JEWELL Pattern 444 User manual

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Its
The Most Complete
Set Tester Ever BO
The Jewell Pattern 444 Set Analyzer tests every circuit in eny
set, including those using variable mu, and output and radio e-
quency pentode tubes.
Pattern 444 Set Analyzer, complete with all
accessories. Jewell Data Service and data pad.
List Price $ 112.00 Servicemen's Price $84.00
•
An improved switching system for selecting circuit tests separates
all A.C. and D.C. tests. This speeds testing and greatly reduces>
the possibility of securing incorrect readings.
In addition to all the voltage and current measuring ranges beg
available at time saving pin jack terminals, a triple range output
meter circuit and a triple range ohmmeter are provided for use i.
set servicing. A.C. current ranges up to 8 amperes are provided it
for servicing other household appliances such as vacuum cleaners,
oil burners, and electric refrigerators.
Every possible feature has been incorporated that will reduce
wear and make the instrument more sturdy. The elimination of
binding posts which loosen and break, non-shatterable glass scaie
covers, and a test plug and cable that are separable from the ana-
lyzer by a multi- plug at the instrument panel are typical examples.
The Jewell Analyzer Data Service is more complete than ever
this season, and adds greatly to the value of this instrument.
A Portable Oscillator That's Reliable!
Pattern 560 Test Oscillatoi, complete with
two 230 tubes, batteries, and portable triple-
range output meter.
List Price $ 102.00
Servicemen's Price $ 76.50
Pattern 560 Test Oscillator without output
mete,
List Price $ 82.00
Servicemen's Price $ 61.50
Pattern 559 Output Meter only.
List Price $ 15.00
Servicemen's Price $ 15.00
Radio frequency circuits, whether in a tuned- radio- frequency or
super- heterodyne receiver, must be accurately adjusted to obtain
the greatest sensitivity and selectivity.
The Jewell Pattern 560 Test Oscillator and 559 Output Meter
are designed and built to meet the needs of the radio servicemen.
The simplicity of operation, hair line accuracy, and assured relia-
bility are unequalled features of this portable test oscillator.
The Jewell Pattern 560 Portable Test Oscillator covers the com-
plete broadcast band from 550 to 1500 K.C., and the complete
intermediate frequency band from 125 to 185 K.C. The Jewell
Test Oscillator is adequate for testing and adjusting every super- het
receiver built today and provides for future design in that it covers
the band from 125 to 185 K.C.
Write for a bulletin describing the
complete Jewell Radio Service Instru-
ment Line. You can pay for them
from your extra profits.
sZi
Jewell Electrical Instrument Co., 1642-V Walnut St., Chicagoei
•
•

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OFFICIAL RADIO SERVIE - haAAJAL
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INDEX TO COMMERCIAL WIRING DIAGRAMS
wiEni
the issuance of each set of suppl emen ts, a corn pletely revised and up-to-date index is furnished. To use this
TH
remove all of the pages from the cover; throw away the old index pages and replace them with the new ones;
and then insert the supplement pages in their numerical and alphabetical order. Then replace the cover and the book
is complete.
, Oft", the trade name of a set is known by the user of t his book but the name of the manufacturer not known.
ching for diagrams, if the particular diagram you desire cannot be found, be sure to look through the Mis-
cellaW section at the end of this index. If it is not listed there look through the Trade Name Index; this gives the name
of the iiufacturer for each trade name. Since all diagram s are listed in the index in alphabetical order ire accordance
with theimanufacturers' names, it is absolutely necessary to know the name of the manufacturer before a particular
diagram can be found.
In i the supplements are included diagrams for which we have received requests. Wherever the diagrams that have
beep requested are not included in one set of supplements, th ey will appear in the first set published after we receive
thei, Many diagrams of obsolete sets are difficult to obtain, but we are using every possible effort to procure them.
We wish to express our thanks to the many subscriber s who have taken such extreme interest in the MANUAL,
anesfcial1Y to_those who have voluntarily submitted diagrams for publication in the supplements.- THE PUBLISHERS :
W4érTAGE OF RECEIVERS _ 76N
PHONO - RADIO INSTALLATION 76M
R.41/11 A. COLOR CODE 76M
MgTER MULTIPLIERS _ 76P
• A
A. C. DAYTON CO.
XL- 20; XL- 25; XL- 30 ____ 77
X,L-61; AC- 66 ___________ 78
AC- 63; AC- 65 79
XL- 5; Navigator, Navigator
Power P. 80
XL- 10; XL- 70 80A
XL-
60; XL- 50A. C. 80E
ACME ELECTRIC CO.
Model S.G. 88; A.C.-7 81
ALL AMERICAN MOHAWK CORP.
6 and 8 tube A.C. " W" Power
Pack 82
Lyric
models 60, 61, 62, 65 and
66 82
Lyric models 80, 83, 84, 85, 86,
88 82
70, 73 and 75; No. 90 chassis,
60 cycle 83
No. 90 chassis, 25 cycle; No. 96
chassis, 60 cycle 84
Mohawk one dial battery and
A.C. 226-227 85
Model D. Lyric Receivers 84A
*Model 44; Model H 84B
ip All American Lyric B-94 358C
áLLIED RADIO CO.
111(Same as Columbia Radio Co.)
AMERICAN BOSCH MAGNETO
CORP.
16 Amborola; 27 Amborada; 46
The Little Six; 57 and 87 86
Cruiser, Royal Cruiser and Im-
perial Cruiser model 35 bat-
tery sets 87
Models 66, 76, and 76L the
Cruiser; Models 66AC, 96,
116, 136 fur A.C.; Model 107
for A.C.; Mode's 126, 146,
166,
176, 46A.C. 88
Model 96 D. C. 110 V. Cruiser;
Model 156 Cruiser; Model 28;
Model 825 Super Dynamic
Power Pack 89
Models 48 and 49; Type BAN
edition 2 Nobattery; Type
BAN edition 3 and 4 Nobat-
tery; Types BAN edition 5
and 6 Nobattery 90
Model 54 D.C. receiver; Bosch
• Motor Car receiver 91
Model 58, 59 90A
Model 61, 62 _ 90B
• Model 60 Volume Control Re-
ceiver 90C
Model 5 90D
Model 60 and 61 ( Automatic
Volume Control) 90E
Model 62-D C.
Model 63-D C.
AMERICAN TRANSFORMER CO.
PF 250 Power Amplifier 3
ABC ni Power Box
2- AP amplifier and 21-D Hi
Power box 3
Amertran Concert-Hall Ampli-
fier type 25A; Approved
Audio Circuits 3
Plate Supply Transformer
Connections
AMPERITE Line Voltage Con-
trols for Standard Receivers
AMRAD CORPORATION
Neutrodyne A.C.-5; Model D.C.-
6; Model A.C.-6 Concerto
Nocturne
Model D.C.-7; Model A.C.-7
Model 80, 82, and 83; No. 7100;
No. S-522
3500-2; 2500-1; S-733; 7191
power unit; No. 3590
Amrad model 81 ( Bel Canto
Series) 96
APEX RADIO CO.
See U S. Radio and Television Co.
ARGUS RADIO CORP.
B-195; B-125 326
ATWATER KENT MANUFACTUR-
ING CO.
Model 10; Model 10B; Model 20
compact; Model 12; Model
19; Model 20 97
Model 21 dry cell; Model 32;
Model 36 with condenser vol-
ume control; Model 36 with
resistance volume control 98
Models 30, 33, 35, 48 and 49 99
Model 37; Model 38; and power
unit 100
Models 40, 42 and 52; Model 44;
and power unit 101
Model 41; Model 43 102
Model 50; 2nd. type power unit
for
Model 41; 3rd. type power
unit for Model 41; 2nd. type
power unit for Model 44 103
Model 55 and 55C 104
3rd. type Model 60-C 328
AUDIOLA RADIO CO.
Series 31 104A
Superheterodyne receiver 104B
AUTOMATIC RADIO AND MFG. CO.
"Tom Thumb" Portable 340
AUTOMOBILE RADIO CORP
TR-106; N R-109 75
• 1111111:111::11113 111111111111811111MI I L7•7" . ":"
BALKITE PRODUCTS COMPANY.
Model C; Model F 105
Models A-3; A-5 and A-7 362
(A & B Eliminators)
Balkite BX; Combination KX;
AB6-135 Form A; AB6-135 iii
Form B 104A
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90F B-180 Form B; B-185; BY; BW
90G or B Model D; B-11 ____ 104B
Socket " A" supply _______ 23
34 6-180 Form A 26
26 BREMER-TULLY MFG. CO.
B- T Counterphase 6; Counter-
42 phase 8; 6-40 power converter 106
6-40 circuit diagram; 8-20A ______ 107
7-70 and 7-71 108
34A ( Also see Brunswick)
BROWNING- DRAKE CORP.
