GENERAL ELEC

Fig. 5. Schematic DiagramModel HM-171

©John F. Rider

GE TV PAGEMODEL HM-171

ELECTRIC CO.

Resistance of Video and Audio I.F. Transformer Windings Approx imate ly Equal to One Ohm

For test patterns see back of Manual

TV PAGE 1-3J4 , GE

GENERAL EIJ

Fig. 7. Schematic DiagramModel HM-185

©John F. Rider

ELECTRIC CO

istance of Video and Audio I.F. Transformer Windings Approximate ly Equal to One Ohm

For test patterns see back of Manual

VOLUME BRIGHTNESS FOCUS

2 l ln

TUNING CONTRAST TONE

O O o o O OFig. 2. Front Panel Control Location

Model HM-185(Note—Model HM-171 Control Location is same as abovewith Volume and Tone Controls removed.)

zoruo. TTETICAL TTEHTICAJ. WTDK xuammtd. TTOTICAICXTCVBM cnraan un&BiTT BOLD HDLO

o o o o o o o o

Fig. 3. Rear Cover Control LocationModels HM-171 and HM-185

RECEIVER CIRCUIT DESCRIPTION

R.F. UnitStarting at the antenna terminal posts, there follows a

single-stage high-pass filter in the antenna primary to reducevideo I.F. interference, a shunt capacity coupled secondary(C-78), and a video I.F. wave trap (C-95, L-20). The wavetrap is broadly tuned at 11.75 MC. Any one of the threetuned circuits for each of the three television transmission

GENERAL i

bands can be connected into the so. ondary circuit by pressingappropriate button. The econdary circuit wher. properlytuned gives a broad, flat response curve.

Converter-Oscillator and Amplifier

The 6F8G converter employs one half as the oscillatorand the other half as the biased first detector. The oscillatoris plate-tuned with vernier tuning permitted from the frontcontrol panel through trimmer (C-3). The resultant videoI.F. signal of 12.75 MC and the audio I.F. signal of 8.25MC developed in the converter-oscillator tube circuit iscoupled through transformer T-7 to the first 1853 amplifiertube.Audio Unit

The audio I.F. signal is taken off the suppressor of thisfirst 1853 tube. Two stages of 8.25 MC audio I.F. using6SK7's fol low. In the case of the HM-171 the audio I.F.signal is then detected and the resultant audio signal is madeavailable at terminals for insertion into a radio output circuit.In Model HM-185 the 6SK7 stages are followed by a 6SQ7detector and driver, and a 6F6G output stage.Video Unit

Four stages of video I.F. follow the converter stage. Thethird stage incorporates a wave trap for the adjacent audiochannel at 14.25 MC. The nominal pass band for theseamplifiers is 12.75 to 10.75 MC. The second detector uses onehalf of a 6F8G connected as a diode. The other half of the6F8G is used as the first video amplifier. The video output iscoupled directly to the picture tube grid.

*MIASUKED OH SCO VOLT SCALE OF IOOO OHMS PERVOLT METE*

Fig. 9. Socket VoltagesModels HM-171 arid HM-185

Fig. 1. ChussiMod.-! IT

©John F. Rider

GE TV PAGE l-5.y6

ELECTRIC CO.

ororntoo25iser

F.deit.>7

neHo:senelieis

Sync Pulse ClipperSync-pulses are taken off the plate of the clipper section

of the clipper and video output tube. The video signals areseparate by tube cut-off since the plate voltage is only about12 volts.Horizontal Oscillator-output

The clipper feeds the horizontal multivibrator 6N7G di-rectly with needle-point, negative sync pulses. C-46 blocksthe flow of vertical sync pulses, into the horizontal mul t i -vibrator since they are of a low order of frequency. Thehorizontal sync pulses which are amplified by the first sectionof the 6N7G are coupled to the grid of the second section anddrive the circuit into violent oscillation. Resulting plate andgrid current flow sends the tube to cut-off. The sawtoothwave so generated is applied to the horizontal sweep amplifierone section of which is a phase inverter. This push-pull sweepis coupled to the horizontal deflecting plates of the picturetube. Horizontal hold is controlled by varying the chargingrate of the generator circuit, through (R-138). Compensatingfor high frequencj' loss adds a means of controlling horizontallinearity which is done through R-189. Width is varied byregulating the magnitude of the charge through R-140.

Vertical Oscillator-outputThe sync pulses are also coupled into the vertical oscillator

6F8G where the circuits composed of C-73 and R-165 by-passes the horizontal sync pulses. The vertical sync pulsesare coupled into the vertical sweep generator circuit causingviolent oscillatory swings which result in sawtooth waves.

MODELS HM-171, HM-185

The height control (R-146) determines the magnitude of thecharge before the next oscillation thus governing the heightof the picture. R-146, the horizontal hold control, governs therate of charging. The vertical linearity control (R-159) accom-plishes results similar to the horizontal linearity control.The vertical sweep amplifier produces push-pull ou tpu t byphase inversion and this output is applied to the verticaldeflecting plates of the picture tube.

Low Voltage RectifierLow voltage power is obtained from a 5U4G using one stage

of choke filtering and the remaining of the resistance filtertype.

High Voltage RectifierThe anode voltage of the picture tube is obtained from a

single half-wave rectifier with a protective resistor in serieswith the transformer plate lead.

loudspeaker

The voice coil is accurately and permanently centered atthe factory and should seldom give trouble. In case a voicecoil needs recentering it will be necessary to replace the entirecone and voice coil assembly.

