B.F. Goodrich 92-526 Schematic

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Product Information:
Model:92-526
Manufacturer:B.F. Goodrich (Mantola)

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

GOODRICH PAGE 20-

GENERAL INFORMATION

m -AC-DC table model superheterodyne with loop antenna
TUNING RANGE - 535 to 1620 Kc
IF FREQUENCY - 165 Kc

TUBE COMPLEMENT ~ 12BE6 - Converter

12BA6 - IF Amplifier
12AT6 - Detector, AVC lb lst AF Amp
5005 - Power Amplifier

35W# - Rectifier

POWER SUPPLY - 117V AC (SO to 60 cycles) or DC, 30 watts;

CAUTION: Never connect antenna or chassis to water pipe, radiator or

other ground.
ALI GNMENT

If AC power is used, use an isolation transformer between power line and
receiver. If isolation transformer is not available, conrect low side of signal

generator to B- through .l mf capacitor.

Connect low range output meter across speaker voice coil and set volume
control at mximum. For greatest accuracy, keep output of receiver at approximately
.05 watt (.05 Watt = .|40 volt on output meter) throughout alignment by reducing
signal generator output as stages are brought into alignment. Use a smell fibre

screwdriver for alignirg IF & diode transformers.

DUWY GENERATO R GENE RATOR POINTER

STEP ANTENNA CONNECTION FRmUENCY SET T0 ADJUST REMARKS

IF ALIGNMENT

1. `l mf Rear stator of L65 Kc Gang 1, 2, 3 Adjust for mx'lmum.
tuning cap opened k h

. " ' 1620 Kc '? S Adjust for maximum.

3. Nom Radiation 11400 Kc Tune for 6 Adjust for maximum.

loop* maxim

*Connect generator output to 5" diameter, 3 turn loop & couple to receiver loop. Keep
loops at least 12" apart.

? John F. Rider

Page 2:

GE NERAL INFORMATION

' AC-[XI table model superheterodyne with loop

TUNING RANGE -

TYPE

IF FREQUENCY - 455 Kc

TUBE COMPLEMENT - 12886 >> Converter
IZBAG - IF Amplifier

50C5 - Power Amplifier
SSW/L - Rectifier

POWER SUPPLY -

POWER SWITCH AND VOLUME CONTROL. The power switch
and volume control are combined and operated with
the left-hand knob. Turn radio ON hy rotating vol-
f ume knob to the right until a click is heard. Con-
tinued rotation of this control to the right will
increase volume. Turn receiver OFF hy rotating vol-
ume knob to the left until a click is heard.

NOTE! When operating from AC line, reverse
power line plug for minimum hum. If the receiver
does not operate from a DC power line after being
turned (II for a few minutes, reverse the power line

TUNING. Stations are tuned in with the right

Page 3:

PAGE 23-2 GOODRICH
MODELS 52-523,

TO REMOVE CHASSIS FROM CABINET

1- Remove dial Scale; it Pulls Off- 4. Remove the two screws that hold the chassis to
the Cabinet, These screws are accessible through

2. Remove the knobs; they pull off. slots in the loop panel.

3. Remove the two split plugs that hold top of loop 5. Slide chassis out of cabinet.
panel to cabinet.

ALIGNMENT

If AC power is used, use an isolation trans- maximum. For greatest accuracy, keep output of re-
former hetween power line and receiver. lf isola- ceiver at approximately .05 watt (.05 watt I .40
tion transformer is not available, connect low side volt on output meter) throughout alignment by re-

ducing signal generator output as stages are brought

into alignment. Use a small fibre screwdriver for
Connect a low 4range output meter across the aligning IF 8| diode transformers.

speaker voice coil and set the volume control at

of signal generator to ?5- through .l mf capacitor.

DUMMY GEN ERATO R GEN ERATOR GNN G

STEP ANTENNA CONNECTION FREQUENCY SET T0 ADJUST REMARKS
IF ALIGNMENT
1. .l mf Bear stator of 455 Kc Gang,Y l, 2, 3 6: 4 Adjust for maximum.

tuning cap opened

RF ALIGNMENT

2. .l mf Rear stator of 1620 Kc Gang 5 Adjust for maximum.
tuning cap opened

3. None Radiation |400 Kc Tune for 6 Adj'ust for maximum.
loop~ maximum i

*Connect generator output to 5" diameter, 3 turn loop 81 couple to receiver loop. Keep loops at least

` RAMP

(R) SECONDARY (BOTTOM)

FIGURE 2.

TUBE & TRIMMER LOCATION

Q John F. Rider

Page 4:

PAGE 20-2 GQoDRI0_I-|

MODELS 2-523,

l QSC TRIM @szNDARY IBOTTOMI
ANT. TRIM . ~ PRIMARY (Top)

A: - RAMP

(C) SECONDARY (BOTTOM)
(C) PRIMARY ITOP)

FINISH

START

GANG FULLY
CLOSED

DRIVE CORD

FULLY cLoSE GANG,
INSTALL cI-IASSIS IN
cABINET a SET DIAL
SCALE To N0. 55.

TUNING

(C)John F, Rider

Page 5:

GOODRICH PAGE 20-3

m5 33' Bmw, 22. noon .wzxo :_

(C)John F. Rider

Page 6:

GOODRICH PAGE 23 3

Rider

l._| Con _0? _wire _S
m, 24N, 3mm, mqmmr moon .m2 8. 3:55,: wma $99me jd _Ez

(C) John F.

