WS-19_Mk2_user_1942.pdf

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1、r. I , .1 NOT TO BE PUBLISHED The iaformation given in this document ilJ Dot to be com mwticated ehher directly, or indirectly, to the PlIess or to any person not holding an official position in His Majesty Ser.vice WORKING INSTRUCTIONS WIRELESS SET No. 19 lIARK II (As MaBufactured in Canada and the

2、 U. S. A.) (ReI. NG. PC 90772C195) PUblished by: The Director of Signals Design, Army Engiueering Design BlIanch, Department of MunitioDII and Supply, Ottawa, Canada. . Approved by: The Chief of th 1st Jnly. 14, -: -) NOT TO BE PUBLISHED The information given in this document is not to be com munica

3、ted either directly, or indirectly, to the Press or to any person not holding an official position in His Majestys Service. WORKING, INSTRUCTIONS WIRELESS SET No. 19 MARK II (As Manufactured in Canada and the U. S_. A.) (Ref. No. PC 90772C-I95) Published by: The Director of Signals Design, Army Engi

4、neering Design Branch, Department of Munitions and Supply, Ottawa, Canada. Approved by: The Chief of the General Staff, Department of National Defence, Ottawa, Canada. Ist July, 1942. For installation instructions refer to installation prints and Qther def4iJs in envelope packed with Installation Ki

5、t. / -e _ _ _ _ WIRELESS SET No. 19 MARK II 1 . 1 1 .2 Purpose Contents INTRODUCTION CHAPTER I GENERAL DESCRIPTION Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1 2 1 .3 The A Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 J .3. 1 Frequency Range .

6、. . . . . . . . . . . . . . . . 3 1 .3.2 Aerials . . . . . . . . . . . . . . . . . . . . . . . . 3 1 .3.3 Receiver Circuit . . . . . . . . . . . . . . . . . . 4 1 . 3.4 Sender Circuit . . . . . . . . . . . . . . . . . . . . . . . . 4 1 .3.5 Aerial Circuit . . . . . . . . . . . . . . . . . . . . . .

7、5 1 .4 The B Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 .5 The Intercommunication Amplifier . . . . . . . . . . . . . . 7 1 .6 The Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1 .7 Current Drain . . . . . . . . . . . . . . . . . . . . . . . . . . .

8、 8 1 .8 The Control Units and Junction Distribution Boxes. . 8 1 .9 The Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CHAPTER II WORKING INSTRUCTIONS 2 . I Preliminary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 0 2 .2 Tuning the A Set . . . . . . . . . .

9、 . . . . . . . . . . . . . . . . 2 1 2 .2 . 1 Tuning and Netting of Receiver . . . . . . . . . . 2 1 2 .2 .2 Tuning of Sender . . . . . . . . . . . . . . . . . . . . 2 2 2 .2.3 The Flick Dials . . . . . . . . . . . . . . . . . . . . . 2 3 2 .3 Tuning the B: Set . . . . . . . . . . . . . . . . . . .

10、. . 25 2.4 The Control and Intercommunication System . . . . . . 26 2 .5 Checking for Correct Operation . . . . . . . . . . . . . . . 27 iii Fig. Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 DIAGRAMS Page Block -Diagram . . . . . . . . . . . . . . . . . . . . . . 77 Schematic of Variometer 7 9 Complete Schema

11、tic of Wireless Set. No. 19 Mk. II . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Schematic of Supply Unit . . . . . . . . . . . . . . . . . . 83 Top Plan of Chassis . . . . . . . . . . . . . . . . . . . . . . 85 Underneath Plan of Chassis 87 Fig . 7 Controls on Front Panel . . . . . . .