NOTE—In no case should the magnet be removed from theassembled position without remagnetizing after replacing it

IHSSIS Parts Layoutd..:l HM-i71

Fig. 4. Chassis P.:rts LayoutModel H M - 1 8 5

GE TV PAGE 1-7Mnr,v:T.s H«_I 71 HM_I Rc;

GENERAL ELECTRIC CO. " > "" ̂

TELEVISION RECEIVERS(REVISED FOR NEW STANDARDS)CHANGES IN THE SCHEMATIC DIAGRAM

1- A RESISTOR OF 4700 OHMS IS CONNECTED ACROSS THE PRIMARY OF THEI.F. TRANSFORMER T7.

2- THE RESISTOR R1233- A RESISTOR OF 4700

IS CHANGED FROM 3900 TO 4700 OHMS.OHMS IS CONNECTED ACROSS THE PRIMARY OF THE

I.F. TRANSFORMER T6.4- A RESISTOR OF 220,000 OHMS IS CONNECTED BETWEEN THE JUNCTION OF

R145 AND R146 AND GROUND.5- A RESISTOR OF 330 OHMS IS INSERTED

THE PICTURE TUBE.IN THE CONTROL GRID LEAD OF

REVISED TELEVISION ALIGNMENT PROCEDURE

The probltm of aligning the several circuits in a televisionreceiver is much more involved and requires more specializedequipment than the alignment of convent ional radio re-ceivers. Fortunately, the use of stable components in care-fully engineered circuits of wide-band characteristic reducesto a minimum the necessity for alignment under normaloperating conditions. Should alignment become necessary /,the following equipment will be needed:

(A) For Video I. F. Alignment(1) Cathode ray oscilloscope.(2) Wide-band sweep oscillator capable of sweeping

from 7.5 to 15 MC.(3) Marker system either provided

lator or from separate signallocating JZ.YI) and 1J./5 fvl pou

(B) Sound I.F. Alignment

in sweep oscil-generator for

it1"

(1) Cathode ray oscilloscope.(2) Wide-band sweep oscillator capable of sweeping

from 7.75 to 8.75 MC.(3) Marker system either provided in sweep oscil-

lator or from separate signal generator for locating8.15 and 8.35 MC points.

^) R.F. Alignment ;(1) Cathode ray oscilloscope(2) Wide-band sweep oscillator capable of sweeping

the following bands:(a) 50 to 56 MC(b) 60 to 66 MC(c) 66 to 72 MC

* (d) 78 to 84 MC* Those receivers which were aligned at the factory for Band No. 4 must

use this r-f sweep frequency.

VIDEO I.F. ALIGNMENT

Input Freq.

1.

2. 7.5-15 MC Sweep

Point ofInput Adjustments

Conlrol gridof 6AB7

(2nd videoI.F.)

Comments

Connect vertical input cable of cathode ray oscilloscopeacross resistor R-182 of 6F8G video detector.Connect output tap of video I.F. sweep oscillator tocontrol grid of 6AB7 (2nd video I.F.). Connect groundlead to chassis. Turn contrast control (R-108) to abouthalf of maximum or to a point which gives satisfactoryvertical deflection without overloading. Set horizontalcentering and gain controls on oscilloscope to give suitablehorizontal deflection. Adjust sweep phase to give curvesimilar to Fig. 7, curve 1.

NOTE: If sweep oscillator has marker points internally supplied, steps 3 and 4 may be omitted.

Signal Input

3. Same as in No. 2plus 12.75 MC

4. Same as in No. 2plus 10.75 MC

5. 7.5-15 MC Sweep .

6. 7.5-15 MC Sweep

7. 7.5-15 MC Sweep

8. 7.5-15 MC Sweep

9. 14.25 MC

Point ofInput

Same as inNo. 2

Same as inNo. 2

Control grid6AC7 (4thvideo IF)

Control grid6AB7-3rdvideo IF

Control grid 6AB7(2nd video IF)Convertergrid, 6F8G

Convertergrid, 6F8G

Adjustments

Iron cores of de-tector trans-former T-6

Iron cores of 4thvideo transformer T-5

Iron cores of 3rdvideo transformer T-4

Iron cores of 2ndvideo transformer T-3& 1st video transform-er T-4Series iron core of 3rdvideo transformer T-4

Comments

Superimpose an accurately calibrated 12.75 MC signal inparallel with sweep signal. Signal will appear on sweepcurve in oscilloscope as a wiggle, the center of which is athin black line. With a pen or crayon mark this point onthe screen of the oscilloscope. (NOTE: Hereafter the hor-izontal controls on the oscilloscope must not be touched.)Superimpose an accurately calibrated 10.75 MC signal inparallel with sweep signal. Mark screen at point wheresignal appears on curve as in No. 3 above.Do not touch horizontal controls of oscilloscope. Adjustiron cores of T-6 until curve appears similar to Fig. 7,curve 1, with relatively flat top, 12.75 MC mark at cornerof one side and 10.75 MC mark at corner of other side.These conditions plus maximum amplitude insure correctalignment.Adjust iron cores for maximum gain, flatness and propercentering between markers as described in step No. 5 andillustrated in Fig. 7, curve 1.Adjust primary and secondary iron cores for maximumgain, flatness and proper centering. See Fig. 7, curve 1.Connect low tap to grid (on top of tube). Adjust primaryand secondary iron cores for maximum gain, flatness andproper centering. See Fig. 7, curve 1.

