¡l" ~ .. . ï ¡" I . 0 i i I ¡ . I r WAR 0 E PA R TM EN T TEe HN ie A L ....-. i';-~'li t.;d~;,~~.:....;.,..., ,. '",..,' f ..~ .. :;:'::'-'::;~'.~:~"::' 'i L ¡; f.., i. t' ,.' I..... ; "INSTALLATION OF. R~DIO ,. . ','-,''' ''':,- . ,- .",~.-",._:",.., -',: . .. '.. -, -.-.,". '.\..t.:,:I;-::i'l,_:.:;'-':.'-...'..... ,'-,~..:;'::;:'~;~::t/ ;'.1;" I ";':/,0.:V;:t~' ':',i~' .';, ;',:...c.-.. AND I~TERPHONE ,;~,-;~:..:~;~:.;.- ,- -,.,"'. . ',__-, :, :'" ,/.': ~; d:: ,,":. ,':;. . 'Z"";,",,--:,'; ~EQ,UIPMENT. IN..~I . ",._:' .~ , ...............Tf...ddA. :..":k.-~~)-7S. 'MS' .AND ....,\'//i...i "':;:'.,...""" ...,..J,~:~'.I.. . . ¿,\:~:: . ,~,;~,. .... ';,:,";::'-,:.,; '-:. ,'~ ;"~' : ."(...-.....,'.' .,......... ~..,..;;...,-, - TTER -1\ie \nfor- , .' F RESTRICTED MA . .... . .cs RES1RltTE DISSEMINA TlON 0 '. cnd t\ie essential d"lcredc.nsl\, . ,,~ . v. '. cd in resÙicl~d document' cmonknown to be In t e, . motion contain . 1 be given 10 cny Pd' L d loyalty' cnd ; d' ~erlOI mey . . (un ouote . r 'de m... ons or 'L.' ..". òr ~strl . dStates cnd to pe~ rk but win not oe . . f the Unite, . G' .. . ment wo i . .\...-;. service o. opiircting In ovctn . L 'i,rhoriied ml ltory.,. . who c~ co h' exc~pt oy a A A.)' ' diSCTdlO~' . the public ort~~,t e pr~ . R 380-5, 15 Mar 1 ~~. communicated to '. (See also per. 2.3b, t,. . , ' pub\ic Te\ationsogencies.. . .' J;M:'" / \ '-. WAR DEPARTMENT . DECEMBER 1944 ; ;~ -; ¡ ~. J.. , '. ,: ,",( : -, ,-, . ~~...~.__..~._~.v~.,t~...~-i...!._--.;.~~:_.;ó..¡:::..."'.ií~.._..",'., ..,~---'_,-'"___~...-~~__...___._________
TTER -1\ie \nfor-, .' F RESTRICTED MA . .... . .cs
RES1RltTE DISSEMINA TlON 0 '. cnd t\ie essential d"lcredc.nsl\, . ,,~. v. '. cd in resÙicl~d document' cmonknown to be In t e, .
motion contain . 1 be given 10 cny Pd' L d loyalty' cnd; d' ~erlOI mey . . (un ouote .r 'de m... ons or 'L.' ..".òr ~strl . dStates cnd to pe~ rk but win not oe .. f the Unite, . G' .. . ment wo i . .\...-;.service o. opiircting In ovctn . L 'i,rhoriied ml ltory.,.. who c~ co h' exc~pt oy a A A.)' 'diSCTdlO~' . the public ort~~,t e pr~ . R 380-5, 15 Mar 1 ~~.communicated to '. (See also per. 2.3b, t,. . , 'pub\ic Te\ationsogencies.. .
RESTRCTD. DISSEMINATION OF RESTRICTED M¿TTER. The inortionc:taed in rected docents and the estial chacterstics of retricted material may be gito any pc know to be in the aece of the Unite States and to pens of undoubted loyaty andci who ar copeating in Gornent wok, but will not be CXuiuncate to the public or to theprs ace by authorid milita public retins agencies. (Se alii pa. 23b, AR 3roS, is Ma...)
U.it~å Sttlt~i GO~~r1m~nt Printing Offce
W tlinington: 19/4
WAR DEPARTMENT,
WASHINGTON 25, D. C., 5 DECEMBER 1944...
TM 11~2720, Installation of Radio and Interphone Equipment in Light
Tanks M5 and M5A1 is published for the information and guidance of all ~
concerned.
lAG 30.7 (6 Nav 44)\
By ORDER OF THE SECRETARY OF WAR:
G. C. MARSHALL,Chief of Staff.
OFFICIAL:
J. A. ULlO,Major General,
The Adjutant General.
DISTRIBUTIO~ :
AAF (5); AGF (5); ASF (5); AAF C (2); Arm & Sv Bd (2); Def C (2);TofOpns (5); Base C (5); Tech Sv (2); SvC (5); Area ASvC (2); PC&S (2);PE (2); Dep 11 (2); Gen Oversea 50S Dep (Sig Sec) (2); GH (2); MConcC (2); Air Base Hosp (2); Gen Sv Sch (5); Sp Sv Sch (10); USMA(2); ROTC (5); Lab 11 (2); Aig AS (2); Rep Sh 11 (2); A (5); Dept (5);D (2); Bn 2 (2); T /0 & E 2-22 (3); 2-26 (3); 2-27 (3); 7-25; 7-26 (3);7-29 (3); 11-107 (3); 11-127 (3); 11-237 (3); 11-587 (3); 11-592 (3);11-597 (3); 17-15; 17-16 (3); 17-17 (3); 17-19 (3); 17-25; 17-26 (3);17-27 (3); 17-29 (3).
5. Disposal-Bury in slit trenches, fox holes, other holes. Throw instreams. Scatter.
USE ANYTHING IMMEDIATELY , AVAILABLE FOR
DESTRUCTION OF THIS EQUIPMENT
WHAT-l. Smash-All vacuum tubes, crystals, control dials, coupling coils,transformers, speakers in the receivers, external loudspeakers,
microphones, headsets, dynamotors, and cable connectors.
2. Cut-All connecting wires, cording, and cabling.
3. Burn-All equipment, and all associated training, technical, andinstallation manuals.
4. Bury or scatter-All remains, after destroying their usefulness.
DESTROY EVERYTHING
lY
c
..
SAFETY NOTICE
THIS EQUIPMENT USES HIGH VOLTAGES WHICH ARE DAN-GEROUS TO LIFE. OBSERVE ALL SAFETY PRECAUTIONS.
1. MAKE NO ADJUSTMENT WITH THE POWER SWITCH ON.
2. DO NOT OPERATE THE .EQUIPMENT WITH THE SHIELDSREMOVED.
3. DO NOT CONNECT POWER TO ANY UNIT OF THE RADIOSET UNTIL OPERATING INSTRUCTIONS HAVE BEENREAD COMPLETELY.
v
.