12、 . . . . . . . . . . . 8 9 Fig. 7 A Flick Control . . . . . . . . . . . . . . . . . . . . 8 9 Fig. 8 Fig. 9 Wiring Layout of Infantry Tank Mk. III Installa- tion . . . . . . . . . . . . . . . . . . . . . . . . . 9 1 Wiring Layout of U. S. Medium Tank M4 . . . . . 93 PHOTOGRAPHS 1 . Front view of Set

13、 and Supply Unit . . . . . . . . . . . . . . 6 1 2. Front view with Guard and Waterproof Cover . . . . . 63 3A. Inside view of Sender/Receiver (Top) . . . . . . . . . . . 65 3B. Insid.e view of Sender/Receiver (Underneath) . . . . 67 4. Inside view of Variometer . . . . . . . . . . . . . . . . . . .

14、 . . 6 9 5. Inside view of Supply Unit . . . . . . . . . . . . . . . . . . . 7 1 6. Installation Equipment for Infantry Tank Mk. III. . . 73 7 . Installation Equipment for U. S. Medium Tank M4 . . 75 1. TABLES Overall Dimensions, Weights Page 1 2. Facilities of Complete Station . . . . . . . . . 3.

15、Aerials 3 4. Valves (Designations, Types, Functions and Circuit Details) . 1 0 5. Controls and Adjustments . 14 6. Control System on Infantry Tank Mk. III . . . . . . . . . . 28 7. Control System on U. S. Medium Tank M4 . . . . . . . 31 8. Normal Meter Readings . 34 9. Parts and Component List . 35

16、10. Set and Standard Kit . 51 II. Interchangeability List . . . . . . . . . . . . . . . . . . . . . . . 55 ABBREVIATIONS A A Set MA Milliampere AE Aerial MC Megacycles AF Audio Frequency per second AVC Automatic Volume MCW Modulated Continu- Control ous Wave B B Set MFD Micro-farad BFO Beat Frequenc

17、y MMF Micro-micro-farad Oscillator OSC Oscillator CW Continuous Wave PA Power Amplifier DF Direction Finding RF Radio Frequency H Henry R(f Radio Telephony HF High Frequency (Speech) HT High Tension SIR Sender/Receiver IC Intercommunication V Volts Amplifier W Watts LT Low Tension v I NT R ODU CT I

18、O N WIRELESS SET NO. 19, MARK II (As Manufactured in Canada and the U. S. A.) 1. Although mechanically and electrically interchangeable in the major components, a number of modifications were consid ered essential, and were incorporated prior to manufacture both in Canada and the U. S. A. Primarily,

19、 these modifications were introduced in order to accommodate Canadian and U. S. A. man ufacturing processes. 2. From the viewpoint of the operator, there should be no dif ference between the British and the Canadian Set. In order to assist operators to master quickly the operation of the Set, and, t

20、herefore, to derive the maximum of performance in the field, the operating instructions have been recorded in somewhat greater detail than in the British pamphlet. 3. In order to assist maintenance personnel, a table has been added (Table XI), in which the major modifications in CanadiarJ and Americ

21、an Sets have been recorded. vii c J! I 1.1 CHAPTER I GENERAL DESCRIPTION PURPOSE Wireless Set No. 19, Mk. II, has been designed to be used in Armoured Fighting Vehicles (A. F. V.), in various Wire less Trucks, and as a ground station. The Set consists of an A Set (SenderReceiver), a B Set (SenderRec

22、eiver) , an Intercommunication (I.C.) Amplifier, and a Supply Unit. Table I shows weight and overall dimensions of Set and Supply Unit, Table II shows the facilities, purposes and ranges of the complete No. 19 Set, Mk. II. Unit TABLE I WEIGHTS AND DIMENSIONS Weight Dimensions in Inches in lb. Length

23、 Depth Width Sender/Receiver . 40 l7 8 12 Supply Unit . Carrier No. 1 .0 . Wireless Set No. 19, comprising Sender, Receiver, Supply Unit and Carrier No.1 . 28 6 8 12 14 86 27 10 l3 TABLE II FACILITIES PROVIDED BY A COMPLETE STATION No. 19, MK. II Panel Frequency Type of Item Desig Range Purpose Serv