Connect low tap to grid. Reduce horizontal gain to min-imum. Adjust iron core for minimum line length.

©John F. Rider

TV PAGE 1-8 GEMODELS HM-171, HM-185

GENERAL ELECTRIC CO.

REVISED TELEVISION ALIGNMENT PROCEDURE CONT.

AUDIO I.F. ALIGNMENTNOTE: In order to obtain frequency modulation detection in the sound channel with good fidelity, the audio I.F. amplifiers mustbe aligned to give a satisfactory selectivity curve for slope detection. For this reason a sweep generator and oscilloscope are neces-sary to obtain the resultant curve shown in Fig. 7, curve 3.

SignalInput

1.

'2.

8.25 MC with 30%tone modulation

7.75 to 8.75 MCsweep

Point ofInput

6F8G con-verter grid

Grid of 2ndaudio I.F.,6SK7

Adjustments

Tune all audio I.F.iron cores

Comments

Use an oscilloscope or high resistance voltmeter across— audio output terminals of HM171 or volume control,R126, of the Model HM185. Set tone control for maxi-mum high frequency response. Peak all trimmers for amaximum output.Connect oscilloscope input to chassis ground and junctionof resistors (R204 and R125 in HM-171) (R125 and R196in HM185) at diode load. Superimpose an accuratelycalibrated 8.15 MC signal in parallel with sweep signal.This signal will appear on sweep curve in oscilloscope as awiggle at the center of which a mark should be made withpen or crayon on oscilloscope screen. (Hereafter the hori-zontal controls on the oscilloscope must not be adjusted.)Next an 8.35 MC signal mark should similarly be made.

NOTE: If sweep oscillator has marker points.internally supplied, omit step 2.

7.75 to 8.75 MCsweep

Convertergrid 6F8G

Adjust iron coresof 1st audio I.F.coil L12 and the2nd audio I.F.transformer T-9

With oscilloscope connected as in step 2, adjust coresuntil curve appears as in Fig. 7, curve 3 being sure thatthe steep side of curve lies between the 8.15 and 8.35 MCmarkers as indicated. NOTE: The shape of the curve be-tween 8.15 and 8.35 MC must be straight, otherwise dis-tortion will result in FM reception.

B.TS 10.75MC MC

8.7 MC 6.15 MC

Fig. 7. Television Alignment Curves

TELEVISION ALIGNMENT PROCEDURER.F. ALIGNMENT

Signal Input

1.

2.

3.

4.

5.

50 to 56 MC Sweep

60 to 66 MC Sweep

66 to 72 MC Sweep*

C a l i b r a t e d s ignagenerator 55.75 MC65.75 MC, 71.75MC" with 30% tonemodulation.

Point ofInput

Antennaterminals

Antennaterminals

AntennaterminalsAntennaterminals

Adjustments

Band width adjustmentcoupling condenser

(L-8), (C-70),(C-67)

(L-9), (C-71),(C-68)

(L-10), (C-72),(C-69)(L8), (L9), (L10)

Comments

Turn C-78 in until tight, then open approximately 1/16of a turn.Connect oscilloscope to junction R124 and C25; opencircuit R178, short R102 to ground. Depress No. 1 pushDutton. Set tuning control to mid-rotation. Adjust L-8until curve is centered between maximum horizontalsweep points. Adjust C-70 and C-67 for maximum ampli-tude. See Fig. 7, curve 2.Depress No. 2 push button. Leave tuning control at mid-rotation point. Adjust L-9 for centering; C-71 and C-68for maximum amplitude. See Fig. 7, curve 2.Depress No. 3 push button. Adjust L-10 for centering;C-72, C-69 for maximum amplitude. See Fig. 7, curve 2.To align oscillator for various bands, set tuning control(C-3) at mid-rotation; then set brass slugs of coils L8,L9, L10 until maximum audio tone is heard.

weep will be 78 to 84 megacycles. ** 83.75 Megacycles when Band No. 4 is set up on the No. 3 key.

WAVE TRAP ALIGNMENT* In some localities this

1. 11.75 MC with 400cycle modulation

Antennaterminals

Wave trap trim-mer, C-95

Adjust for minimum signal response as seen on oscillo-scope after connections made in Step 2 are re-established;then connect oscilloscope across R182.

©John F. Rider

GE TV PAGE 1-9GENERAL ELECTRIC CO. MODELS HM-171, HM-185

RECOMMENDED PROCEDURE FOR READJUSTING THE R.F. CIRCUITS TO CONFORM TO THEHEW TELEVISION FREQUENCY ALLOCATIONS ON THE LOWER CHANNELS.

Necessary Equipment:HT" Oscilloscope - G.E. Model CRO-5-S or equivalent.

(2) Wide-band sweep oscillator capable of sweeping the following bands:

(a) 54 to 60 MC(b) 66 to 72 lie(c) ?6 to 62 MC

(3) Accurately calibrated absorption v/ave raeter with a frequency rangeof at least 54 to 62 MC.

(4) Accurately calibrated signal generator with a frequency range of atleast 59.75 to 81.75 MC with 30$ tone modulation.

(5) 50,000 ohm 1/2-W resistor.

PROCEDURE FOR CIRCUITS ASSOCIATE) WITH ;fl PUSH BUTTON.