\.,
RESTRICTED
SECTION I
" GUIDE TO USE OF THIS MANUAL
"
1. Purpose ~
This manual provides methods and procedures,based upon actual field experience, for installationof radio and interphone equipment in Light TankM5 series. Items required to make a complete op-erating installation are listed for each radio set andinterphone equipment. Offcial nomenclature fol-lmn:d by empty parentheses, such as HeadsetHS-3O-( ), is used to indicate any model ofequipment regardless of its procurement.
2. Equipment
Installations coyered include the following radiosets:
SCR-245-liSCR-508-( )AN /VRC-3-( )
SCR-506-( ),SCR-528-( )
3. Holes and Brackets
The preliminary preparation of Light Tank M5for installation of radio and interphone equipmentconsists of the necessary drillng of the vehicle, thelocation and spacing of certain holes and bolts, andthe mounting of the terminal box complete withbattery and interphone connections. Normally,
these preparations wil have ben completed be-fore deliyery of the vehicle. Should any vehicle
arriye undrilled, reference must be made to the
appropriate figure for complete drillng data. In
the event relocation of holes appears to be neces-
sary, consult these figures before driling. Do not
change kole line-up on any radio part imless abso-
lutely necessary. Specific instructions for any par-
ticular part of these installations are included in
the section devoted to that installation. Figures 3and 12 show the mounting holes used for the vari-ous radio sets installed in Light Tank M5.
4. Before Beginning Installation .
Ilustrations, installation methods, and any sub-sequent changes to this manual must be studiedcarefully before an installation is made.
Caution: Light Tank M5 series has a 12-voltelectrical system. Before installng any radio set orinterphone equipment covered in this manual, besure that it is designed for a 12-volt installation,and that 12-volt dynamotors have been supplied.
S. Immediately After Installation
At the completion of the installation, a thoroughoperating check must be made to determine \V hetherthe equipment has been installed properly andwhether it is in working order.
CautiOti: Do not operate any of the radio orinterphone equipment until the instruction bookor technical manual, covering the specific radio setor interphone equipment, has been studied care-ful\y. Otherwise, damage to the equipment mayresult.
SECTION IL
IGNITION NOISE SUPPRESSION IN LIGHT TANK MS SERIES
6. General
An electncal noise suppression system has beeninstalled in Light Tank MS senes by the manu-facturer. The type of suppression installed in thissenes is usually called the filter suppre5r, bypascapacitor, and shielding system. For a detaileddescnption of this suppression system. se thetechnical manual.furnished by the manufacturerfor each vehicle. Normally, little trouble is expen-enced with this system. However, should a case
anse where excessive ignition or other electncalnoise is encountered, locate the source of the noiseand take steps toward eliminating it. Use thefollowing procedure.
7. Procedure
a. Complete the radio installation and studythe detailed operating instructions contained in
the technica manual of the radio set. Place theradio set in operation, set the receiver sensitivitycontrol at maxmum, and tune the receiver slowlyover the entire range of frequencies to be utilizedfor communication. Listen to the reeiver output
with a headset.
b. When the frequency or frequencies of great-est noise level have been found, leave the receivertuned to one of these frequencies and shut off thevehicle engine. Observe to what degree the noisehas subsided. That part of the noise which subsideswhen the vehicle engine is shut off, is caused bythe engine's ignition system. That part of the noisewhich stil persists is picked up from sources otherthan the vehicle's ignition system.
c. Start the vehicle engine again. Adjust receiver sensitivity control to a point where the en-gine noise can be most readily distinguished fromthe static, etc. Proceed to identify the engine
ates when engine is raced;stops when engine isturned off.
2
Intermittent,' clicking Generator regulator.
sound; lingers for severalseconds when ignition isturned off.
Whining sound; vanes with Generator.speed of engine; ceases
only when generator stopsrotating. .
Sparking, or con tin uous Brushes and commu-
crackling noise. tator of generator.
d., Noises from other electncal components andcircuits of the vehicle, such as panel gauges, heaterfans; and, in turreted vehicles, traversing motorsand gyrostabilzers, wil generally fall into one ormore of the above categones. To identify noisesemanating from them, these auxilanes may beturned on and off individually.
e. If the source of interference cannot be foundby any of the preceding methods, connect a probeantenna (fig. 31) to the antenna terminal of theradio set. Slowly move the loop of the probe an-tenna over the vanous parts of the vehicle's elec-tncal system. Keep the loop close to, but not in ,contact with, the part being examined. Interfer-
ence-producing parts should be heard in the
reeiver.
f. Intèrference generally can be eliminated bycleaning, tightening, or rep'lacing noise-producing
parts. Examine and tighten all suppressr andshielding components, and all connections andgrounding bonds. Clean the surfaces under them.This wil assure goo electncal con tact between
wires and terminals, and between metal casings
and the frame of the vehicles. (Insulated but un-grounded metal parts absorb and reradiate elec-tnca noise.) .,
g. If interference persists, supprer compon-ents should be checked by substituting new ones.
If a replacemtnt is not available, disconnect the
suspected component, and test capacitors, resis-tors, and chokes within it for opens, shorts, or otherfaults.
SECTION IIl
RADIO SET SCR~245-U
8. Required Parts
Items necessary for installation of Radio Set SCR-245-U in Light Tank M5 series are listed below:
Box BX-19, for receiver spare tubes.Box BX-20, for transmitter spare tube.Box BX-21, for Boxes BX-19, BX-20, headsets, etc.Cas CS-S6, for trasmitter tuning unit.Chest set TD-4.Clamps MC-421 to MC-424 inclusive, for mat setions.Cord CD-307-A 6S-inch, for Headset H5-3O-( ).Cord CD-318 for Microphone T-3O-( ).
Cord CD-26 connects Radio Transmitter BC-223-( ) to Dynamòtor Unit PE-S5.Cord CD-355, connects Radio Reciver BC-312-( ) to Radio Transmitter BC-223-( ).
Cord Co-I88-A, plnnecs Dynotor Unit PE-55 to terminal box.Cord CD-, 6-inch, for Headset H5-3O-( ).Cover B~7, for mast bas.Cove BG-7S, for Radio Recver BC-312-( ).
Cover BG-77, for Dynotor Unit PE-55.Cove BG-6, for Radio Transmitter BC-223-( ).Cryta Holder FT-171-( ), with crstal.Dymotor Unit PE-SS, includes Mounting FT-18S.Hardware bag.Headset H-16/U or H5-3O-( ),
Insulator IN-98. for antenna lead-in Wire W-12S.Key 1-4S.Mast Bas MP-37.Mast Seion MS-9.Mast Seion M5-50.Mast Seion M5-S 1.