334B Model 34, 36 and 38 ______ 350
MB- 30 108A
761 Model 69; Models 70 & 71 108B
BRUNSWICK BALKE COLLENDER
CO.
Models 14, 21 and 31 S.P.U. _ 109
92 Model 31 combination radio
93 and Panatrope 110
RPA-1; RPA-4 265
94 Models 3 and 10 267
BRUNSWICK RADIO CORP.
95 Bremer- Tully Models 81 & 82 __ 110A
Bremer- Tully Models S81 &
S82-25 cy; Brunswick S14
& S21; Brunswick Panatrope
S31
Bremer- Tully S81 & S82-60
cy; Brunswick S-14 & S21-
60 cy. •
Model 5NO ( SPU X-900, Chas-
sis X-1101
Panatrope
3NC8 ( Chassis X-
1103, SPU X-901)
Model 3KR8 ( SPU X-355, Chas-
sis X-822)
SPU X-341 ( used with 5KR,
5KRO & 3KRO), SPU X-341
& dynamic spkr. ( used with
3KR6 & 5KR6
Chassis X-801 ( used with 5KR,
5KRO 2KRO & 5KR6);
& dynamic spkr. ( used with
panatrope combinations and
3KRO & 3KR6)
Chassis X-1104 ( used with
panatrope combinations and
3NW8); SPU X-902 ( used
with
3NW8)
110B
110C
110D
110E
110F
110G
110H
110I
Models 15 & 22; Model R-1 ___ 110J
Model B-15 " Uni - Selector" _____ 110K
Model D.C.-15 110L
BUCKINGHAM RADIO CORP.
Model 80 348
BUSH AND LANE PIANO CO.
No. 10 DeLuxe; No. 12 S.G 111
CANADIAN MARCONI CO.
Type XIV D.C. 360
Tuner Unit Types XV. XVI,
XVII, XVIII A.C.; Power
Unit XVI _ _ _ 361
Model 20 A.C. Chassis 362
Model 20 A.C. Power Unit 363

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FFIC IAL RADIO SERVICE MANUAL
5
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Model 21 A.C. Chassis 364
Model 21 A.C. Power Unit 365
Model 22 A.C. Chassis 366
Model 22 A.C. Power Unit 367
Model 23 A.C. Chassis 368
Model 23 A.C. Power Unit 369
Model 19 D.C. 370
Model 28-29 373
Model 70 374
Model 80, 60 and 25 cycle ____ 375
Model 89 376
Model 90 377
Model 99 378
Model 110 379
Model 120 380
CANADIAN WESTINGHOUSE CO
LTD.
Model 55, W55A, W57, W60,
W58 371
6- Tube A.C. Chassis 1928 model'
and 200B loud speaker; No.
E 18 SPU 372
CAPEH ART CORP.
rl See Webster Elec. Co. Page .._ 350
CLEARTONE RADIO CORP.
Goldcrest Model 60; Model 80 112
Clearodyne Model 70; Clear
El tone Series 100 113
Model 110 compact; Model 112 114
COLONIAL RADIO CORP.
Model 31 A.C. 115
31 and 32 D.C. 116
32 A.C. 117
33 & 34 A.C. Remote Control 330
Model 33 D.C.; Model 16 116B
COLUMBIA PHONOGRAPH CO.
(see Kolster)
6 tube A.C. set; 7 tube A.C.
set 118
Columbia C-5 and Kolster K-24;
C-5 Substitute 119
Models 930-300; Model 931 120
Model 902; Type 950 radio and
phonograph combination 121
Models 900 - 801; Model 961 122
Power Pack for model 980; 6
tube D.C. set C6- C7 123
Type 980 radio and phonograph
combination 124
COLUMBIA RADIO CO.
Screen Grid - 8 125
Screen Grid 8 receiver 118B
CONTINENTAL RADIO CORP.
Models Ten 29-A and B with
171-L Power Unit; Model 9 126
Slagle 29-C; Slagle 29-A & B 127
Ten 29-D and C with 250-L
power unit 128
All Models 129
CROSLEY RADIO CORP.
AC- 7 and AC- 7C 130
Model 3B and 3C; Trirdyn 3R3;
5-38; Type V; Model 51;
2- stage A.F. amplifier for
type V; Model XI and XL . 131
Model 4-29; Models 30S, 31S,
33S,
34S; Models 40S, 41S,
42S, 82S 132
Models 40S, 41S, 42S, 82S, ar-
ranged for M type speaker;
Model 401; Model 608 133
Models 60S, 61S, 62S, 63S;
Jewelbox 704-A ______ 134
Model 601 135
Jewelbox 704-B; Showbox 1 706 136
Jewelbox 704; Gembox, Gem-
chest 610-609 A.C.: 804 A.C. 137
Jewelbox 706; Models 20, 21,
22; Model RFL-90 138
Models 41-A & 42- AC; 6-20 and
6-85 139
Bandbox Jr. 401-A; 602 Band-
box; Buddy and Chum 140
Model 54 - New Buddy Midget 354
Wigit model 48 358A
Model 58; Model 77-1 138A
Model 91 138B
Model 55; Model 56 138C
Model 26; Model 59; Model 76 138D
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Model 120 Super - Sondo, Super -
Rondeau and Super- Admin-
istrator Receivers 138E
Model 77; Model 84; Super Bud-
dy Boy 138F
D
DAY- FAN ELECTRIC CO.
See General Motors Radio Corp.
DeFOREST-CROSLEY LTD.
DC- 5 compact; C-6 compact;
Conway and Hastings; War-
wick and Windsor 381
Balmoral and Berwick; Band-
box Jr.; A.B.C. Power unit _ 282
Barcarolle and Minute; Etude
and Symphony; Electric
Hastings 383
First Series Symphony; Elect-
Berwick; Second series Sym-
phony; Nocturne, A.C.; Con-
certo, Sonata and Opera 384
Types 400-420; 410 385
ARIA and Troubador models
Aria and Trobbador models
type 740; type 750
Type 800 Chassis; Type 810
Chassis
Type 810 Phonograph; Type
700
DeFOREST RADIO CO.
CS- 5; F-5; D- ri
DELCO RADIO CORP.
"Police" Short Wave Set
Delco Automotive Radio
E
EARL RADIO CORP.
See Chas. Freshman, Inc.
ELECTRICAL RESEARCH LABORA-
TORIES
Erla model 224 screen grid 142A
Erla model 225 142B
Model 271 Midget 142D
THOMAS A. EDISON, INC.
(Also see Splitdorf )
R-4, R-5 and C-4 141
R-1, R-2 and C-2 Chassis Jr.
and Je; Model C-1 chassis SC 142
RT-1, R-2 and C-2 chassis Jr.
and Cr ( 25 cycle) 143
Models R-6 & R-7 140B
Models R4, R5, D.C. 140D
ELECTRAD, INC.
Loftin- White amplifier 63
Type 250; and 250 Push- Pull 358B
EMERSON RADIO & PHONOGRAPH
CORP.
Model F 356
386
387
388
353
76A
184
F.A.D. ANDREA, INC.
FADA RESISTORS AND CONDEN-
SERS 76N
Fada 10, 11, 30 and 31 - 60
cy.; 10Z, 11Z, 30Z, 31Z - 25
cy.; 16, 17 and 32 - 60 cycle;
16Z and 32Z - 25 cycle 144
Fada 18 D.C.; Fada 22 battery 145
Fada 20 A.C. - 60 cycle; 20Z
A.C. - 25 cycle; 25 A.C. - 60
cycle; 25Z A.C. - 25 cycle _ 146
25 and 25Z with M-250 and
M- 250Z Electric Units; 35
A.C. - 60 cy; . 35Z A.C. - 25
cycle 147
Fada 40 A.C. 60 cycle using
P-250 Elec. Unit and 7-A
speaker; Fada 50, 70, 71
and 72 148
E-420 Electric Unit; E-180
Electric Unit; 192-A receiver,
192-S and 192- BS Units 149
"7" A.C.; 75 and 77 A.C. 60
cycle 150
Special model 265--A and Fada
"7" model 475..A 151
460-A receiver and R-60 unit;
R- 80-A unit, 480-A or SF
50/80A 152
"Special" A.C. receiver 265 UA
or CA and RP- 65 - UA or CA;
262 - UA or CA and RP- 62 - UA
or CA; 480-B and SF 50/80 B 1&7;
"ABC" 6 volt supply types
66-0 and 62-R; " ABC" 6 volt
supply types 86-V and 82-W;
Type J unit; Type " C" unit
used with " special" and 7 AC 154
Fada KA -6 Chassis fox models
42, 44, 46, 41, 47 154B
Fada 5- tube Neutrodyne; 160
neutrodyne ----------------------------- 154A
FEDERAL RADIO CORP.