1. Disconnect low side of R-102 and connect a 50,000 ohm resistor inseries with it to ground.

2. Remove all rectifier tubes.

3. Connect vertical input of oscilloscope across R-102 and the 50,000ohm resistor.

4. Conne-ct wide band sweep generator to antenna terminals and adjustfor a 54-60 MC Sweep. Output of generator should be set near maximum.

5. Depress the //I push-button (heaters should be on) and adjust sweepand sync controls on scope to give a curve similar to Fig. 1.

6,. Turn band width adjustment coupling condenser C-78 in until tight, thenopen approximately 1/16 of a turn.

7. Check location of the 54 and 60 MC points on the curve with theabsorption wave meter.

$. Adjust trimmers C-67 and C-70 until the 54 and 60 MC points appearon the curve as shown in Fig. 2. It will probably be necessary todecrease the inductance of L-ll somewhat by spreading the coil,before the 54 and 60 MC points conic in at the proper place-.

9. Remove the 50,000 ohm resistor, connect R-102 back to normal, removescope and replace rectifier tubes.

10. Disconnect wide band sweep generator from antenna terminals aridconnect in its place the modulated signal generator adjusted toexactly 59.75 1IC.

©John F. Rider

TV PAGE 1-10 GEMODELS HM-171, HM-185 GENERAL ELECTRIC CO.

11. Set tuning control C-3 to mid-rotation. Adjust brass slug of L-8until maximum audio tone is heard, -with volume control turned part-ially up. If -slug does not have sufficient range, it vail be ncc-ess.iry to decrease the. inductance of L-8 somewhat by spreading thecoil.

PROCEDURE FOP. CIRCUITS ASSOCIATED WITH #2 P.B.

1. Same as for the #1 P. B.2. ditto3.4. " except that the oscillator is adjusted for a 66-72 MC sweep.5. Depress the //2 push button.6. Do not re-adjust C-76. Check location of the 66-72 IvJC points on

curve with absorption meter.7. Adjust trimmers C-68 and C-71 until the 66-72 MC points appear on

curve as shown in Fig. 4. It may be necessary to decrease the in-ductance of L-13 by spreading the coil in c-rder to bring the 66-72LIC points at the proper place on the curve.

8. Same as in step #9 for the #1 P. B.9. " " " " #10 » " " » except that the modulated signal

generator is adjusted to exactly71.75 MC.

10. Same as in step #11 for the #1 push button, except that the brassslug of L-9 is adjusted andit will be necessary to de-crease the inductance ofL-9 by spreading the coil.

PROCEDURE FOR CIRCUITS ASSOCIATE .WITH ff3 P.E.

1. Same as for the #1 P.B.2. ditto3.4. " , -except that the oscillator is adjusted for a 76-82 MC sweep.5. Depress the //3 push button.6. Check location of the 76-82 MC points on curve with absorption wave-

meter.7. Adjust trimmers C-69 and C-72 uritil the 76-82 MC points appear on

curve as shown in Fig. 5. It vdll be necessary to increase the in-ductance of L-14 somewhat by squeezing the coil together in orderto bring the 76-82 MC points at the proper place on the curve.

8. Same as in stop #9 for the #1 P.B.9. rt n it ii #10 " " " " except that the modulated signal

generator is adjusted to exactly81,75 MC.

10. Same as in step #11 for the #1 P.B. - except that the brass slug ofL-10 is adjusted, and it willbe necessary to increase theinductance of L-10 by squeezingthe coil together.

©John F. Rider

GE TV PAGE 1-1GENERAL ELECTRIC CO. MODJuLS HM-171, HM-185

62 72

GENERAL INFORMATIONGeneral Electric Picture Receiver and Sound Converter

Model HM-171, ii a table type, 17-tube, superheterodynereceiver equipped with a 6-inch, electrostatic-deflected, pic-ture tube. The receiver works in conjunction with any radioreceiver, which is designed for phonograph reproduction,to reproduce -the sound portion of the television broad-cast.

General Electric Television Receiver, Model HM-185is a console type, 18-tube, superheterodyne receiver with acomplete sound channel and using a 6-inchp electrostatic-deflected picture tube.

Additional design features include iron-core I.F. tuning,automatic tone compensation, automatic volume control andconstant high-gain antenna coupling circuit.Electric*! Specifications

Maximum Electrical OutputModel HM-171. (Dependent upon radio receiver output)Model HM-185 5 watts

Loudspeaker—"Alnico" Magnetic DynamicModel HM-185Cone Diameter 12 inchesVoice Coil Impedance (400 cycles) 3.5 ohms

Picture SiteHeight 3 Ji inchesWidth ' 4Jf inches

Model

HM-171HM-185

PowerSupply(Voltl)

115-126116-125

Frequency(Cyclei per

Second)

6060

PowerConsumption

(Watts)

170170

Tubes

Tuning Frequency RangeBand No. 1 44-50 MC.Band No.^2 50-56 MC.Band No. 3 66-72 MC.

Intermediate FrequenciesTelevision Vifleo (Picture) 12.75 MC.Television Arittio 8.28 MC.