Mast Seion M5-52.Mast Seion M5-S3.Micrphone T-4S or T-3O-( ).
Mounting FT-172, snubber for Radio Transmitter BC-223-( ).
Mounting FT-178, snubber for Radio Reciver BC-312-( ).
Radio Reciver BC-312-( ). includes Mounting FT-162.Radio Transmitter BC-223-( ), includes calibration chart and Mounting FT-I73.Roll BG-S6-A, for mat seions,Transmitter Tuning Unit TU-17-( ).
Transmitter Tuning Unit TU-I8-( ),
Wire W-128.
'Cryii Holder FT-l71. FT-171-A. or FT-I71-B may be uo.'Hea HS23 may be -ibsttute for Heat H-16/U or HS-3G( ). (Cord CD- is not required.)"Mut Hu MP-ll. MP-ll-A. or MP-S7 may be substute for Ma Hu MP-37.'The ae numbers and order Dumbe of th cabroD ch an of Tratte T~nii Units TU-17-( ) and TU-l8-( ). mus aire with thos
of :R Tratte. BC-223 ).
3
",
9. Assembly and Installaton
a. LOCATION AND ASSEMBLY OF COMPONENTS. CompOnents of the radio set (fig. 6) should be installedas follows (figs. 3 and 19'for bracket details): ' ,
), on Mount- Place receiver on Mounting FT-162, tighten thumbscrews,and lock in place with the snap-slide catches.
Remove the tuning unit from the transmitter. While usingthe small reinforcing plate as a template, drill side of trans-mitter cabinet. Install Mounting FT -172 as shown infigures 5 and 6: Replace the tuning unit.
Cut a slot in top of cover to admit item 1 (fig. 5), and placeover transmitter cabinet before completing the assemblyof Mounting IT-l72, as shown in figure 6.
Place the transmitter on Mounting FT -113 and lock in pOsi-tion with snap-slide fasteners.
To be earned in side poket of transmitter or mounted inSome convement loction by drillng small holes in comersand securing with machine screws.
Part and loca#01
Mast Base MP-31, in hole provided inroof of right spOnsen (figs 1 and 6).
Insulator IN-98.
Mounting FT-162, on floor of rightsponsen, left side.
Mounting FT-173, on floor of rightsponson, center.
Mounting FT-18S, on floor of rightspOnson, right side.
Mounting FT-118.
Cover BG-1S.
Radio Receiver BC-312-(ing FT-162.
Mounting FT-l72.
Cover BG-86.
Radio Trasmitter BC-223-( ), onMounting FT-173.
Calibration chart.
Dynamotor Unit PE-SS, on MountingFT-18S (fig. 6).
4
lIe/hod a ru materals
Install mast base through hole in roof of right spOnsen byassembling the necesary washers and insulator setionsas follows: Place item lover hole in sponsen. Place item 2over item 1. Place item 3 over item 2. Insert item 4through hole. Place item 5 over item 6 and insert throughbottom of hole in sponsen. Place items 7 and 8 beneathitem 6 and fasten entire assembly in place with items 9 and10. See figure 6 for termination of antenna lead beforecutting wire.
Fasten to pads shown in figure 3, with screws and washersprovided.
Seure to sponsen with screws and stopnuts provided. (Seefig. 6.)
Secure to sponson with screws and stopnuts provided. (See
fig 6.)
Secure to sponson with screws and stopnuts provided. (See
fig. 6.)
Remove receiver from receiver cabinet and drill cabinet asshown in figure 4. Install Mounting FT-118 as shown infigure 5. (See also fig. 6.)
Replace the reeiver in its cabinet. Cut a slot in top of coverto admit item 1 (fig. 5), and place over receiver cabinet.before completing asembly of Mounting FT -178, asshown in figure 6.
Place dynamotor on mounting and lock II position withsnap-slide fasteners.
Part snd Jlfation
Cover BG-77.
Transmitter Tuning Units TU-17-( ), and TU-18-( ).
Case C~56,
Mast Sections MS-49 to M5-53 andClamps MC-421 to MC-424 on MastBase MP-37.
Roll BG-56-A.
Cover Bc-7.
Box BX-19 and Box BX-20.
Box BX-21.
Headset H5-30-( ).
Method and mateias
Place cover over Dynamotor Unit PE-5S.
One tuning ~nit carried in transmitter. Unit net in use tobe carried in Case C5-56.
Disposition left to discretion of using arms.
Screw mast sections together and fasten with clamps. Carrin Roll BG-56-A, when not in use.
For mast setions and clamps when not in use. Dispositionleft to discretion of using arms.'
Place cover over mast base when mast sections are not inuse. (See fig. 6,)
Disposition left to discretion of using arms. Stow in BoxBX-21, when not in use, if Box BX-21 is carred in thevehicle. .
Disposition left to discretion of using arms.
Plug Cord CD-307 into jack of Radio Receiver BC-312-( )Plug Cord CD-604 into Cord CD-307 and connect Head-set HS-30-( ) to Cord CD-604.
Plug the cords attached to Microphone T -30-( ) and Key1-45 to the proper jacks in Radio Receiver BC-312-( ).
Crystal HolderFT-171-( ),withcrystal. Carred in Transmitter Tuning Unit TU-17-( ) or TU18-( ), according to frequency designated on Bolder.
Microphone T -30-( ) and Key 1-45.
Wire W-128, and screws, nuts, etc.
Headset H-16/U, Microphone T-45,
and Chest Set TD-4.
Stow any excess material remaining in Box BX-21 aftercompletion of installation.
Use in place of Headset H5-30-( ), Microphone T-30-( ).and associated cording, when available.
b. COROI:'G A:-Ð WIRING. (1) CorEl and wireRadio Set SCR-245-U as shòwn in figure 6. Handtighten the plug locks on the various cords. Do not
use any tool to tighten these plug locks. Suffcientslack should be left in the cording and wiring con-'nections to permit free motion of all units havingshock mountings. Follow tke color coding specified.
(2) Do not connect the + 12-volt and -12-volt leads of Cord Co-188-A, connecting Dyna-motor Unit PE-55 and the battery terminal block(in the terminal box), until all other connections
have been completed. This procedure wil prevent
accidental shorts of the battery. When installng,Cord CO-188-A at the dynamotor end, it may benecessary to ream the entrance hole provided in
the dynamotor housing. If necessary, it is permis-sible to modify the dynamotor end of this cord byremoving excess length of leads. The terminalsmust be resoldered to the leads before coml'letingthe electrical connections.
(3) Make the antenna and ground connections,using Wire W-128 as shown in figure 6. The groundconnections from the transmitter and the receivershould be as short as possible. Exercise care toinsure good electrical connections. All wires shouldbe solder-tinned.
(4) Connect and drape all cords so that theywil not interfere with the accessibility and opera-tion of the radio equipment. Clamps to hold radiocordage are shown in figure 25.
