set the receiver AUDIO control (236) and RELAY or SQUELCH (237) to their clockwise positions. Note The RELAY control has been replaced by the SQUELCH control in Radio Receiver BC-624-C. (Refer to sec. V, par. lb.) (lfl) With no signal applied, turn the RELAY or SQUELCH control counterclockwise until the sig . nal is sharply cut off. Make the final setting of the R