Converter-Oscillator GE-6P8GAudio & Video I.P. Amplifier GE-1853/6AB72nd and 3r8 Audio I.F. Amplifiers.., (2)GE-6SK7Det., Audio, AVC (HM-185) GE-6SQ7Det. and AVC (HM-171) GE-6H6Audio Output (HM-185) GE-6F6G2nd and 3rd Video I.F. Amplifiers. .. (2)GE-1853/6AB74th Video I.F. Amplifier GE-1852/6AC7Video Det. and 1st Video Amplifier. .. .GE-6F8GVideo Output and Sync. Clipper GE-6F8GVertical Oscillator GE-6F8GVertical Output .GE-6N7GHorizontal Oscillator GE-6N7GHorizontal Output GE-6F8GHigh Voltage Rectifier GE-879/2X2Low Voltage Rectifier GE-5U4GPicture Tube GE-5BP4

©John F. Rider

TV PAGE 1-12 GEMODELS HM-171, HM-185

GENERAL ELECTRIC CO.

PLATEH.V. met.

Fig. 8. Chassis Trimmer LocationModels HM-171 and HM-185

ANTENNAIn general, the television antenna should be of

the dipole type located as high as is practical and in an areawhere the horizon in the direction of the television transmitteris not obstructed by buildings or structures. A noticeablegain in signal strength will be obtained as antenna height isincreased. Since television radiation reacts similarly to lightwaves, reflection problems arise which often modify other-wise ideal installation locations. Consideration must also begiven noise sources within buildings, or ignition noises fromvehicles on adjacent streets. It is usually best to locate thedipole antenna on the side of the building away from thestreet thus allowing the building to shield the antenna fromignition noises.

The dipole should be erected with arms parallel to the groundand at right angles to the direction of the television station.If noise or reflection interference exist it may be better topoint the dipole arms in the direction of the interference.

Noise interference and poor signal strength may dictatethe use of a reflector. A reflector will increase the signalstrength appreciably as well as increase the horizontal direc-tivity.

CAUTIONARY INSTRUCTIONSExtremely high voltages (2500 volts or more) are used in

the operation of this receiver; therefore, every precautionmust be exercised to insure safety to the service engineerand to the customer.

The back cover while in place, protects the user and shouldnever be removed except by a qualified television serviceengineer.

The power-cord plug should not be inserted in a powersupply outlet until a good, solid ground connection has beenproperly made to the receiver chassis.

For safety, the following operations must be performedwith the power plug disconnected before working on thereceiver with the back cover removed:

1. Locate the 879/2X2 high voltage rectifier tube socket

2. Unsolder the lead (color-coded brown and yellow andmeasuring 3300 ohms to chassis) which is connectedto the 879/2X2 tube socket.

3. Thoroughly insulate the exposed end of this lead.All adjustments not accessible with the baqk cover it

place can be made without energizing the high-voltagtcircuits.

Servicing of the high-voltage circuits can be satisfactorilyperformed with the power-cord removed from any powersupply outlet. A resistance check of the circuit componentswill indicate any trouble existing. (HIGH VOLTAGESSHOULD NEVER BE MEASURED.)

The "picture tube" is highly evacuated and is consequentlysubject to a very great air pressure. If it is broken, glassfragments will be violently expelled. Handle with care, usingsafety goggles and gloves.

The large end of the "picture tube" particularly that partat the rim of the viewing surface—must not be struck,scratched, or subjected to more than moderate pressure'DO NOT FORCE" THE SOCKET ONTO THE TUBEOR STRAIN ANY EXTERNAL CONNECTIONS. If itfails to slip into place smoothly, investigate and remove thecause of the trouble.

©John F. Rider

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150,

000

oh

ma

1 W

. ca

rbon

(R-1

58)

RE

SIS

TO

R—

«80

ohm

s 2

W.

carb

on(R

-134

)R

ES

IST

OR

—33

00

oh

mi

2 W

- ca

rboi

(R-1

81)

(Pkg

. 5)

RE

SIS

TO

R—

39,0

00

ohm

s 2

W.

carb

on(R

-I27

)R

ES

IST

OR

—12

.000

o

hm

i 3

W.

carb

on(R

-119

)R

ES

IST

OR

—22

0 o

hm

, X

W

. ca

rbon

(R-1

06,

110,

114

) (P

kg

. 5)

RE

SIS

TO

R—

270

oh

m,

X

-W«

carb

on(R

-129

) (P

kg.

»)R

ES

IST

OR

—47

0 oh

ms

X

W.

carb

on(R

-H8

, 18

1) (

Pk

g.

5)R

ES

IST

OR

—10

00

ohm

s X

W

. ca

rbon

(R-1

02,

150.

152

) (P

kg

. 5)

RE

SIS

TO

R—

2200

oh

ms

X

W.

carb

on(R

-124

, 13

0

on

HM

-171

, 153,

182)

(Pk

».

6).E

SIS

TO

R—

2700

o

hm

, X

W

. ca

rbon

•RQ

."l2

71(R

-I09

) (P

kg.

5)R

—33

00,

.R-1

13)

(Pkg

. 5)

•RQ

-127

3 R

ES

IST

OR

—38

00

ohm

a X

W

. ca

rbon

RE

SIS

TO

R...

......

......

......

.o

hm

i X

W

. ca

rbon

•RQ

-128

3

•RQ

-128

5

•RQ

-128

9

i) W.

carb

on(R

-117

, 123, 1

90, 2

03)

(Pk

i. 6

)R

ES

IST

OR

—10

.000

o

hm

i X

(R-1

64)

(Pkg

. 6)

RE

SIS

TO

R-1

2,0

00

o

hm

i X

W

. ca

rbon

(R-1

16)

(Pk

g.