Ortho-Sonic type D; Series
Filament type D; 155
Model K 156
Series Filament type F; Ortho-
Sonic type H 157
Series Filament type E; Type M 158
FEDERATED PURCHASER
Melorad Cathedral Tone 365
FREED-EISEMANN RADIO CORP.
Model NR- 6; Model NR- 7;
Model NR- 9 - 9A 159
Model 10; Model NR- 11; Model
NR 12 160
Model FE- 15; FE- 18; NR- 20;
NR- 60 161
Models 30, 40 and 48; Models
30N, 40N and 48N; Model 50 162
Model 130; Model NR- 215, NR-
400; English long and short
wave set 163
Model 457 Power Unit; Model
NR8ODC 164
Model 90S AC; Model NR- 95
AC; 470 165
Model NR- 85; Model 53; Model
800 166
CHAS. FREEMAN CO. INC.
Earl models 21 and 22; Earl
models 31 and 32 167
QD-16S; Model N 168
Model G; Model G power pack;
Model G with G60- S power
supply 169
Earl model 41; Freshman model
M with M- 60-S power supply 170
New and improved Masterpiece;
Equaphase; Model H-9 171
Combination K and K- 60-S;
QD-16S 172
Q-15 and Q-16; 2N and 2N- 60-S 173
21AC and 22AC; 3Q-15 and
3Q-16 174
Model 121; Model 21 D.C.; Earl
models 33, 31 and 24 DC 175
32 and 32 AC; 31- SAC and 32-
SAC and Earl 33- SAC; 41AC 176
G
GENERAL ELECTRIC CO.
H-31 266A
H-71 266B
H-51 266D
General Electric Models G.E.
Jr. No. S-22, G.E. Jr. No.
S- 22X and S-42 266G
Models H-31; H-51 and H-71 266H
GENERAL MOTORS RADIO CORP.
Day- Fan OEM- 11; OEM- 7;
OEM- 7 super selective;
5- tube 1925 model 177
Day- Fan Five " 5044" 178
Model 5055 358A
Day- Fan Five Twenty Seven
5- tube; Six - 6 tube; Seven
7- tube 179
Day- Fan 6-61 - 6- tube; 6B -
6- tube; 6 Junior 6- tube; 6AC
6- tube 180
5AC - 5- tube; Model 35 7- tube;
6AC Power Set; 6 Junior AC
Power Set; 110 Volt D.C.
6- tube; Motor Generator Set 181
32 volt D.C. set 6- tube; Motor
Generator and Filter; Power
Supply for 5- tube AC set;
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Power Supply for 6- tube - AC
set; B and C Power Supply;
a Power Supply for No.
5524 and No. 5625
8- tube Model 5077; 8- tube
Model 5080; 8- AC Power Set
General Motors Model " A"
chassis; Delco Automotive
Radio
sGILFILLAN BROS. INC.
Li A.C. Model 60; A.C. Model 100
GRAYBAR ELECTRIC CO.
Model 311 ______
M 700
770
ei Graybar No. 8 Midget
=1 E1 Graybar Models 700, 770, 900
L- El A. H. GREBE & CO.
e: R.F. Amplifier type HORN;
El " 13" Regenerative Receiver;
Stu, rt Wave type CR - 18;
Short Wave type CR -6
Synchrophase type MU- 1;
Broadcast Receiver
h Super Synchrophase ty d
Synchrophase 7- AC Synchrophase 7
1
Super Synchrophase A.C.-SK'-4 B & C Socket power type 671- B
Synchrophase type AH -1
1
E- GRIGSBY-GRUNOW CO.
Majestic Models 60-70-80; 7BP3
Power Unit; 7BP6 Power Unit
Models 90, 91 and 92; 9P 3 Pow -
er Unit; 9P6 Power Unit;
Model 70B chassis in 72 Set
Model 100; 90-B
Model 100-B; 180 and 181
7P6 and 7P3 Power Unit ( old
wiring) 7P6 and 7P 3 Power
Unit
8P6 and 8P3 Power Unit; P.U.
System in 130-A Super
Screen Grid chassis
Super Screen Grid chassis in
model 130-A; in Model 230-A
Majestic " B" eliminators
Majestic Models 50, 51 and 52
Supers
GULBRANSEN COMPANY
Model C 9- in- Line
Champion Junior
Model 724; 8- Tube
186
187
pe SK- 4;
188
189
188A
188B
190
191
192
193
194
195
196
26
192B
197
196G
196H
H
ifT , MI% iffle"Minnin If I 1
6 Tube Set 507 and 508; A.C.
7- tube set inductance tuned;
"A" chassis 510, 511, 514,
182 516 8- tubes 198
Power Unit K-50 for sets No.
183 524, 525, 527, 528; Chassis
"B" 515, 519, 521 199
623 and 526 with power unit
184 No. 245 200
Wave Master; RFL 7- tube Cas -
185 cade 201
Models 533, 534, 536, 536 200A
338
266A
266B
266D
266G
266H
HAMMARLUND MFG. CO.
HI- Q 30 A.C. 51
HI- Q 31 A.C. 356
HORN RADIO MFG. CO.
Model 15 458D
HOWARD RADIO CO.
Model SG- A 196A
1 Model 8 Green Diamond
diags.) 196B
p., Model SG- B Midget 196C
FA Model SG- C 196D
EI
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e. INSULINE CORP. OF AMERICA
A.C. Short Wave Set 340
(3
JACKSON BELL
Model 62 Midget ---------------------- 354
JENKINS & ADAIR, Inc.
Microphone Mixing Panel Type
3-B; Monitor Panel; Level
Indicator Panel 196E
Type " A" Amplifying Panel;
Type " D" amplifying panel._ 196F
JESSE FRENCH & SONS PIANO CO.
Junior Model " G" 355
KELLER FULLER MFG. CO. LTD.
Radiette Model 14F 355
Model FIFTY, Model SIXTY 328B
KELLOGG SWITCHBOARD AND
SUPPLY CO.
COLIN B. KENNEDY CORP.
Model 281; 110; 220 202
Model 6 type 420; Model 15
type 430 and 431 203
7 Cornet D.C.; Type 435; Model
20 type 440; Model 521 and
525 204
Model 10; Model 20 205
Kennedy Model 826B Combina-
tion 204A
Royal 80; Models 30 and 32 204B
KING MANUFACTURING CORP.
Model 101(1 Neutrodyne,; 25
Neutrodyne; 71 Neutrodyne;
30 T.R.F.; 61 T.R.F.; 62
T.R.F. 206
Model E and 80A; Model 80;
Model 81 207
Model F; Model 82 and power
pack 208
Model J; Model H 209
Model 97; Model 98; King Mon-
arch 210
Model G; Power pack wiring
King Royal, Imperial, and
Monarch 211
KNAPP " A" POWER UNIT 359
KOLSTER RADIO CORP.
Columbia type 930; Kolster 6K 212
Kolster 6- tube receiver; 7- tube
A.C. set ( Brandes) 213
Kolster 8A- B- C; 6H; 7A and 7B 214
K-44; K-43 215
K-45 216
Brandes B10; B15; B16 217
Tuning chassis for 7- tube sets
used in K-21, K-23, K-24 and
K-28; 4- tube chassis used in
K-20, K-22, K-25 and K-27;
Power supply and amplifier
unit in K-24 218
K-20, K-22, K-27 & K-37 218A
K-42; K-30 & K-32 218B
LAFAYETTE - See Gulbransen
and Wells Gardner.
C. R. LEUTZ, INC.
Trans- Oceanic; " Seven Seas"
console 338
LINCOLN RADIO CORP.
Model 31 357
Lincoln DC- 8 358C
MAJESTIC
(See Grigsby-Grunow Co.)
MASTER RADIO MFG. CO. LTD.
Master Model 424 355
McMILLAN RADIO CO.
Series 900; 8- AC Power Set 219
MILLS PHONOGRAPH CO.
Mills phonograph 218C
Phonograph diagrams with ex-
tra speakers 218D
MONTGOMERY WARD & CO.
5 tube S.G. battei y sets Nos.