5
'~_."O_"."__-_e:."":'-;.':.:'-t.~.-
SECTION IV
RADIO SET SCR-S06-( )
10. Required Parts
Items necessary for installation of Radio Set SCR-506-( ) in Light Tank M5 series are listed below:
Bracket, for Antenna A-27, phantom.Chest CH-263.Chest Set TD-.Clamps MC-421 to MC-424, inclusive.Connector No. 61007 and Bondnut BL-50,Cord CD-307-A, 65~inch, for Headse HS-3O-( ).Cord CD-04, 6-inch, for Headset HS-3O-( ).Cord CD-314, for loudspeker L5-3,Cord CD-318, for Microphone T-3O-( ).
Cover B~7. for Mast Base MP-37.Dynamotor DM-4( ), 12 volts.Dynamotor 011-42-( ), 12 volts.Headset H-16/U or HS-3O-( ).
Hardware bag.Insulator IN-98.Key J-45.Loudspeke LS3.Mast Bas MP-37 or MP-57.Mast Setion 115-9.
Mast Setion MS-50.Mast Seion 115-51.
Mast Seion 115-52.
Mast Setion 115-53.
Microphone T-45 or T-11.
Microphone T-3o- ).Microphone Cover 11-367, for Microphone T-45.Mounting FT-253, including Cord Co-280.Radio Reciver BC-652-( ), includes crstal unit. set of tube, and spare parts.Radio Transmitter BC-653- ), includes set of tube and spare parts.Roll BG-56-A, for mast seions.Switch Box BC-658-( ). " 'Wire W-I46, for antenna and grund leads.
'Hea HS-18 ma be substitute for Headset HS-30( ). (Cord CD- is not require.) H.,cb H-Ió/U shul be ua wh avale'Mas Ba MP-S7 or MP-Il ma be subatitute for Mas Ba MP-37.'Micphne T-17 ma be subotute for Mlcphii T-JO. (Cord C~311l is DO reui) Miphii T-& shul be ua wb aYB
6
11. Assembly and Installation
a. LoATION AND ASSEMBLY OF COMPONENTS. Components of the radio set (figs. 10 and 11) shouldbe installed as follows (figs. 3 and 19 for bracket details);
Part and location
Mast B~se MP-37 or MP-57 (fig. 1), inhole provided in roof of right sponson.
"
Insulator IN-98, on mounting pads, ceil-ing of right sponson.
Dynamotor DM-4o-( ), in crystal fre-quency control unit of Radio ReceiverBC-652-( ).
Dynamotor DM-42-( ), in RadioTransmitter BC-653-( ).
Mounting FT -253-( ), in right sponson.
Radio Transmitter BC-653-( ), onMounting FT-253-( ).
Method and mateias
Install mast base th~ough hole in roof of sponson by insert-ing the necessary washers and insulator setions as fol-lows: Place item lover hole in sponson. Place item 2 over
item 1. Place item 3 over item 2. Insert item 4 throughhole. Place item 5 over item 6 and insert through holefrom inside the sponson. Place items 7 and 8 beneathitem 6, and fasten entire assembly in place with items 9and 10. See figure 10 for termination of antenna leadbefore cutting wire.
Fasten to pads with screws and washers provided, as shownin figure 10.
If the dynamotor is furnished uninstalled, install it in thecrystal frequency control unit. The four snap fasteners
accessible from the top of the crystal frequency control
unit are used to hold the dynamotor in place. All connec-tions to the dynamotor are made by Bexible leads term-inating in Plug P-250. Installation of proper dynamotorautomatically adjusts the receiver circuits for correct op-erating voltage. The nameplate on the front panel of thereceiver should be turned to read 12-VOLTS OPERA-TION.
If the dynamotor is not already installed, install it in RadioTransmitter BC-653-( ) by plugging into provided jacksand clamping in place. Before placing the radio set in op-eration, see that links on the right side of the transmitterare in proper places for 12-volt operation. If they are not,
remove the top of Radio Transmitter BC-653-( ), andconnect the six links in the 12-volt position as indicatedby the arrow on edge of terminal strip. The outer side ofthe voltage indicator plate, above the dynamotor's redpilot light, should read 12 VOLTS.
Fasten to Boor of sponson with hardware provided. To avoidnoisy reception while the vehicle is in motion, the feet ofMounting FT -253-( ) must make good electrical con-tact with the vehicle. The surface upon which thefeet of
the mounting rest, must be cleaned thoroughly with
emery cloth or sandpaper before the mounting is bolted inplace. Where the radio mounting shelf is not welded tothe vehicle, the surfaces under the heads of all mountingbolts must be cleaned' to insure good electrical contactbetween mounting shelf and vehicle frame.
Place on Mounting FT-253 (fig. 10), and secure in place bytightening provided wingnuts.
7
Part and ~Radio Receiver BC-652-( ), on Mount-
ing FT-253-( ).
Switch, Box BC-658-( ), on bracket,extreme front of right sponson. (See
fig. 10.)
Headset H5-3Q-( ) and Microphone
T-3Q-( ), orT-17, and Key 1-45.
Mast Sections MS-9 to M5-53 inclu-sive, Clamps MC-421 to MC-424inclusive, on Mast Base MP-37.
Cover BG-67.
Roll BG-56-A.
Loudspeaker L5-3 and Cord CD-314.
Headset H-16/U, Microphone T-45,
and Chest Set TD-4.
Antenna A-27, phantom.
Chest CH-263.
Metho and ma
Place on Mounting FT-253 (fig. 10), and seure in place bytightening pro~ded wingnuts.
Fasten to bracket with screws ánd washers provided. Con-
nect the attached cords as shown in figure 1 i.
Plug into properly designated cords and jacks, as shown infigure i 1.
Place clamps over mast section joints to prevent loss oftipper sections. When not in use, carr mast sections.andclamps in Roll BG-56-A.
Place over mast base when mast sections are removed.
Disposition left to discretion of using arms.
If use of these items is desired, connect them together andplug into properly designated jack on front panel of
Radio Receiver BC-652-( ).
Use in place of Headset H5-30-( ), Microphone T-3Q-( )or T -17, and associated cording, when available.
Locate and weld bracket (fig. 32) securely to front edge oftransmission housing, as shown in figure 33.
Store in any convenient location.
b. CORDING AND WIRING. Cord and wire Radio Set SCR-506-( ) as shown in figure 11. Leave suff-cient slack in all cording and wiring to permit free motion of all units having shock mountings. Do notconnect the positive and negative 12-volt leads in the terminal'box until all other connections have beenmade, thus preventing accidental short-circuiting of the car storage battery.