6)R

ES

IST

OR

—18

.000

oh

m»

X

W,

carb

on(R

-101

, 19

5) (P

k|.

5).

Sto

ck N

o

'RC

-132

•RC

-133

RC

-134

RC

.I4

7

'RC

-157

RC

-192

RC

-213

'RC

-220

'RC

-224

'RC

.227

RC

-232

'RC

-235

RC

-238

RC

-242

RC

-246

'RC

-274

RC

-293

RC

-429

RC

-S98

RC

-189

5

RC

-513

8

'RQ

-133

5

RQ

-133

9

'RQ

-134

1

RQ

134

8

RQ

-142

0R

Q-1

480

'RQ

-146

1

RQ

-I47

I

RQ

-147

5

RQ

-147

6

RQ

-148

5

RQ

-148

9

'RQ

-149

9

RS

-I79

RS

-2S

2R

S-2

57R

S-2

65R

S-1

011

RS

-180

3R

T-4

71

RT

-954

'RW

-101

RW

-112

RX

-062

rizc

d D

eale

r)

Des

crip

ti

CA

PA

CIT

OR

—0

.1

mfd

. 200

0 V

. pa

pei

(C-5

8).C

AP

AC

ITO

R—

.06

mfd

. 20

00

V.

pape

iI

(C-5

7)IC

AP

AC

ITO

R—

0.1

mfd

. 100

0 V

. pa

pei

! (C

-65)

iCA

PA

CIT

OR

—.2

5 m

id.'

400

V.

pape

r(C

-47)

CA

PA

CIT

OR

—0

.5

mfd

. 20

0 V

. pa

pcC

-63)

CA

PA

CIT

OR

—.0

03

mfd

. 200

0 V

. pa

pei

(C-6

4. 6

6. 8

5, 8

6)IC

AP

AC

ITO

R —

12 m

mf

mic

a (C

-15)

iCA

PA

CIT

OR

—6

mm

f- m

ica

(C-8

3)IC

AP

AC

ITO

R—

22

mm

f. m

ica

(C-4

, 21

).IC

AP

AC

ITO

R—

82

mm

f. m

ica

(C-7

9. 8

0)-

JCA

PA

CIT

OR

—47

mm

f. m

ica

(C-3

2. 9

5)-

CA

PA

CIT

OR

—1

00

mm

f-

mic

a (C

-6. 4

6).

CA

PA

CIT

OR

—6

8 m

mf.

mic

a (C

-54)

..

.IC

AP

AC

ITO

R —

150

mm

f. m

ica

(C-2

3)

...

JCA

PA

CIT

OR

—18

0 m

mf

mic

l (C

-40)

CA

PA

CIT

OR

—3

30

mm

f- m

ica

(C-5

, 8.

87)

CA

PA

CIT

OR

—4

70

mm

l. m

ica

(C-9

2)C

AP

AC

ITO

R—

30

mid

. 50

0 V

w

et

elec

trol

ytic

(C

-59.

60)

CA

PA

CIT

OR

—R

.P.

padd

er

(C-7

8)C

LA

MP

—A

nt.

coi

l m

ou

nti

ng

clam

p (P

kg

.5)

CA

PA

CIT

OR

—2

0 m

fd

25 V

.. 10

mid

. 45

0V

., dr

y el

ectr

olyt

ic (

C-3

9, 7

7)

RE

SIS

TO

R—

1.5

meg

ohm

s X

W

. ca

rbon

(R-1

91)

(Pkg

. 5

) :

.,..

RE

SIS

TO

R—

22

meg

ohm

s H

W

. ca

rbon

(R-1

25,

149.

155

. 16

6, 1

86)

(Pk

g.

5)

'R

ES

IST

OR

—2

.7

meg

ohm

X

W

. ca

rbon

!(R

.147

) (P

kg.

5)R

ES

IST

OR

—5.

6 m

egoh

ms

H

W.

carb

on!

(R-1

73,

174. 1

87, 18

8) (

Pkg

. 5)

RE

SIS

TO

R—

33 o

hms

1 W

. car

bon

(R-1

41)

RE

SIS

TO

R —

1200

oh

ms

I W

. ca

rbon

(R-1

22)

RE

SIS

TO

R—

1500

oh

ms

1 W

. ca

rbon

(R-I

76

)R

ES

IST

OR

—33

00

ohm

s 1

W.

carb

or(R

-154

)R

ES

IST

OR

—47

00

ohm

s I

W.

carb

oi(R

-107

, 11

2. 1

18)

RE

SIS

TO

R—

5600

oh

ms

1 W

. ca

rboi

(R-1

30 o

n H

M-1

8S,

197)

RE

SIS

TO

R—

12,0

00

ohm

s 1

W.

carb

oi(R

-119

)R

ES

IST

OR

—18

,000

oh

ms

1 W

. ca

rboi

(R-1

78)

RE

SIS

TO

R—

47,0

00

ohm

s 1

W.

carb

on(R

-184

. 199)

SH

IEL

D—

6P

8G

tub

e sh

ield

SO

CK

ET

—O

ctal

tu

be

sock

etS

OC

KE

T—

Ele

ctro

lyti

c m

ount

ing

sock

etS

OC

KE

T—

Lig

ht

sock

et a

ssem

bly

SP

EA

KE

R —

12-i

nch

perm

anen

t m

agne

t.S

HIE

LD

—6

N7

G t

ub

e sh

ield

»nd

cli

pT

RA

NS

FO

RM

ER

—O

utp

ut

tran

sfor

me

(T-1

3)T

ER

MIN

AL

—S

pea

ker

le

ad

com

tact

cl

ip(P

kg.