1522 & 1562. ( Wells- Gard-
ner); 7- tube A.C. S.G. sets
Nos. 2822_ 2827, 2895, 2897.
(U.S. Rad. & Television Co.)
8 tube A.C. S.G. sets Nos. 2955
& 2957. ( Wells Gardner);
8 tube A.C. S.G, sets Nos.
3035, 3037, 3065, 3067. ( U.S.
Rad. & Television)
218M
218N
N
NATHANIEL BALDWIN CO.
Screen Grid Model 80 324
NATIONAL CARBON CO. INC.
Eveready models, 1, 2 and 3;
series 50 220
Eveready series 30, 30-C and
40 221
NATIONAL TRANSFORMER CO.
Midget Six 358E
Screen Grid 8 358F
PEERLESS
(See United Reproducers Corp.)
PHILA. STORAGE BATTERY CO.
PHILCO RESISTOR AND
CONDENSER DATA 76-0
OSCILLATOR CIRCUIT FOR
175 OR 260 K.C. 76-0
Philco Model 40; Model 41 222
Model 65; Model 76 223
Models 77 & 77A; 86 & 82 224
Model 87 225
96 & 96-A; 296 & 296-A 226
Models 511, 521, 512, 513, 514,
515,
531, 551, 571; Model 95 227
"A" & " B" Eliminators " DB"
& " B" part of " DAB" socket
powers; 180 volt B and - 14t
part of 180V. AB; Types B-
603 & B-253; AB- 663, AB-,
623, AB- 463, AB- 423 226A
Philco Set Model 65; " Baby
Grand" 20 & 20A 226B
Socket " A" supply 23
AB- 656 & AB- 652 25
Models 92, 95, 95e, 96A, 96E,
296, 296A, 296E 226C
Models 111 and 111-A 226D
Models 220 and 220-A 226E
Models 211 and 211-A 226F
Philco Model 30 358C
Models 56 and 46-E 226G
Models 111 and 111-A 22611
Models 112 and 112-A 2261
Models 112 and 112-A Radio-
Phonograph; Models 270 and
270-A 226J
Models 70 and 70-A 226K
Models 90 and 90-A 226L
PIERCE AIRO, INC.
AC- 24-45 352
De WALD Model A.C. 524 355
Pierce Airo DeWald D.C.-632 358C
PILOT RADIO AND TUBE CORP.
PE6; K-113 power amplifier;
Pilotone Electric 6- tube;
Super Wasp 228
Pilot Automotive Radio; Grimes
110- volt D.C. New Yorker;
Twin S.G.8 229
K-106; K-108; S.G.-105 230
A.C. Super Wasp 73
Pilot Midget 354
Pilot Universal Super Wasp 358D
PRIESS RADIO CO.
Models R and C nine- in- line
supers 357
R C A-VIC'eOR CO. ( Victor Div.)
Alhambra I ( 7-1); Electrola
Cromwell, Borgia II 231
Electrola 9-25; Electrola 9-40 232
Electrola Hyperion; Alhambra
II and Florenza; Radiola 25
Catacomb far Alhambra II
(7-2) and Florenza ( 9-1) 233
Models 7-3, 7-30 and R-20;
Electrola Radiola 7-26; Vic-
tor Radiola 16 234
10-70; AP- 777C; Catacomb,
Radiola 28; 12-15; 12-25 235
AP- 962 and AP- 997; Victor
Radiola 18; AP- 974-A; 951-A
and 997-A; 12-15 236
Victor Radiola 17 ( in model
7-25); 9-15 _ 237
i
ti
king;
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OFFICIAL RADIO SERVICE MANUAL
6A
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AP- 736; AP- 997C; Model 9-55 238
Electrola Radiola 9-54; Auto-
matic Electrola 10-69; and
" power wiring 239
R-32, R-42, RE- 45, RE- 75,
10-69; 10-51 240
AP- 947 ( RPA-1A); AP- 952 and
AP- 997 ( RPA-5 and RPA-5
special); Electrola Radiola
9-18 241
7-26; Radiola 9-54; Electrola
10-'70 242
Victor Radio R-14 242A
Victor Radio R-15 266D
Victor Micro- Synchronous Mod-
els R-35, R-39, RE- 57 266E
Radiola Division
RCA Centralized Radio System 49
Radiola Senior; Radiola RS;
Radiola III; Radiola AC Am-
plifier; AR; Balanced Am-
plifier, Radiola VII 243
Radiola
V; VI; II; IV 244
Radiola IIIA; IX; Superhetero-
dyne; Radiola Grand 245
Radiola 16; AP- 937; VIIB 246
Radiola 20; Radiola 30 247
67 248
Super VIII ( AR- 810), " semi-
portable" ( AR- 812), 24 and
26 249
Radiola 25 250
46 D.C.; 33 251
Radiola 17; Radiola 60; Radio-
la 18 252
33 D.C. _____ _ 253
28 ( battery operated); loud-
speaker 104 RPA unit 254
47 255
Radiola 64; AP- 951; AP- 935 256
Radiola 41; Sterling SPU; Re-
ceptor SPU; Loudspeaker 105 257
Radiola 67 258
Radiola 47 259
Radiola 50; 51 260
41 D.C.; 51 D.C. 261
18 D.C.; 62 262
Radiola 66 263
30-A 25 cy; 21 & 22; 30A
RPA Unit 264
Brunswick RPA-4 with Pana -
trope and panel connection
8- tube panel); RP1A with
Panatrope and panel conn. 265
Radiola 44 chassis; 32 RPA unit 266
Radiola 44; Mod:els 3 & 10
(Brunswick) 267
RCA R-80 266A
RCA 86 266B
Audio frequency circuits ( 86) 266C
RCA 82 266D
Radiola 28 A.C.; RCA Loud-
speaker 106 _ 266F
Radiola 48, same as Victor 15 266D
Radiola 42 242A
Radiola 24 and 104 power
speaker 242B
RCA- Victor Radiola " Super-
ette" Model R7 _ 266G
Models 80, 82, 8r3 266H
RADIO SERVICE OSCILLATOR 76J
REMLER RADIO CORP.
45 KC Superheierodyne 340
Came,o Model 14 354
ROBERTSON-DAVIS CO.
Melo-Heald 11- tube Superhe-
terodyne 357
SEARS, ROEBUCK & CO.
Silvertone Models F, G, H, J,
same as King . 207, 208, 209
Silvertone F, FF, G, H, J 200B
SILVER- MARSHALL, INC.
Models 30 ( chassis), 60 Lowboy,
95 Highway and 75 Concert
Grand 268
720 A.C. 59
S.M. 690 Public Address System 340
MtvisMerlerrIMMUMMIIMITIMMTUTM1127 _ • MCIMMT11111111.11nrgli
-j
33-A power supply ( 25 & 60
cy.); 1929 9- tube S.G. sup-
heterodyne 268A
heterodyne -
Model 34-A; Model- 35-A 268B
Silver Marshall - Super with
Model 36A Chassis and 32A
Power Pack 268C
722 Band Selector 7; SM-712
Tuner; 724 A.C. Receiver ____ 268D
Model 714 Superheterodyne;
Models 37, 38 and 39----- - -----268E
SONORA PHONOGRAPH CO. INC.
Modél 2RP-25 269
3R and 4R ____ _ _______ 270
3 RP . 271
5R 272
7P 273
B-31 ( 25 cycle); Phonograph
automatic stop 274
SPARKS-WITHINGTON CO.
Sparton Model 39; 89A 275
49; 9-30 ____ _ 276
931 and 301 D.C. 277
6-26, 6-16; A.C. 62-63 & A.C. 7 278
A.C.-89; DeLuxe 109 279
Sparks Ensemble 280
5-26, 5-15; Model 110 281
Sparton 931 A.C. ______ 280B
Equasonne Model 589 280C
Sparton Model 301 A.C. 280D
SPIEGEL, MAY, STERN CO.
"Melrose"- same as Apex 41 306
SPLITDORF ELECTRIC MPG. CO.
R-200; PAD- 4; ABBEY ( with
volume control 322
ABBEY Model 171 324
Splitdorf Model M5, R.V.-695 322A
Model M-6; R-100 322B
STANDARD RADIO CORP.
A.C. Model 29 342
STEINITE RADIO COMPANY
50-A & 102-A 282
991, 992, 993; 261 & 262 283
Model 40 power pack 28
Power Pack Models 40C - 60
- 120C 282A
No. 10 Screen Grid Chassis in
Models 70, 80, 95 282B
STERLING MANUFACTURING CO.