8
SECTION V
RADIO SET SCR-508-( ) OR SCR-528-( )
1 ~ Require Parts
Items necessary for installation of Radio Set SCR-508~( ) or SCR-528-( ) in Light Tank M5 seriesare listed below:,
-,
Quantit~. Stock. I
Radio Set Radio Set Xumber ItemSCR-508-( ) SCR-528-( )
1 1 2A262 Antenna A~2, phantom,1 1 2Z1250.56 Bracket for Antenna A~2.1 1 4B417-4 Chest Set TD-4.1 1 2Z2599264 Chest CH-264.1 1 2Z2651-423 Clamps MC-423 and MC-424, for mast seions,1 1 3E1307 A-5.5 Cord CD-307-A, 65-inch, for headset.
11 11 3E1604 Cord CD~04, 6-inch, for connecting Headset H5-3O-( ) to Cord CD-307-A.
1 1 6Z3147 Connector No. 61007 and Bondnut BL-50, for power cable connection,1 1 22300 108 Cover BG-I08, for Mast Base MP-48.
2B830i in, 8 in, 6Z6017-7 Hose, rubbe, garden, % inch 1.0.1 1 3G61 Insulator IN-iot1 1 2A2088-8 Mast Base MP-48 or MP-4A.1 1 2.\2351 Mast Setion M5-S i.1 1 2.\2352 Mast Setion M5-52,1 1 2.-2353 Mast Setion M5-53.1 1 2A2416 Mast Setion M5-116,
,
21 21 2Bl645 Microphone T-45 or T-17,2B1617
1 1 2B lS67 Microphone Cover M-367.1 1 2Z6711-237 Mounting FT-237-( ), including Cord C0-278 to power terminal box, and
necesry mounting bolts, locknuts, etc.2 1 2C4403 Radio Receiver BC~03-( ), including one set of tube installed.1 1 2C6494 Radio Transmitter BC-604( ), including one set of tubes and necessary
crstals instaled.-
1 1 2Z80561\ Roll BG-56-A, for antenna mast setions.7 feet 7 feet IB128 Wire W-128; 2 feet required for Antenna A~2,
IHeadit HS-18 may repla Heat H-16lU or HS-3G-( ), When this is done. Cord CD- is not us.
'Microphone T-io( ) may repla Micophone T-45 or T-17. When this Íl done. Cord CD-318. ÓJtrol cord for MicrophoneT-3G-( ). must besupplied, ."Dynaotor DM-34( ) and Dyotor DM-35-( ) may alredy be instaed in Rao Reve BC~( land Rao Tratte BC~( ),respevely.
9
13. Assembly and Installaton
a. LOCATION AND ASSEMBLY OF COMPONENTS. Components of Radio Set SCR-508-( ) or SCR-528-( ) (figs. 2, 7, and 9) should be installed in Light Tank;M5 as follows (figs. 3 and 19 for bracketfu~~: .
Part and loum
Mounting FT -237-( ), including CordC0-278, in left sponson.
Mast Base MP-48 or MP-48-A, in holèprovided in roof of left sponson.
Dynamotor DM-34-( ), in cabinet ofRadio Receiver BC-603-( ). (TwoDynamotors DM-34-( ) and twoRadio Receivers BC-603-( ) re-quired for Radio Set SCR-508-( ).)
Dynamotor DM-35-( ), in cabinet ofRadio Transmitter BC-604-( ).
Radio Transmitter BC-604-( ), in-cluding necessary crystals, on Mount-ing FT-237-( ).
Radio Receiver BC-60J-( ),onMount-ing FT-237-( ). (Two Radio Re-ceivers BC-603-( ) required forRadio Set SCR-508-( ).)
10
Metho and ma
Fasten to floor of sponson with 8 mounting screws ~"-24 x 1%", nuts, and washers provided. (See fig. 2.)
Install mast base through hole in roof of left sponson in thefollowing sequence as shown in figure 8: Place item 1
through hole in sponson. Place item '2 over item 1 urider-neath (inside sponson) and tighten' in place with item 3.Place item 4 over item 1 and tighten firmly with item 5.Mast Base MP-48 is designed so that three modes oflead-in connections are possible: coa:.¡ial cord; WireW-128, internal; Wire W-128, external. Wire W-128, in-ternal, must be used in this installation as follows: Cutantenna lead-in Wire W-128 to proper .length and strip72-inch of the insulation from one end; clean and tin thisend and solder tip, item 6B, to it as shown in figure 8.Loosen setscrews 8 and 9. Remove assembly 7 and installthe wire inside the mast base, through hollow stem, itemI, making certain that metallc tip, item 6B, is inserted inthe slot as far as possible. Tighten setscrews 8 and 9.This step should be made before mast base is installedthrough hole in coof of sponson. After mast base is in-stalled and tightened, insulator 6C, neoprene washer 6D,
'and insulator 6E are slipped over Wire W-128 and in-stalled inside hollow stem, item 1. Follow up with washer,item 17, and retaining collar, item 18. Suffcient slack wiremust be provided inside stem, item 1, to allow for flexingof mast base. For Mast Base MP-48-A, see figure 20.
In cae Dynamotor DM-34-( ) is not already installed inreceiver, install it as follows: Remove chassis from receivercabinet by loosening screw lock in rear center of cabinet.Dynamotor unit is installed on top rear of receiver chassisby means of four bolts in- its base.
If dynamotor is not already installed in the transmitter, in-stall it as follows: Remove crystal case from transmittercabinet by loosening the two screw locks on front paneland pullng crystal case out. Loosen the four screw locksholding cover on, top of transmitter and remove cover.Dynamotor unit, is installed in left rear of transmitterchassis by means uf rour bolts in its base.
Mount in position as shown in figure 2 by means of thumb-screw locking devices.
Mount in position as shown in figure 2 by means of thumb-screw locking devices.
Part and loatio
Cover BG-108.
Headset H5-3O-( ).
Microphone T-17 or T-3Q-( ).
Mast Setions M5-S1, M5-52, and M5-53; Clamps MC-423 and MC-424.
Roll BG-56-A. .
Headset H-16/U, MiGrophone T-45.
and Chest Set TD-.
Antenna A-62, phantom, and bracket.
'\Tire W-128, for Antenna A-62, phantom.
Metho and mateias
Place over Mast Base MP-48 when equipment is not in use.
Use Cords CD-604 and CD-307-A to connect headset tojack in Radio Receiver BC-603-( ).
Insert plug of cord in microphone jack of Radio Transmit-ter BC-604-( ).
Screw mast sections together and, after placing clamps overjoints, screw into mast base. When removed, stow mast
, setions in Roll BG-56-A.
Disposition left to the discretion of using arms.
Use in place of Headset H5-3Q-( ), Microphone T -30-(or T-17, and associated cording, when available.