10)

WA

SH

ER

—F

elt

was

her

for

cont

rol

shaf

ts(P

kg.

10)

jW

AS

HE

R—

Tra

nsfo

rmer

sh

aft

tens

ion!

wai

her

(Pk

g. 1

0)A

SS

EM

BL

Y—

Spe

aker

mo

un

tin

g as

sem

bly

ItT

C-5

006

CO

NT

RO

L—

500,

000

ohm

to

ne

con

132)

RT

C-5

007

CO

NT

RO

L—

2.0

m

egoh

m v

aria

ble

: (R

-143

. 14

6, 1

59)

RT

C-5

008

'CO

NT

RO

L—

2.0

meg

ohm

vo

lum

ei

(R-1

26)

RT

C-5

009

ICO

NT

RO

L—

0.5

meg

ohm

w

idth

rR-1

40)

RT

C-5

010

RT

C-6

000

CO

NT

RO

L—

3-21

(C-3

)C

AR

D—

Tel

evis

ic

cont

rol

cont

rol

(Pk

g 10

)R

TC

-600

1 !C

AR

D—

Tel

e,

10

) ..

RT

C-6

002

CA

RD

—T

ele

! (P

kg

. 1

0)

ILE

—P

o.

ib N

o. 2

(P

kg

:

tab

N

o. "

3:

.R

TC

-7U

OO

IC

AB

LE

—P

ower

cab

le w

ith

plug

sR

TC

-700

I 'C

AB

LE

—P

ictu

re t

ub

e ca

ble

and

11 p

rc

RT

C-8

001

RT

E-1

00

CL

AM

P—

Pic

ture

tu

be

clam

p (u

ppei

CU

SH

ION

—P

ictu

re t

ube

face

cus

hic

Sto

ck N

o. I

Des

crip

tion

ES

CU

TC

HE

ON

—P

ush

butt

on

escu

tche

on!

RT

F-1

00

(FU

SE

HO

LD

ER

—P

ow

er l

ine

fuse

hol

der

RT

G-I

OO

IG

RID

CL

IP—

Insu

late

d 2

x2

grid

cli

pR

TG

-201

iC

RO

MM

ET

—R

ub

ber

gr

omm

et

for

insu

-!

lati

ng

chas

sis

hole

fr

om

pict

ure

tube

!:

cabl

e.

. .

.R

TG

-200

G

RO

MM

ET

—R

ub

ber

b

um

per

on

pict

ure!

tub

e sh

ield

fun

nel

(Pkg

. 5)

i

RT

L-1

000

CO

IL —

R.F

. co

il (B

and

No

1) (

L-l

l)R

TL

-100

1 ~

-

..

..

..

..

..

.R

TL

-I00

2

RT

Q-1

000

RE

SIS

TO

R—

350

ohm

s 10

W.

wir

e w

ound

(R-I

77)

RT

Cj-

1001

iR

ES

IST

OR

—11

00 o

hms

16 W

. w

ire

wou

nd(R

-l6

3o

n H

M-1

85)

RT

Q-1

002

(RE

SIS

TO

R —

1300

ohm

s 16

W.

wir

e w

ound

i (R

-16

3o

n H

M-1

71)

RT

S-H

IO

ISO

CK

ET

—C

hass

is p

ower

rec

epta

cle.

..R

TS

-101

'S

OC

KE

T-2

x 2

tub

e so

cket

(4

pron

g).

.R

TS

-300

,S

HA

FT

—F

ocus

con

trol

ins

ulat

ed s

haft

. ..

RT

S-3

01

SH

AF

T—

Coi

l tu

ning

cor

e sh

aft

RT

S-5

00

SW

ITC

H—

Sta

tio

n se

lect

or

swit

ch (

S-l

)..

RT

S-7

00

'ST

UD

—4

^-i

n.

Ig. s

tud

for

mou

ntin

g R

-163

RT

S-7

01

JSE

TS

CR

EW

—H

eadl

ess

sets

crew

for

foc

usco

ntro

l sh

aft

asse

mbl

y (P

kg.

5)R

TT

-001

0 IT

RA

NS

FO

RM

ER

—P

ow

er

tran

sfo

rmer

!'

(T-I

2)

. .

. .-

RT

T-2

000

ITR

AN

SF

OR

ME

R—

An

ten

na

tran

sfor

me,

i (T

-l)

RT

T-3

00

0'T

RA

NS

FO

RM

ER

— 1

st V

ideo

I.

F.

tran

si

form

er (

T-7

)R

TT

-3n

OO

|TR

AN

SP

OR

ME

R—

2n

d V

ideo

I.

F tr

ans-

form

er (

T-3

)R

TT

-400

0 T

RA

NS

FO

RM

ER

—3

rd

Vid

eo

I.P

. tr

ans-

form

er (

T.4

)R

TT

-450

0

RT

T-5

000

TR

AN

SF

OR

ME

R—

4th

V

ideo

I.

F,

tran

sfo

rmer

(T

-5)

TR

AN

SF

OR

ME

R—

5lh

V

ideo

I.