No. 4; No. 4 chassis, power
unit, and speaker 284
No. 4 speaker; No. 4 power
unit; No. 3A chassis 284
Sterling Midget; Model " B" 268F
STEWART-WARNER CORP.
305-315-320; 300; 310-325; 330;
335-340; 345-350-355-360;
385-390 286
500-520-525; 700-705-710; 530-
535;
715-720 287
Power unit models 530-535-715-
720; Power units models 801-
801A- 811-811A - series B;
Model 806 series B 288
Model 750; 950 series battery
S.G. 289
950 D.C.; 950 25 & 60 cycle A.C. 290
Models R- 100A, AF, B, BF, E,
290A
and ? F
Series 900 291
STORY AND CLARK RADIO CORP.
Model 36 tuner unit; Model 36
power pack; Model 42 and
51 tuner unit __ 290B
STROMBERG-CARLSON MFG. CO.
Circuit D-968; 523 & 524; 635
& 636 292
641 & 642 293
638 D.C.; 652 & 654 294
846 295
403 AA audio power unit, 404
RA and 404 RAC SPU; 403
B audio pcwer unit 296
635 D.C.; 601 & ( 112 battery _ _ 297
No. 1-B; 403 & 403A power
pack; No. 10 and 11 receivers 298
No. 704-B; 501 & 502 299
No. 734-B; 633 & 634 300
No. 14 - phonograph diagram;
No. 638 A & B _____ 300A
No. 12 & No. 14 300E
TELEPHONE MAINTENANCE CO.
Teltnaco P-1 ----------------------358
TEMPLE CORPORATION
8-60, 8-80, 8-90 301
8-61, 8-81, 8-91 _ _ _ _ 302
TRANSFORMER CORP. biTAMER-
ICA
Clarion AC- 53, AC- 55, 25, 51-
25, 53 - 25, 55 328
Clarion Jr. Model 60 355
Clarion Series 90, - Models
AC- 90, AC- 91, AC- 91A, 26-90
and 25-91 328A
TRAV-LER MFG. CO.
Model 6 & 7; DC & AC power
packs ________ _______
UNITED AIR CLEANER CO.
Sentinel 660 9- tube;
Sentinel 666-C 9-tutie chassis
for phonograph combination 346
Model 444 and 440 7- tube SA. 348
Sentinel 104, for models 11, 12,
15 and 16 346A
Sentinel 8 and 9; 31-33 and
power pack 346B
U. S. RADIO & TELEVISION CO.
(See Montgomery Ward & Co.)
Model 80; Apex 48 - 60 cycle,
48A - 25 cycle 305
Apex 41 - 60 cycle, 43 - 25 cy-
cle; 42 - 60 cycle, 44 - 25 cy-
cle 306
Apex 46 & 47 - 60 cycle, 46A
& 47A, 25 cycle; Model 30
Automotive 307
UNITED REPRODUCERS CORP.
(Peerless) Courier " 65" chas-
sis; Series K-70 303
Series 20 Electrostatic
(Kylectron) 304
WEBSTER ELECTRIC CO.
2- Stage PO. Amplifier; Code
6005; 6025- JD Amplifier. 350A
3- Stage PO. Amplifier; 6030 - JE
& B-37-50 Amplifier 350B
WELLS GARDNER CO.
(See Montgomery Ward & Co.)
Wells Gardner Co. Nine- in- Line
same as Gulbransen - see
page 197
WESTINGHOUSE ELECTRIC &
MFG. CO.
WR5 266A
WR7 266B
WR6 _ 266D
Westinghouse No. IVR-10 266G
Westinghouse models WR-8 &
WR-8R 26611
WILLARD STORAGE BATTERY CO.
"B" power units No. 3095;
4095; 3310 & 4310: " A" pow-
er units No. 3280; 3262;
3290 & 3390 304A
"A- B" units No. 3301; 6301;
4301 304B
WURLITZER
(See All American Mohawk Crop.)
ZENITH RADIO CORP.
11E & 14E; 11-12-14 308
17- series filament; 4R; ZEIO
power supply; ZE-5 power
supply for model 17 309
33X & 362X 6- tube electric;
34P & 342P 6- tube electric 310
Model 27; 31 & 32 311
ZE 4 " 13" power supply; ZE3
"A" power supply; models
332
4
P
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nilitIMIL1111M1111111111111111111111U111111111111illuutiii111111111WIIMMIMIIIIMMIMIIIMIMillliiIMIIII

6B
OFFICIAL RADIO SERVICE MANUAL
•
..ellittl!litItriin:rrjr1111?.
33-34-35; 35A- 342-352-352A-
362 312
35P-35AP-352P-352AP; 37A 313
ZE14 power supply; ZEll pow-
er supply; ZE13 power sup-
ply; ZE15 power supply 314
39- 39A- 392-392A; 40A 315
35PX-35APX-352PX-352APX-
37A; 333-363A 6- tube D.0
set ___, 316
ZE17 power supply; ZE18 pow-
er supply; Models 60, 61, 62,
602, 612 & 622 without loop;
64, 67, 642 & 672 with loop 317
Acme— Acme Electric Co.
Airline— Montgomery, Ward & Co.
Amertran—American Transformer Co.
Amrad—Amrad Corp.
Apex— United States Radio & Televis-
ion Co.
Arcadia— Wells Gardner Co.
Argus— Argus Radio Corp.
Atchison— Atchison Radio Mfg. Co.
Atwater Kent— Atwater Kent Mfg. Co.
Audiola—Audiola Radio Co.
Aztec— Stein, Fred W.
Baldwin— Nathaniel Baldwin Co.
Balkite—National Transformer Mfg.
Co.
(Balkite Sales Division)
Bosch— American Bosch Magneto Corp.
Brandes—Kolster Radio Corp.
Bremer Tully— Bremer Tully Mfg. Co.
(Now Brunswick Radio Co.)
Browning Drake— Browning Drake
Corp.
Brunswick— Brunswick Balke Collender
Co.
(Brunswick Radio Co.)
Buckingham— Buckingham Radio Co.
Bush & Lane— Bush & Lane Piano Co.
Capehart Orchestrope—Capehart Corp.
Webster Elec. Co.
Cardinal-- Long Radio Co.
Cardon - Sparks — Cardon - Sparks Phono -
craft Corp.
Carteret— Carteret Radio Lab.
Clarion— Transformer Corp. of Amer-
ica.
Cleartone—Cleartone Radio Corp. Div.
of
Cincinnati Time Recorder.
Colonial— Colonial Radio Corp.
Columbia— Columbia Phonograph Co.
(Columbia Radio Co.)
Counterphase—Bremer Tully Mfg. Co.
Courier— United Reproducers Corp.
(Now Gray Electric Co.)
Crosley—Crosley Radio Co.
Day Fan— General Motors Radio Corp.
DeForest—DeForest Radio Co.
Delco— Delco Radio Corp.
Earl— Freed Radio Corp.
Edison— Edison, Thomas A., Inc.
Electrad—Electrad, Inc.
:ISMIMIUMITTIMITITMMIT I MTM LU irtnirjetIM MII IM MI TITITI M M I= MMTIMIT I= M iti ll .11111111,9
15 & 16; 15E, 15EP, 16E, 16EP;
42 & 422 318
ZE16 power supply; ZE12 pow-
er supply; Models 41 & 412 319
Models 52 & 53; 54 320
Model 70 ( 71, 72, 73 & 77 -
60
cycle; 712, 722, 732 & 772
- 26 cycle) 321
Model 80 320A
Model 80 Power Supply 320B
MISCELLANEOUS CIRCUITS
Aerodyne Six 344
Ambassador Four 344
Magnavox TRF-5 and TRF-50 344
TRADE NAME INDEX
Emerson— Emerson Radio & Phono-
graph Corp.
Erla—Electrical Research Laboratories.
Eveready—National Carbon Co.
Fada — Andrea, F. A. D., Inc.
Federal— Federal Radio Corp.
Fin- All— Find- All Radio Co.
Freed Eisemann—Freed Radio Co.
Freshman— Freed Radio Co.
General Motors— General Motors Radio
Corp.
Gilbert— Gilbert, R. W.
Gilfillan—Gilfillan Bros. Inc.
Graybar—Graybar Electric Co.
GI ebe—Grebe Radio Co., A. H.
Gulbransen—Gulbrarisen Co.
Hammarlund—Hammarlund Mfg. Co.
Howard — Howard Radio Co.
Hyatt— Hyatt Electrical Corp.
ICA—Insuliné Corp. of America.
Jackson Bell— Jackson Research Lab.
Jesse French— Jesse French & Sons
Piano Co.