Se position 3, figure 34. Attach phantom antenna to bracketas shown. Remove two screws and lockwashers from leftfront comer of Mounting FT -237-( ), ~nd secure bracketwith antenna attached to mounting with original Jock-washers and hardware provided with bracket.
Disconnect standard antenna lead-in from antenna bindingpost on transmitter and connect one end of 2-foot lengthof Wire W-128 to this binding post. Remove cover fromantenna and connect other end of wire to antenna bindingpost marked ANT. Fasten ground clamp securely to tipof bracket. .
When used with Radio Set SCR-508-( ), store in any con-venient location. When used with Radio Set SCR-528-( ), install on Mounting FT -237-( ) in vacant spacebetween Radio Transmitter BC-604-( ) and Radio Re-ceiver BC-603-( ).
Not/!. The above procure applies to the installation of Radio Set SCR-508-( ) or SCR-328-( ) in left s~nson of LightTank MS. For loction of Radio Set SCR-508-( ) or SCR-528-( ) in turret of Light Tank 1\5Al, se figures 14,15, 16, and17. :\ssmbly of components is similar to above procedure. ,
Chest CH-264.
Rubber hose, to prevent damage to MastSection M5-53, caused by mast sec-tion striking edge of hatch door ofLight Tank M5A1.
Loosen two- setscrews on Clamp MC-424 at joint of MastSections M5-53 and MS-S2. Remove clamp. Unscrewtwo mast sections. Pass 8-inch length of hose over anddown on Mast Section M5-53 to a position just aboveMast Base MP-48 and where mast section is protectedby hose when mast sways and strikes open hatch door.
.b. CORDING AND WIRING. Cord and wire this radio set as shown in figure 7 (fig. 15 for Light TankM5A1). Suffcient slack should be left in all cording and wiring at Mounting FT-237-( ) to permitfre motion of the shock mountings. Install Cord CQ-278 connecting Mounting FT-237-( ) and thebattery terminal strip in the car terminal box after all other connections have been completed. This
procedure wil prevent accidental shorts of the battery.
i I
SECTION VI
RADIO SET AN/VR~~-( )
14. Required Parts
Items necessary for installation of Radio Set ANjVRC-3-( ) in Light Tank MS series are listed below.
Bracket. (Se fig. 19(C).)Bracket. (Se fig. 19(A).)Bracket. (Se fig. 19(B).)Cas CS-128-( ).Radio Receiver and Transmitter BC-l00A.Transformer C-410, to be attached to Switchbox BC~58-( ).Cover BG-108, for Mast Bas MP-48-A.Hardwae.Handset TS-1S-( ), with Cord CD-94.Mast Bas MP-48-Aor MP-4.Mast Setion MS-53, includes one spare.Mounting FT-25O-( ).Strap ST -SO.
Switch Box BC~58-( ).
TM 1l~37, for Radio Set ANjVRC-J-( ).Wire W-128.
.Transformer C-410 may be obtained from Cord CD- or CO-. if it is not available sepately.
15. Assembly and Installation
Components of Radio Set ANjVRC-.l-(details) :
Part and location
Ammunition rack and periscope box, onright sponson.
Mounting FT-2So-( ), and bracketsshown in figures 19A and 19C.
12
should be installed as follows (figs. 3 and 19 for bracket,
."lethod and mate
Remove the .30 caliber ammunition rack from right sponsonto provide room for the radio set. Remove periscope boxon sponson to provide access to all mounting locations.Replace periscope box when installation has been com-pleted.
Seure brackets (fig. 19(C) ) to Mounting FT-2So-( ) withtwo hex. head machine screws, nuts, and lockwashers, asshown in figure 18. Secure brackets (fig. 19(A) ) to bottomof Mounting FT-2So-( ), using 4 hex. head machinescrews, ~'-20 x ~' with hex. nuts and lockwashers.'
Insert. two hex~iieacl machine screws upward throughholes in Mounting FT-2So-( ), and secure with nutsand washers as shown in detail A, figure 18. Place Mount-ing FT -2So-( ) in position on right sponson; in place ofthe .30 caliber ammtinition rack, and secure to sponsonby means of screws and nuts removed from ammunitionrack, placing the screws upward through the sponson, asshown in detail C, figure 18.,
Part and loatio
Radio Receiver and Transmitter
BC-l000-A and Battery BA-70.
Switchbox BC-658-( ) (figs. 21 and24) and Trasformer C-410.
Metho and maJ
Install' Battery BA-70 in Cas CS-128-( ) of Radio Re-ceiver and Transmitter BC-l000-A. Place Radio Re-
ceiver and Transmitter BC-I00~A on Mounting FT-250-( ) and secure to brackets (fig. 19(e) ) with twohex. head machine,screws, ~ir-20 x ~ir, nuts, and lock-washers, as shown in figure 18. Place bracket (fig. 19(B) )over receiver-transmitter, and secure to MountingFT -250-( ) as shown in detail A, figure 18.
Before Switch Box BC-658-( ) is installed in the vehicle,Transformer C-410, part of Cord C0-04, must be in-serted in series with the headset patch cord on theRADIO side of the box. If a separate TransformerC-410 is not available, a complete Cord CD-604 may beused by reversing connections to Transformer C-410.Terminals 1 and 2, on Transformer C-410, marked" head-set," wil be used for connection to the radio set, and
terminals 3 and 4, marked" cord," wil be used to ,connect
the cord from Switchhox BC-658-( . ). Open the case ofTransformer C-410 (detail D, fig. 18) by removing thefour brass screws in the flat side of case. Disconnect the6-inch cord from terminals 3 and 4 (cord terminals) ofthe transformer. Place the 6-inch cord on oppoite end oftransformer, and connect terminal lugs of cord to termi-nals 1 and 2. Remove Plug PL-540 from the end of CordC0-604. Remove the Plug PL-55 from headset patchcord on the RADIO side of Switch Box BC-658-( ).Place Plug PL-55 on end of Cord C0-04, in place ofPlug PL-540. Solder Terminal TM-163 to ends of head-set patch cord on Switch Box BC-658-( ) and connectTermi~al TM-163 to terminals 3 and 4 on TransformerC-410. Replace cover and screws on cas of TransformerC-410. If Transformer C-410 is supplied separately, cutheadset patch cord from Switch Box BC-658-( ), pre-pare tips of cordage, solder Terminal TM-163 to tips, andconnect as shown in figure 18. Mount Switch Box BC-658-( ) on bracket (fig. 26) beside the codriver's Inter-phone Control Box BC-606-( ), with provided hardware.Figure 18 shows the location of switch box on two types ofmounting brackets supplied in Light Tanks M5 series.Route the patch cords on the RADIO side of switch boxto Radio Receiver and Transmitter BC-l000-A, as shownin figure 18. Insert Plug PL-68 into microphone jack onpanel and Plug PL-55, on Cord CD-604, into phone No.1jack.