24、ice Range - nation Mc/s A-Set A Z-8 Communica R/T 10 miles tion: troop C. W. R/T be- to base or M. C. W. tween ve- troop to hicles in troop motion with 8 rod aerial on each vehicle (Table continued on next page) 1 T ABLE II-Continued FACILITIES PROVIDED BY A COMPLETE STATION No. 19, MK. II-Continued

25、 Panel Frequency Type of Item Desig- Range Purpose Service Range nation Mc/s . B-Set B 230-240 Communi-R/T 1,000 yards Mc/s cation be-between ve- tween ve-hicles in hicles only motion with in a troop half-wave aerial sup- plied Intercom- Speech Communica- munication I-C tion among Speech Amplifier o

26、nly the crew The following valves are used: Quantity Designation Type 6 6K7G I? R. F. Pentode 2 6K8G Triode-Hexode 2 6V6G Output Pentode 1 6B8G Double Diode-Pentode 1 6H6 (ARDD5) Double Diode 1 E-1148 (CV6) Triode (low capacity) 1 EF50 (ARP 35) R. F. Pentode 1 807 (ATS 25) Beam Tetrode 1.2 INSTALLAT

27、ION A complete station is packed in two Kits : One is known at Set and Standard Kit, the other one as Installation Kit. The Sender-Receiver (A and B Set, I.e. Amplifier), Supply Unit, Variometer and all other parts which are com mon to all installations, are packed in one box. This is called the Set

28、 and Standard Kit, and it comprises all the items contained in the British Set Kit and Standard Kit. (Table x.) 2 . For every type of vehicle in which the No. 19 Set is used. a second separate kit. called the Installation Kit. is pro vided. which contains all the parts necessary for the installa tio

29、n in a particular vehicle. 1.3 The A Set. (Figs. 1. 2 . 3. 7. Tables III. IV. V.) 1.3.1 FREQUENCY RANGE The Set covers the frequency Range from 2 Mc/s( 150M) to 8 Mc/s (37.5M) in two bands. One band covers from 2 Mc/s ( 1 50M) to 4Yz Mc/s (66.6M) and the other from 4 Yz Mc/s (66.6M) to 8 Mc/s (37.5M

30、). The desired band is selected by switch S 1 1 A (See Fig. 7). which will be re ferred to as the Band-Change switch. 1.3.-2 AERIALS The A Set is designed primarily for use with 8 or 1 2 rod aerials of the type supplied with the equipment. Where short range communication only is required under condi

31、tions in which the 8 aerial would be regarded as too conspicuous. a single 4 section may be used. Any of the usual types of elevated aerials can be used with the A Set. and the conditions governing the connec tion and tuning of the two most suitable types are set out In Table III. Description of Aer

32、ial Whip aerial. Three Ft. sections (Vertical) TABLE III AERIALS FOR A SET Mthod of Coupling Method of Tuning , 4 Mounted on Aerial Base Tuned for maximum No.8; connected to Vari- reading of test meter by ometer. which is con-successive adjustments nected to AE socket on of Variometer and P.A. panel

33、. Tuning. Three-quarter wave end- Erected at the greatest Tuned as above. fed aerial (Horizontal) possible elevation; con-Length of wire to cover nected to Variometer the appropriate fre- which is connected to AE quency bands should be: socket on panel. The use Length Frequency of a proper Earth wil

34、l greatly improve radiation. 250 2-2.65 Mc/s 185 2.6-3.5 Mc/s 150 3.45-4.5 Mc/s 110 4.45-5.6 Mc/s 90 5.55-6.65 Mc/s 70 6.6-8.0 Mc/s 3 1.3.3 RECEIVER CIRCUIT (Fig 3) (I) (2) (3) (4) ( 5) (6) The receiver is of the Superheterodyne type. The inter mediate frequency (I.F.) is 465 Kc/s. The receiver comp

35、rises the following stages: Stage Valve Type Designation Signal Frequency 6K7G VIA Oscillator, Frequency Changer 6K8G V2A LF. Amplifier 6K7G VIB LF. Amplifier 6K7G VIC Detector, A.V.C., Audio Amplifier 6B8G V3A Heterodyne Oscillator (Beat Frequency Oscillator, B.F.O.) 6K8G V2B 1.3.4 SENDER CIRCUIT (