Kellogg— Kellogg Swbd. & Supply Co.
Kemper— Kemper Radio Corp., Ltd.
Kennedy— Kennedy Corp., Colin B.
King— King Mfg. Corp.
Kolster—Kolster Radio Corp.
Kylectron—United Reproducers Corp.
(Now Gray Electric Co.)
Leutz—Leutz, Inc., C. R.
Lincoln— Lincoln Radio Corp.
Loftin White—( See Electrad)
Lyric— All American Mohawk Corp.
Majestic— Grigsby Grunow Co.
Marti— Marti Radio Corp.
Master— Master Radio Mfg. Co. Ltd.
McMillan— McMillan Radio Co.
Melo Heald— Robertson Davis Co.
Melorad Cathedral— Federated Pur-
chasers.
Minera -- Minerva Radio Co.
National— National Transformer Mfg.
Co.
Navigator— A. C. Dayton Co.
Orpheus— Roth- Downs Mfg. Co.
Patterson— Patterson Radio Corp.
Peerless— United Reproducers CDrp..
(Now Gray Electric Co.)
Continental Wireless and Sup-
ply Co. " Voice of the Road"
Automotive 344
Magnaformer 9-8 Superhetero-
dyne 352
Blair TRF 6- tube receiver 342
St. James Superheterodyne _ 336
Madison Moore Superhetero-
dyne 336
Victoreen Superheterodyne 336
Garod Neutrodyne 358
Grimes 4- DL Inverse Duplex 358
Zaney-Gill Receiver 358A
Mission Bell . and Royale 358A
Philco—Philadelphia Storage Battery
Co.
Pierce Airo—Pierce Airo, Inc.
Pilot— Pilot Radio & Tube Corp.
Pioneer— Pioneer Radio Corp.
Priess—Priess Radio Co.
Premier— Premier Electric Co.
Radiette—Keller Fuller Mfg. Co. Ltd.
Radiola—R. C. A. Victor Co.
Radiotrope—U. S. Radio & Television
Co.
Ranger— Brown & Manhart
Republic— Republic Radio Co.
Sentinel— United Air Cleaner Co.
Seven- Seas— Levitz, Inc., C. R.
Silver— Silver Marshall, Inc.
Silvertone—Sears, Roebuck & Co.
Simplex— Simplex Radio Co.
Sonora—Sonorà Phonograph Co. Inc.
Sparton— Sparks Withington Co.
Splitdorf—Edison, Thomas A., Inc.
Star Raider— Continental Radio Co.
Steinite—Steinite Radio Co.
Sterling— Sterling Mfg. Co.
Stewart Warner— Stewart Warner
Corp.
Story & Clark— Story & Clark Radio
Corp.
Stromberg Carlson—Stromberg Carl-
son Tele. Mfg. Co.
Telmaco—Telephone Maintenance Co.
Temrle—Temple Corp.
Tom Thumb— Automatic Radio & Mfg.
Co.
Transitone—Automooile Radio Corp.
Trav-Ler—Trav-Ler Mfg. Co.
U. S. Radio— U. S. Radio & Television
Corp.
Vagabond — Vaga Radio Corp.
Victor— R. C. A. Victor Co.
Victoreen— Victoreen Radio Co.
Webster— Webster Electric Co.
Westinghouse— Westinghouse Elec. &
Mfg. Co.
Willard— Willard Storage Battery Co.
Work- Rite— Work- Rite Radio Corp.
Wurlitzer—(See All American Mo-
hawk Corp.)
Zenith— Zenith Radio Corp.
Fe '
fS'
E
kttit .. it

OFFICIAL RADIO SERVICE MANUAL
3
•
•
e
Potter Condenser Service
Replacement By- Pass and Filter Blocks
For All Receivers
Unequalled Hi- Speed Shipment of
Standard Condenser Units
Potter Condenser service provides immediate shipment
of condenser units for standard sets.
Use the Potter Wall Chart of Replacement Condensers
when you need by-pass or filter condensers. Just look up
the make and model, and order by number the unit you
want.
Replace defective units with Potter Condensers, made to
the set manufacturer's specifications. There's more profit
and you can depend on the quality
Potter Rug Aerial
The convenient and sensitive
aerial for all sets. Makes the out-
side antenna unnecessary. No in-
stallation; just connect to receiver.
The Potter Co.
Sales Offices
443 So. San Pedro St.,
Los Angeles, Calif.
905 Mission St.,
San Francisco, Calif.
1641 Stout St.,
Denver, Colo.
549 W. Washington Blvd.,
Chicago, Ill.
1202 Maryland Ave.,
Baltimore, Md.
261 Franklin St.,
Boston. Mass.
Special Units Duplicated 48 Hours
After Receipt of Order
Any condenser unit can be duplicated in less than 48
hours. Send the old block in and get back from Potter
an exact duplicate. Our container plant makes special
cases for any job.
If it's a condenser you need, Potter has it or will maim
it to your exact specifications on short notice.
Order from your jobber, any Potter sales office, or from
the factory in North Chicago, Ill.
Send For This Free Chart
1.1.••••
Mkro.
Potter Condenser
Replacement Chart
Time Peter Ce. IISeek Cheeses,
A NATIONAL , , RGANI A I ION AT 101 R
Met - F. E1.1-. - /FM.:_ - _IE-:,71 1 2i=
in 51
Ia«
url • I•1 ad• die * ere 14.•••••• al e emall.e."Ferthevimen. elg.Iese . 0 In eigl.,1.•
mum bum.. . cm» r....10.1 •••... ■••
mrealà».••••1.• en* m1 a
•re
Ê E
e - • . g 7 g = E 117:- . == . ... .-,.
r .. E â f=-!. , I . e .. F. , i g . 17 , ... 7
- E. .-
r . - E.
r— xer
• : r.
7 _ _ 7
F- 74
à BE•1
.
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- qse-4
A National Organization
Ownlffl lignme feu Illmemer % BIM
r 'a e*
• z • - - - ,
POTTER Nos. 113-300
elominator etops interfer-
ence from entering set
through the power supply.
Cartridge
Units
No. 1
Wax
Potter cartridge condenser units
and No. 1 wax should be carried
by every serviceman_ Invaluable
for quick repairs.
North Chicago, Ili.
Sales Offices
202 Baker Bldg.,
Minneapolis, Minn.
191 Starin Ave.,
Buffalo, N. Y.
710 Union Central Bldg.,
Cincinnati, Ohio.
1400 W. 25th St.,
Cleveland, Ohio.
305 Seventh Ave_
Pittsburgh, Pa.
1913 Pacific Ave.,
Dallas, Texas.
276 Smith St.,
Winnipeg, Manitoba, Can.

4
OFFICIAL RADIO SRRVICE MANUAL
nuniminruniriimmirm"7: liziL.a.: ; _ntnimmumilimummlumiirriumurirmiireimenrinerruirmiimetirmummumrninriaPutiunitiirrnruir ,, Termi:"%quimniinniumm:;:uvà
1
E
) 11
INDEX TO COMMERCIAL WIRING DIAGRAMS
W ITH the issuance of each set of supplements, a completely revised and up-to-date index is furnished. To use this
first remove all of the pages from the cover; throw away the old index pages and replace them with the new ones;
and then insert the supplement pages in their numerical and alphabetical order. Then replace the cover and the book
is complete.
Often, the trade name of a set is known by the user of this book but the name of the manufacturer not known.
In searching for diagrams, if the particular diagram you desire cannot be found, be sure to look through the Mis-
cellaneous section at the end of this index. If it is not listed there look through the Trade Name Index; this gives the name
of the manufacturer for each trade name. Since all diagram s are listed in the index in alphabetical order in accordance
with the manufacturers' names, it is absolutely necessary to know the name of the manufacturer before a particular
diagram can be found.
In the supplements are included diagrams for which we have received requests. Wherever the diagrams that have
been requested are not included in one set of supplements, they will appear in the first set published after we receive
them. Many diagrams of obsolete sets are difficult to obtain, but we are using every possible effort to procure them.
We wish to express our thanks to the many subscribers who have taken such extreme interest in the MANUAL,
and especially to those who have voluntarily submitted diagrams for publication in the supplements.- THE PUBLISHERS.
A
WATTAGE OF RECEIVERS 76N
PHONO - RADIO INSTALLATION 76M
R. M. A. COLOR CODE 76M
A. C. DAYTON CO.
XL- 20; XL- 25; XL- 30 . _ . ..... 77
XL- 61; AC- 66 . 78
AC- 63; AC- 65 ... 79
XL- 5; Navigator, Navigator
Power P. 80
XL- 10; XL- 70 80A
XL- 60; XL- 50A. C. . _ 80B
ACME ELECTRIC CO.