13
Part and locit
Mast Base MP-48-A or MP-48, on topplate of right sponson.
-',
Mast Section MS-53.
Antenna AN-130, Handset TS-1S-( ),
and Strap ST -so.
14
MetW and mt
Se figure 20 for assembly of Mast Bas MP-48-A. In thisinstallation an internal lead-in, Wire W-128, is used.Cut a 75-inch length of Wire W-128, clean and solder-tinM-inch of each end, and solder plug, item 11, on end ofwire. Insert end of lead-in, with the soldering plug, item11, upward through the mast base and secure item 11
with screw, item 9, at top of mast base. Place washers,
items 5 and 6, and collar, item 7, over Wire W-128, asshown in figure 20, and screw item 7 into bottom of mastbase. Solder a terminal lug, as shown in figure 30, to theother end of Wire W-128. Secure terminal lug to antennaterminal by means of a hex. head machine screw, %.-24 x 72., as shown in figure 18. See figure 8 for assemblyof Mast Base MP-48. Cut a 14-inch length of Wire\V-128 for use as a ground wire and connect it as shown indetail C, figure 18.
Screw into Mast Base MP-48 or MP-48-A.
These items are for' portable operation of Radio Set ANIVRC-3-( ). Stow these items, and the technical man-uals, in a convenient place in the vehicle.
SECTION VII
INTER PHONE EQUIPMENT ASSOCIATED WITH RADIO SET SCR-508-( ) OR
SCR-S28-r~ )
16. Require Parts
~tems necessary for installation of interphone equipment in Light Tank M5 series are listed below.
Qutity Stock Number
4: 48417-41 6Z31474 2C17384 3E1307-5.S
14 3E131814 3E160426 feet 3E2213
1
14 2B800162B830
14 2BI6452-B 1630
, (tern
Chest Set TD-.Connector No. 61007 and Bondnut BL-50.Interphone Control Box BC-606( ). includingscews. clamps, etc.Cord CD-307-A, 65-inch, for headset,Cord CD-318, for Microphone T-30-( ),
Cord CD-604, 6-inch, for connecing Headist H5-3O-( ) to Cord CD-307-A.Cord CD-213, interphone cable. 'Adapter bracket, (Se fig. 27(B),)Headset H-16/U or H5-30-( ).
Micrphone T -45 or T -30-( ),
'Heaset H5-18 may be substituted for Headset H5-3Q-( ). Wben thi is done, Cord CD- i. not used,
"In an emergency, Micrphone T-17 may be substituted for Microphone T-3Q( ) """ n tb' . d r d CD- .. no lie is is one. '\ or .US 1:1 not use.
17. Assembly and Installation
a. LIGHT TANK M5. (1) Interphone control boxesfor driver and codriver. The interphone equipmentsupplied for Radio Set SCR-508-( ) or SCR-528-( ) is not completely wired for installation.To interconnect Interphone 'Control Box BC-606-( ), as shown in figures 2, 7; and 9, cutCordage CQ-213 to lengths shown in figure 7. Atthe end of each length, strip back 4 inches of theouter rubber, 334 inches of outside shielding, and2M inches of the shielding around red and greenwires. Fold back each shielding about 34 inch aridwrap and solder several turns of No. 18 tinnedhook-up wire around each shielding, leaving a4-inch lead to be connected with the black wire ofthe cable for making ground connection. Insertthe prepared cable through the appropnate hole
in the interphone control box. Solder ends of wires
to numbered studs and fasten the cable,with clampin control box. Insert the prepared cable (connect-ing to radio set) through the appropnate cordagehole in Mounting FT-237-( ) and wire and clampto terminal board. Figure 23 shows the winng ofslip nngs and terminal boxes.
(2) Interphone control boxes for tank commanderand gunner. Prepare proper length of cording as
explained in (1) above. Remove the plug attachedto the bottom end of the %-inch flexible conduitunderneath the turret, and feed Cordage Co-213through the conduit. Solder the wires to the ap-pro~nate plug pins. (See fig. 9). Wire all shieldingto, pm E by means of the hook-up wire. Replacethe plug on the conduit and attach the plug to itssocket on the slip-ring assembly. Insert the upperen~ of the trepared cordage through the appro-
pnate hole m the tank commander's control box.Solder wires to appropnate numbered studs (Seefig. 9). Connect the shielding to stud No.8 withattached hook-up wire. Fasten cable with clampin control box. Prepare a short length of CordageCo-213 and connect the tank commander's con-
trol box in paraIlel with the gunner's control box,Insert the prepared cable connecting the radio setto the terminal box through the appropnate cord-age hole in Mounting FT-237-( ) and wire andclamp to the terminal board. Insert the other endof the cordage through the appropnate knock-outhole in the terminal box, using the provided con-nector and bondnut. See figure 9 for winng thecordage to the terminal block in the terminal box.
(3) Location and assembly of components- (figs. 2and 7). Install components of the interphone
equipment as follows:
15
Pii_~'Interphone Control Box BC-606-( )
(driver), on bracket, extreme left ofsponson.
Adapter bracket. (Se fig. 27(B).)
Interphone Control Box BC-606-( )(codriver), on bracket, extreme front,of right sponson.
~wo Interphone Control Boxes BC-606-( ) (tank commander), (gun-
ner), on bracket (fig. 27(B) ), rear ofturret ceilng. -
Headset H5-30-( ).
Microphone T -30-( ).
Cord CD-307-A.
Cord CD-318.
Cord CD-604.
Cordage Co-213, for interconnectinginterphone components.
Headset H-16lU, Microphone T-4S.and Chest Set TD-4.
.\let/iad aiid materi
Seure in place with machine screws and lockwashers pro-
vided. (Se fig~.2.)
Attach to exsting bracket on rear of turret ceiling withhardware provided.
Secure in place with machine screws and lockwashers pro-vided. (Se fig. 2.)
Secure in place with machine screws and lockwashers 'pro-
vided. (Se fig. 2.)
Use Cords CD-604 and CD-307-A, respectively, to connectheadsets to jacks of Interphone Control Boxes BC-606-( ).' '
To be strappe comfortably around throat above the larynx.Use Cord CD-318 to connect microphones to jacks ofInterphone Control Boxes BC-606-( ).
Extension cord for Headset H5-30-( ).
Control cord for Microphone T -30-( ).
Connects Headset H5-30-( ) to Cord CD-307-A.
After mounting and interconnecting control boxes, securecable along w.alls and hull of tank with clamps, screws,etc., provided with control boxes and listed in figure 2.
Use in place of Headset H5-30-( ), Microphone T -30-( ),'and associated cording, when available,
b. LIGHT TANK MSAL. For assembly and location of interphone equipment in Light Tank MSAl, sefigures 13, 14, 15, 16, and 17. The procure is similar to above procedure for Light Tank M5.