36、Fig. 3) In order to eliminate separate adjustment of the sender, and to assure that always the same frequency is transmitted and received, the outputs of the receiver oscillator and the Het. Oscillator are mixed in Valve V.2.B to reconstitute a sender frequency equal to the frequency to which the re

37、ceiver is tuned. This frequency is selected by the tuned buffer stage V.5.A. (ARP 35 or EF 50), and the output of this stage is applied to the grid of the Power Amplifier (P.A.)-stage V.4.A. (807). Bias for the P.A. stage is obtained by recti fication from the output of V.5.A. in the diode V.6.A. (A

38、RDD 5 or 6 H 6), and the input voltage and bias are held constant by bias applied to the grid of V.5.A. and ob tained from the delayed diode rectifier V.6.A. (ARDD 5 or 6 H 6). The output of the Power Amplifier is coupled to the aerial by means of a low impedance line Aerial Feeder No. 1, connected

39、to a suitable tapping on the tank coil, L.3.A. The aerial is inductively loaded to resonance by means of the Aerial Tuning Variometer L.1.A, which is located in all cases as near as possible to the base of the aerial. 4 . (I) (2) (3) (4) (5) (6) The Sender comprises the following stages: Valve Stage

40、 Type Designation Receiver Oscillator , 6K8G V2A Heterodyne Oscillator and Mixer 6K8G V2B Buffer Stage ARP35 V5A or EF50 Power Amplifier 807 V 4A Modulator (on R.T.), A.F. Oscillator 6B8G V3A and Modulator (on M.C.W.) - Grid Bias cessary for the plug to be pushed right home. The procedure to tune fo

41、r maximum output is the same as for RjT. When working on C.W., however, it is necessary to press the key when tuning for maximum out put. (If the key is not pressed, no aerial current will flow.) When receiving, the plug should be partially withdrawn. (If the key remains pushed in the set stays on S

42、end and no reception is possible.) Pushing the plug in, switches the Set to Send again. If the output circuits have been tuned for maximum output on R/f and the set is switched to C.W . and vice versa, it is necessary to retune them slightly, follow ing the same procedure as before. The Variometer n

43、eeds re-adjusting whenever the fre quency of the set or the length of the aerial is altered. When you set up for Flick working, note the Variometer settings for the two frequencies on the writing tablet at the right-hand end of the set, and in your log, so that you can re-set the Variometer quickly

44、when changing frequency. There are two scales on the Variometer 0-1 00 and 200- 1 00. The lower frequencies will have a stting on the lower scale (0- 1 00). the lowest frequency near I 0; high frequencies will have a setting on the higher scale (200-1 00). the highest near 1 1 0. WARNING. The positi

45、ons where you change from one scale to another are marked by red bands. Never use a set ting covered by either of these bands. If you find a setting on or a little below either red band, say between 80 and 1 00 or between 1 80 and 200, always see if you can get better results at the top of the other

46、 range. 2.2.3 THE FLICK DIALS (Fig. 7a) The Flick mechanisms fitted to the two mam dials ( Frequency Mc and P.A. Tuning) enable the adjust ments of these controls to be pre-set for two frequencies. An almost instantaneous change from one frequency to another is thus made possible. Adjacent to each m

47、ain tuning dial is an auxiliary control marked FLICK, SET. and TUNE. In the FLICK position, two pre-determined tuning settings are indicated by spring-loaded followers, which drop into notches in two discs mounted on the condenser shaft. The coloured indicators above the dials indicate which of the

48、two discs is engaged. In the FLICK position, the slow motion drive is dis engaged. With the Flick controls set to TUNE, the Flick mechanism is disengaged and the slow motion drive functions in the normal manner. 23 To operate the FLICK DIALS proceed as follows: I. Set Band-change switch (S 1 1 A) to desired Band. 2. Engage either the blue