Model S.G. 88; A.C.-7 _ _ 81
ALL AMERICAN MOHAWK CORP.
1 6 and 8 tube A.C. " W" Power
9 Pack ---------------------------- 82
Lyric models 60, 61, 62, 65 and
I
Lyric models 80, 83, 84, 85, 86,
66
88 82
70, 73 and 75; No. 90 cha ss is,
82
M
60 cycle 83
No. 90 chassis, 25 cycle; No. 96
E
=
chassis, 60 cycle 84
E. Mohawk one dial battery and
a A.C. 226-227 85
E Model D. Lyric Receivers 84A
Ei Model 44; Model H 84B
All American Lyric B-94 358C
ALLIED RADIO CO.
(Same as Columbia Radio Co.)
AMERICAN BOSCH MAGNETO
CORP.
16 Amborola; 27 Amborada; 46
The Little Six; 57 and 87 _ 86
Cruiser, Royal Cruiser and Im-
perial Ciuiser model 35 bat-
tery sets _ 87
Models 66, 76, and 76L the
Cruiser; Models 66AC, 96,
116, 136 for A.C.; Model 107
for
A.C.; Modeis 126, 146,
166, 176, 46A.C. 88
Model 96 D. C. 110 V. Cruiser;
Model 156 Cruiser; Model 28;
Model 825 Super Dynamic
Power Pack 89
Models 48 and 49; Type BAN
edition 2 Nobattery; Type
BAN edition 3 and 4 Nobat-
D.
tery; Types BAN edition •and 5 6 Nobattery 90
E Model 54 D.C. receiver; Bosch
Motor Car receiver 91
Model 58, 59 90A
• Model 61, 62 90B
AMERICAN TRANSFORMER CO.
PF 250 Power Amplifier __ _ 334
ABC Hi Power Box 26
• 2- AP amplifier and 21-D Hi
Power box . 342
• Amertran Concert- Hall Ampli-
fier type 25A; Approved
5
E
E
Audio Circuits 334A
Plate Supply Transformer
Connections 334B
AMPER1TE Line Waage Con-
trols for Standard Receivers . 761
AMRAD CORPORATION
Neutrodyne A.C.-5; Model D.C.-
6; Model A.C.-6 Concerto
Nocturne 92
Model D.C.-7; Model A.C.-7 93
Model 80, 82, and 83; No. 7100;
No. S-522
3500-2; 2500-1; S-733; 7191
power unit; No. 3590 ------ 95
Amrad model 81 ( Bel Canto
Series) 96
APEX RADIO CO.
See U. S. Radio and Television Co.
ARGUS RADIO CORP.
B-195; B-125 -------------------- 26
ATWATER KENT MANUFACTUR-
ING CO.
Model 10; Model 10B; Model 20
compact; Model 12; Model
19; Model 20 ------- - ---- ---- --------- 97
Model 21 dry cell; Model 32;
Model 36 with condenser vol-
ume control; Model 36 with
resistance volume control 98
Models 30, 33, 35, 48 and 49 _ __ 99
Model 37; Model 38; and power
unit 100
Models 40, 42 and 52; Model 44;
and power unit 101
Model 41; Model 43 102
Model 50; 2nd. type power unit
for Model 41; 3rd. type power
unit for Model 41; 2nd. type
power unit for Model 44 103
Model 55 and 55C 104
3rd. type Model 60-C 328
AUDIOLA RADIO CO.
Series 31 104A
Superheterodyne receiver _ 104B
AUTOMATIC RADIO AND MFG. CO.
"Tom Thumb" Portable 340
AUTOMOBILE RADIO CORP.
TR-106; NR- 109 75
BALKITE PRODUCTS COMPANY.
Model C; Model F -------- - ---------- 105
Models A-3; A-5 and A-7 352
(A & B Eliminators)
Balkite EX; Combination KX;
AB6-135 Form A; AB6-135
Form B _ 104A
B-180 Form B; B-135; BY; BW
or B Model D; B-11 104B
Socket " A" supply 23
6-180 Form A 26
BREMER-TULLY MFG. CO.
B- T Counterphase 6; Counter-
phase 8; 6-40 power converter 106
6-40 circuit diagram; 8-20A 107
7-70 and 7-71 108
(Also see Brunswick)
BROWNING- DRAKE CORP.
Model 34, 36 and 38 350
MB- 30 .. 108A
Model 69; Models 70 & 71 _ 108B
BRUNSWICK BALKE COLLENDER
CO.
Models 14, 21 and 31 S.P.U. 109
Model 31 combination radio
and Panatrope 110
RPA-1; RPA-4 ___ 265
Models 3 and 10 267
BRUNSWICK RADIO CORP.
Bremer- Tully Models 81 & 82 110A
Bremer- Tully Models S81 &
S82-25 cy; Brunswick S14
& S21; Brunswick Panatrope
S31 110B
Bremer- Tully S81 & S82-60
cy; Brunswick S-14 & S21-
60 cy. 110C
Model
5NO ( SPU X-900, Chas-
sis X-1101 110D
Panatrope 3NC8 ( Chassis X-
1103, SPU X-901) 110E
Model 3KR8 ( SPU X-355, Chas-
sis X-822) 110F
SPU X-341 ( used with 5KR,
5KRO & 3KRO), SPU X-341
& dynamic spkr. ( used with
3KR6 & 5KR6 110G
Chassis X-801 ( used with 5KR,
5KRO 2KRO & 5KR6);
& dynamic spkr. ( used with
panatrope combinations and
3KRO & 3KR6) 110H
Chassis X-1104 ( used with
panatrope combinations and
3NW8); SPU X-902 ( used
with 3NW8) 1101
Models 15 & 22; Model R-1 110J
Model B-15 " Uni - Selector" _ _ 110K
Model D.C.-15 . 110L
BUCKINGHAM RADIO CORP.
Model 80 ... . 348
BUSH AND LANE PIANO CO.
No. 10 DeLuxe; No. 12 S.G 111
CANADIAN MARCONI CO.
Type XIV D.C. 360
Tuner Unit Types XV, XVI,
XVII, XVIII A.C.; Power
Unit XVI ------------------ 361
Model 20 A.C. Chassis 362
En'
s-
g.
1

OFFICIAL RADIO SERVICE MANUAL
5
RADIO MEN, ELECTRICIANS, TELE-
PHONE MEN OR MEN WITH SIMILAR
KNOWLEDGE, WRITE US ABOUT OUR
TRAINING PLAN - WE NOT ONLY
ARRANGE TRAINING BUT SPARETIME
WORK AS WELL.
PHOTO - ELECTRIC RESEARCH LAB-
ORATORY CORP.-A MILLION DOLLAR
CORPORATION - HAVE CONTRACTED
TO EXCLUSIVELY EMPLOY OUR MEM-
BERS TO OPERATE THEIR NEW
PHOTO- ELECTRIC ENGRAVER.
SERVICE MEN
WANTED EVERYWHERE
TO INSTALL and service all makes of sound repro-
' clueing systems, public address sy'stems, etc.
NATIONAL SOUND SERVICE BUREAU is an
organization of manufacturers of sound equipment,
users of sound equipment and hundreds of electro -
acoustical engineers located everywhere to install and
service this equipment.
If you are competent now, our organization needs you;
if not, we can arrange to have you trained. Write us
your present qualifications.
NATIONAL SOUND SERVICE BUREAU, Inc.
723 Seventh Avenue Dept. SM New York, N. Y.
MANUFACTURERS OF SOUND
EQUIPMENT, you can join ear organ-
ization and reap the advantages et the
largest and most comprehensive woad
service men'. organization in the world.
USERS OF SOUND EQUIPMENT.
write na. We have an electro-acenstical
engineer near you available now te
hell , / OIL
OVER 1000 MEMBERS— LOCATED IN EVERY STATE IN THE UNION,
EVERY PROVINCE OF CANADA AND MANY FOREIGN COUNTRIES
THE LARGIffl AND MOST COMPREHENSIVE ORGANIZED BODY OF SOUND
ENGINEERS IN THE WORLD
National Sound Service Bureau, Inc.
Organized under the laws of the State of New York as a non-profit mem-
bership Co-operative Bureau.

6
OFFICIAL RADIO SERVICE MANUAL
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lMode 20 A.C.