I.
-----¡__ _ __ --
..SID OIic-o-I14"-.
Figure I. Mast Bases MP-J7 and MP-57. assembly for instaion.
18
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:1 SCR-~2a-C ) OR III SCR-~3a-( ) .I '
MOÜ-NTI NG FT-237-( ~,II a-wla"-24II I ~a" SCREWSii a-Wla"-24 STOP NUTSII ~
.. II AST IIASE MP-4a OR IiP-4IAi __ iAPPLETON CONNECTOR - TRANŠMITTER-eIOO7~NO 80NONUT RECEIVER 8C-e03-( )IIL-~O CORDAGE CO-213
CLAMP"4a--a-32 II a/I"SCR£WS CONTROL BOX ii-eoe-C XCOMYANDER)a-'a-LOCKWASHERS a-'a-32 X 3/1" SCREWS
FT-172 AND F"T-178.2. FOR LOCATION OF MOUNTING HOLES.
BRACKETS, AND TERMINAL BOX. SEEFIGURE 3.
3. FOR MOUNTING HOLES AND LOCATIONIN SPONSON SEE FIGURE 12.
4. WIRE W-128 SHALL BE CUT TOPROPER LENGTH. ENOS SHALL BET~NED FOR ANTENNA AND GROUNDCONNECTIONS. '5. COVERBG-87 SHALL BE USED WHEN
MAST SECTIONS ARE NOT INSTAL,LED.
SCR-z4j-U in Light Tanks MS and MsAi.
RADIO RECEIVER .BC-312-( )MOUNTING F"T-llS2 .
COVER BG-75
MOUNTING FT-178
INSULATOR IN-f8
RADIO TRANSMITTER BC-223-( )MOUN'rING FT -.173
COVER BG - 88
MOUNTING FT-172INSULATOR IN -, 8DYNAMOTOR UNIT PE-!i5MOUNTING FT-185
COVER BG-77MAST SECTIONS MS-4f TOMS-53 INCLUSIVE. AND MASTBASE MP-37COVER BG-S7 (SEE NOTE !i)
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23 .
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I
i
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MAG MIC_MIC J3 J2I_PH i:NTRÒL ii BC--
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MAIC MIC PHMIC J3 J2II.TERI'NE CONTROL BOX BC--
(CO-DRIVER)
OITEl FOR WIRING OF SLIP RINGS ..D TERMINAL SDXES SEE FIGUR( Z3Z. Rl CODING DIAGRAM OF RADIO SET SCR-SOB-l ) SCR-S2!11 ) QlSCR-S3B-( i AND INTERPHNE EQUIPMENT SEE FiGuRE 7-
i. SHIELD OF CABLE a SHIELD OFTWISTED PAIR OF LEADS IN CASHA BE SECURELY GRDED AT EACH END. .
4. ENS OF ALL UNUSED CABL£ WiRE SHLL BE TAPD.5. DOTTED CIRCLE AROUND CA EN INDICATES SHIEI
'L'ii
Figure n. Wiring diagrAm of intrpho equipm for Radio Su
26
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( _.Æm-___
nu
PW WHICH ..LL fIT lllTOsoF: ON SLIP RING BO
MAETIC IIIC PHEIile JJ JZINTPHE COROL BOX Be__-( I
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Ille ..ic PHONEIile J3 JZIHTPtNE CONTRO BOX BC-' i
(GUNER)TL-I3335-Z
SCR-S08-( ), SCR-S28-( ), 01 SCR-SJ8-( ) in Light Tank MS.
27
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OX
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FIG
.III. FOR LOCATION OF BRACKET,S IN LIGHT
TA
NK
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EE
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.I... ALL SCREWS, NUTS AND LOCKWASHERS
TO
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RO
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. SC
RE
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, NU
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AND SWllCH 80X BC-6U-( )
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.t. WIRE W-14e SHALL BE CUT TO PROPER
LENGTH. ENDS SHALL BE TINNED FOR
ANTENN'" CONNECTIONS.
10. COVER SG-e7,SHALL BE USED WHEN
"'AST SECTIONS "'RE NOT INSTALLED.
SC
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, NU
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AN
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(PART OF INTERPHONE SYSTEM)
RA
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RA
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SPE
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ER
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: fOR ADDITIONAL COMPONENTS
AN
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PA
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S S
EE
PA
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LIS
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SET SCA -e06-( I SEE fiGURE
.10.
I . "'AST BASE MP - 37
L-C
OV
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BG
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I I I I ~
r---
i I I I I I i I I t:_
AN
EN
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Y
APPLETON CONNECTORS
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,610
01 B
ON
ON
UT
S B
L-G
Q
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TE
,: ENOS Of WIRE W -14. AFTER BEING CUT TO
PROPER LENGTH. SHALL BE TINNED fOR CONNECTION
TO BINDING POSTS.
TERMINAL BOX
(INSTALLED BY
MA
NU
FAC
TU
RE
R)
Fig
ure
11, C
ordi
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am o
f Riid
io S
et S
CR
-S06
-( )
iii L
ight
Tm
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MS
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IN -I'
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DM
-42
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6"13
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ET
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IGH
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DBRITISH WIRELESS
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"-Ill I RADIO SET SCR - 508 -( I
-f. I SCR -528-( lOR SCR-538-( I + + 3"
l-t t-t i - I : ~:~~.
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r 3iio 22" .!-3* +- 7 ã
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L-'3
338
Fig
ure
12 .
Mou
ntin
g ho
les
and
loca
tion
for
radi
o se
ts in
SP
01l5
01l£
of L
ight
Tu"
k M
S.
* SEE NOTE
..1&
:'0 COMMON GROUND
SHIELD SHALL BESECURELY SOLDERED
END OF CONDUIT
+
1l18 YELLOW18 R 0
"'1'8 GREEN SHIELDED
..I 8 BLACK
"'18 BLUE SHIELDED"'6 12
I'CONDUIT
+
12V BA TTERY
#18 RED
2 !i60
":HULL TERMINAL
BOX
+#2
SLIP RING~ ASSE'MBLY
ii IS YELLOW-18 BLUE SHIELDED#18 GREEN SHIELDED'*1 8 BLACK
TURRET BASKETTERMINAL BOX
WIRING, TERMINAL BOXES AND SLIP RING ASSEMBLYIS FURNISHED AND INSTALLED BY MANUFACTURER OFVEHICLE. THESE TERMINAL BOXES .ARE USED FOR RADIOAND INTER PHONE WIRING ONLY,
* ALL SHIELDS ON SHIELDED WIRES SHALL BE GROUNDEDON BOTH ENDS.
TL 13339
Figure 13- Wiring ditgru1t of slip rings und terina boxes in ¡¿-volt Light Tank MsAr.
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