F.

tram

-

RT

L-2

000

CO

IL—

R F

. co

il (B

and

No.

2)

(L-1

3)C

OIL

—R

F

coil

(Ban

d N

o. 3

) (L

-14)

CO

IL—

Con

vert

er g

rid

osci

llat

o: cilia

'I

(T-2

)r

coil

form

er (

T-6

)R

TT

70

00

TR

AN

SF

OR

ME

R—

1st

A

ud

io I

.F.

r (L

-12)

RT

T-7

500

(TR

AN

SF

OR

ME

R—

2n

d A

udio

I.F

. tr

ana-

1

r (T

-8)

RT

T-fc

OO

OT

RA

NS

FO

RM

ER

—3

rd

Aud

io I

.F.

tram

-

RT

L-2

001

iCO

IL—

C'

i (T

-2)

......

......

......

..R

TL

-300

0 IC

OIL

— O

scil

lato

r tu

ning

coi

l (B

and

No.

1)

(L-8

) ...

......

...

]

RT

L-3

001

ICO

IL—

Osc

illa

tor

tuni

ng

coil

(Bun

d N

o.i

2)

(L-9

) ...

......

....

jR

TL

-300

2 IC

OIL

— O

scil

lato

r tu

ning

coi

l (B

and

No.

3)

I (L

-10)

....

........

........

... i

RT

L-4

000

CH

OK

E—

Osc

illa

tor

Plu

s B

cho

ke (

L-l

)R

TL

-400

1 IC

HO

KE

— 1

st V

ideo

cho

ke (

L-3

)R

TL

-400

2 iC

HO

KE

— V

ideo

dio

de c

hoke

(L

-2)

....

.R

TL

-400

3 IC

HO

KE

— V

ideo

ou

tpu

t ch

oke

(L-6

) .

form

er

(T-9

)J

TR

AM

SP

OR

ME

R—

Ver

t,

osci

llat

or

tran

s-i

form

er (

T-l

!)R

T\

100

JWA

SH

ER

—P

ictu

re-t

ub

e re

ar

supp

ort

ish

er (

rubb

er)

RT

W-5

IIII

[W

IND

OW

—P

ictu

re

tub

e sa

fety

w

indo

w(H

M-1

85)

RT

W-5

01

I WIN

DO

W—

Cel

lulo

id

stat

ion

lett

er w

in-

dow

(P

kg.

5)R

TW

-502

W

IND

OW

—P

ictu

re

tub

e sa

fety

w

indo

w(H

M-1

71)

RT

X-1

000

AS

SE

MB

LY

—W

ave

trap

ass

embl

y (L

-lfl

j 17

, 18

, 19

)IV

1 l*

-[*n

tl>R

TM

-IO

OO

•RQ

-129

3

•RQ

-129

6

•RQ

.129

7

•RQ

-129

9

•RO

.I3

01

•RQ

-130

3

•RQ

-130

6

•RQ

-130

7

•RQ

-131

1

•RQ

-131

3

•RQ

-131

5

•RQ

-131

7

•RQ

-131

9

•RQ

-132

1

•RQ

-)32

3

•Rfl

-132

7

•RQ

-133

1

i^o

n^i

v-i

iv —

/-lu

s D

rea

ctor

iL

.-io

f .

...

MA

SK

— P

ictu

re t

ube

mas

kR

ES

IST

OR

— 27

,000

on

ma

X

W.

carb

on(R

-103

) (P

kg

, 6)

RE

SIS

TO

R—

33.0

00

ohm

s X

W

. ca

rbon

(R-1

65)

(Pkg

. 5)

RE

SIS

TO

R—

38,0

00 o

hmi,

X

W

. ca

rbon

(R-1

06)

(Pk

g. 5

)R

ES

IST

OR

— 4

7,00

0 o

hm

i X

W

. ca

rbon

(R-1

92,

196)

(P

kg

. 5)

RE

SIS

TO

R—

56,0

00

oh

mi

X

W.

carb

on(R

-205

) (P

kg.

5)

'.R

ES

IST

OR

— 68

.000

oh

ms

X

W.

carb

on(R

-206

) (P

kg.

5)R

ES

IST

OR

— 8

2,00

0 o

hm

. X

W

. ca

rbon

(R-2

04)

(Pkg

. 6)

RE

SIS

TO

R—

100

,000

oh

mi

X

W.

carb

on(R

-I11

) (P

kg.

5)R

ES

IST

OR

-150.0

00

oh

m,,

X

W

. ca

rbon

(R-1

31,

137, 1

45)

(Pkg

. 5)

RE

SIS

TO

R —

180

,000

ohm

s X

W

. ca

rbon

(R-1

62)

(Pkg

. 5)

RE

SIS

TO

R—

220

.000

ohm

a H

W

. ca

rbon

(R-1

04,

US

, 128. 1

42. 1

71,

172)

(Pk

g.

5)R

ES

IST

OR

— 2

70,0

00 o

hm

i X

W

. ca

rbon

(R-1

90)

(Pkg

. 6)

RE

SIS

TO

R—

330

.000

oh

m,

X

W

carb

on(R

. 175

) (P

kg

. 5}

RE

SIS

TO

R—

390

,000

oh

mi

X

W.

carb

on(R

-194

) (P

kg.

5)R

ES

IST

OR

— 4

70,0

00 o

hmi

X

W.

carb

on(R

-139

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kg.

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, 133,

135,

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44

, 111

, 1M

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