Prowe Unit
36; :
Model 21
A.C.
sChasis 64 3
Model 21
.C.A Poer w Unt i
35 6
el Mod 22
.C.A Cshassi 366
l Mode 22 A.C. Power
Unit 367
Mdel o 23
C.A. C hassis 368
Model
23
.A.C
Power
Ut ni 369
Model 19
C.D. 370
eModl 829 2-
373
Model
70 374
Model 80, 60 and 25 cycle
Model 89
Model 90
Model 99
Model 110
Model 120
375
376
377
378
379
380
CANADIAN WESTINGHOUSE CO.
LTD.
Model 56, W55A, W57, W60,
W68 371
6- Tube A.C. Chassis 1928 model
and 200B loud speaker; No
18 SPU 372
CAPEHART CORP.
See Webster Elec. Co. Page 350
CLEARTONE RADIO CORP.
Golderest Model 60; Model 80 112
Clearodyne Model, 70; Clear
tone Series 100 113
Model 110 compact; Model 112 114
COLONIAL RADIO CORP.
Model 31 A.C. 115
31 and 32 D.C. 116
32 A.C. 117
33 & 34 A.C. Remote Control . 330
Model 33 D.C.; Model 16 116B
OLUMBIA PHONOGRAPH CO.
(see Kolster)
6 tube A.C. set; 7 tube A.C.
set 118
Columbia C-5 and Kolster K-24;
C-5
Substitute . 119
Models 930-300; Model 931 120
Model 902; Type 950 radio and
phonograph combination 121
Models 900 - 801; Model 961 . 122
Power Pack for model 980; 6
tube D.C. set C6- C7 123
Type 980 radio and phonograph
combination 124
COLUMBIA RADIO CO.
Screen Grid - 8 .
Screen Chid 8 receiver .......
D
DAY- FAN ELECTRIC CO.
See General Motors Radio Corp.
DeFOREST-CROSLEY LTD.
DC- 5 compact; C-6 compact;
Conway and Hastings; War-
wick and Windsor .............. 381
Balmoral and Berwick; Band-
box Jr.; A.B.C. Power unit 282
Barcarolle and Minute; Etude
and
Symphony; Electric
Hastings 383
First Series Symphony; Elect-
Berwick; Second series Sym-
phony; Nocturne, A.C.; Con-
certo, Sonata and Opera 384
Types 400-420; 410 385
ARIA and Troubador models
Aria and Troubador models
type 740; type 750 386
DeFOREST RADIO CO.
CS-
5; F-5; D-17 353
DELCO RADIO CORP.
"Police" Short Wave Set _ 76A
Delco Automotive Radio . . 184
E
EARL RADIO CORI'.
See Chas. Freshman, Inc.
ELECTRICAL RESEARCH LABORA-
TORIES
Erla model 224 screen grid ...... 142A
Erla model 225 142B
THOMAS A. EDISON, INC.
(Also see Splitdorf)
R-4, R-6 and C-4 141
R-1, R-2 and C-2 Chassis Jr
and Je; Model C-1 chassis SC 142
RT 1, R-2 and C-2 chassis Jr
and Cr ( 25 cycle) 143
Models R-6 & R-7 .... 140B
Models R4, R5, D.C. 140D
ELECTRAD, INC.
Loftin- White amplifier 63
Type 250; and 250 Push- Pull 358B
EMERSON RADIO & PHONOGRAPH
125 CORP.
118B Model F 356
CONTINENTAL RADIO CORP.
Models Ten 29-A and B with
171-L Power Unit; Model 9 126
Slagle 29-C; Slagle 29-A & B 127
Ten 29-D and C with 250-L
power unit.......... . .... ... .....128
All Models 129
CROSLEY RADIO CORP.
AC- 7 and AC- 7C 130
Model 3B and 3C; Trirdyn 3R3;
5-38; Type V; Model 51;
2- stage A.F. amplifier fur
type V; Mddel X1 and XL 131
Model 4-29; Models 30S, 31S,
33S, 34S; Models 40S, 41S,
42S, 82S 132
Models 40S, 41S, 12S, 82S, ar-
ranged for M type speaker;
Model 401; Modcl 608 133
Models 60S, 61S, 62S, 63S;
Jewelbox 704-A 134
Model 601 135
Jewelbox 704-B; Showbox 706 136
Jewelbox 704; Gembox, Gem-
chest 610-609 A.C.; 804 A.C. 137 ..
Jewelbox 706; Models 20, 21,
22; Model RFL-90 138
Models 41-A & 42- AC; 6-20 and
6-85 . 139
Bandbox Jr. 401-A; 602 Band-
box; Buddy and Chum
Model 54 - New Buddy Midget
Wigit model 48
MIIIIULIIII1111111'.111111511Mtill
140
354
358A
F.A.D. ANDREA, INC.
FADA RESISTORS AND CONDEN-
SERS 76N
Fada 10, 11, 30 and 31 - 60
cy.; 11)2, 11Z, 30Z, 31Z - 25
cy.; 16, 17 and 32 - 60 cycle;
16Z and 32Z - 25 cycle 144
Fada 18 D.C.; Fada 22 battery 145
Fada 20 A.C. - 60 cycle; 20Z
A.C. - 26 cycle; 25 A.C. - 60
cycle; 25Z A.C. - 25 cycle 146
25 and 25Z with M-250 and
M- 250Z Electric Units; 35
A.C. - 60 cy; 3bZ A.C. - 25
cycle 147
Fada 40 A.C. 60 cycle using
P-250 Elec. Unit and 7-A
speaker; Fada 50, 70, 71
and 72 148
E-420 Electric Unit; E-180
Electric Unit; 192-A receiver,
192-S and 192- BS Units . 149
"7" A.C.; 75 and 77 A.C. 60
cycle 150
Special model 265 A and Fada
"7" model 475-A 151
460-A receiver and R-60 unit;
R- 80-A unit, 480-A or SF
50/80A 152
"Special" A.C. receiver 265 UA
or CA and RP- 65 - UA or CA;
262 - UA or CA and RP- 62 - UA
or CA; 480-B and SF 50 / 80 B 153
"ABC" 6 volt supply types
66-0 and 62-R; " ABC" 6 volt
supply types 86-V and 82-W;
Type J unit; Type " C" unit
used with " special" and 7 AC 154
Fada KA -6 Chassis for models
42, 44, 46, 41, 47 154B
Fada 5- tube Neutrodyne; 160
neutrodyne 154A
FEDERAL RADIO CORP.
Ortho-Sonic type 1); Series
Filament type D; 155
Model K 166
Series Filament type F; Ortho-
Sonic type H 157
Series Filament type E; Type M 158
FEDERATED PURCHASER
Melorad Cathedral Tone 365
FREED-EISEMANN RADIO CORP.
Model NR- 6; Model NR- 7;
Model NR- 9 - 9A 159
Model 10; Model NR- 11; Model .
NR 12 160
Model FE- 15; FE- 18; NR- 20;
NR- 60 161
Models 30, 40 and 48; Models
30N, 40N and 48N; Model 50 162
Model 130: Model NR- 215, NR-
400; English long and short
wave set 163
Model 457 Power Unit; Model
NR8ODC 164
Model 90S AC; Model NR- 95
AC; 470 165
Model NR- 85; Model 63; Model
800 166
CHAS. FREEMAN CO. INC.
Earl models 21 and 22; Earl
models 31 and 82 167
QD-16S; Model N 168
Model G; Model G power pack;
Model G with G60- S power
supply 169
Earl model 41; Freshman model
M with M- 60-S power supply 170
New and improved Masterpiece;
Equaphase; Model H-9 171
Combination K and K- 60-S;
QD-16S 172
Q-15 and Q-16; 2N «. nd 2N- 60-S 173
21AC and 22AC; 3Q-15 and
3Q-16 174
Model 121; Model 21 D.C.; Earl
models 33, 31 and 24 DC 175
32 and 32 AC; 31- SAC and 32-
SAC and Earl 33- SAC; 41AC 176
G
GENERAL ELECTRIC CO.
H-31 266A
H-71 2661i
H-51 266D
GENERAL MOTORS RADIO CORP.
Day- Fan OEM- 11; OEM- 7;
OEM- 7 super selective;
5- tube 1925 model 177
Day- Fan Five " 5044" 178
Model 5056 358A
Day- Fan Five Twenty Seven
5- tube; Six - 6 tube; Seven
7- tube 179
Day- Fan 6-61 - 6- tube; 6B -
6- tube; 6 Junior ti- tube; 6AC
6- tube 180
SAC - 5- tube; Model 35 7- tube;
6AC Power Set; C Junior AC
Power Set; 110 Volt D.C.
6- tube; Motor Generator Set 181
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