Page 7:

PAGE 23-4 GOODRICH _
MODELS 92-523,
l REL LIST PART N0. DESCRIPTION PRIC
N0. PART N0. DESCRIPTION PRICE
03,1393 FARTS ._ ELECTMCAL 29R3010 Lug, soldering; #6; hot sinned
(gang) ..................... doz 30
(MPACITORS 257051 Palnut, hex: 3/8-32 x 9/16; cad
C-l '1X485960 Variable, Q-gang: includes pl (volume control mtg) ....doz 15
' pulley ................... 2.65 557771 Rivet; .088 x 3/16; stl; pol
C-2 81(691444 Paper: .05 mf 200V . .20 nkl (tube socket mtg) ...... per/c .50
C-4 8A691842 Paper: .1-5 mf (resonant at pl (spring tube shield mtg
455 Kc) .60 8: output transformer mtg)...per/c .50
7,3 218482847 Ceramic, multiple: 220 mmf; pl (tuning shaft bracket
c-9 2310591441 Electrolytic; 50 .nf-30 mf plain hex head; locking type;
150V ............. 1.10 cad pl (gang mtg) ... ....... doz .15
slotted hex head; locking
DIAL LIGHT type; cad p1 (pilot light
clear; #47 ............... .15 353398 Screw, sheet metal: #6 x 3/8
PKZ plain hex head; cad pl
wILS (bracket. loop mtg) ........ per/c .50
L-l, 24-](691446 Loop Antenna: includes 357454 Screw, sheet metal: #8 X 1/4 PKZ
I back panel ........ 1.05 plain hex head; cad pl
L-2 243690762 BC Oscillator Coil ........ .65 (speaker mtg) .............. per/C .50
357455 Screw, sheet metal: #8 x 3/8
.WEAKER PKA slotted acorn head;
LS-1 50](691765 or antique copper finish (loop
soot/8138 speaker, PM: 4": 3.2 ohm vC 2.60 meg) .. ,_ do. .15
i exch 1.95 47A482845 Shaft, tuning ......... .15
26](485936 Shield, coil (T-l 81 T-2) ....... .20
RESISTORS 26A481521 Shield, spring (tube shield).doz .50|
Note: All resistors are insulated carbon type 9A485979 Socket, pilot light Kr bracket... .30
unless otherwise specified. 9A472534- Socket, tube: miniature ........ .15
41A691088 Spring, tension coil (elect.
R-l 6R6028 22,000 20% 1/2W ......... doz 1.00 cap retaining) ................ .10
R-2 6R6018 100 20% l/2W ...... ...doz 1.00 41A14111 Spring, tension coil (dial
R-3 6R2118 3.3 meg 20% 1/2W ...doz 1.00 cord) ...................... doz .40
R-4 18A691440 Volume control: l meg; 1n- 4A70015 Washer, 'C' (tuning shaft re-
cludes ON-OFF switch ...... 1.00 tainer) .......... . ......... per/c .50
R-S 6R2109 10 meg 20% 1/2w .doz 1.00 457633 washer, flat, 9/15 x 11/64 x
R~6 6R6032 470,000 20% 1/2W .. ...doz 1.00 .033 stl; cud pl (loop mtg).doz ,15
R~7 605032 470.000 20% 1/2w >>~ ~~d?l 1'00 41(482859 Washer, insulated shoulder
R-B 685683 27 10% 1/2W ----- --~d?l 1-00 (loop mtg brkt) ...... . ..... doz .15
11-9 6R3953 1000 20% lW `... ....... Each 1,12
Ill-10 6R3992 150 20% 1/2W ............ doz 1.00 CABINET PARTS
1612690434 Cabinet, table model: plastic;
SWITCH A walnut ............... .95
5-1 - SasT Swltchi Part Of 'mlm 16K690438 Cabinet, table model: plastic;
COHUOI R'4 ~~~~~~~~~~~~~~ ' ivory ..... _ ...... ..... 5.40
16K690436 Cabinet, table model- plastic;
TRANSFORMERS green ................ . 4-0
T-l 248482863 IF. 455 Kc: complete ...... 1-70 1614691447 Cabinet, table model; plastic;
T-2 248482865 Diode, 455 Kc: complete 1.70 maroon _____ _ _________ '40
T-S 2510435973 Output Trensfwmer -------- -65 42.018598.; clip, dial Beale retainer ...dur .20
nut `25
CHASSIS PARTS - MECHANICAL 36K690444 Knob, |
7K690449 Bracket, loop mtg ....... , .10 36K591450 Knob,
7A690445 Bracket, pilot light mtg.. .10 ,25
7A77337 Bracket, tuning shaft mtg. .. .05 35K591459 Knob,
30A470651 Cord, line 8: plug: 6 ft long .75 38A25507 Plug, split (loop 8: hack to
46K680318 Core, iron; threaded (for T-l 8: cabinet mtg) . doz .15|
T-2) .......................... .10 34C69044l scale, dial . ._ _55
5A19658 Eyelet, spacer (gang mtg) ...doz .20 v357374 Screw, machine,
5A70404- Grommet, rubber (gang mtg) ..doz .60 plain hex head; cad pl
14A482844 Insulator, cord outlet ...... doz .25 (chassis mtg) .............. per/c ,50
PRICES SUB/ECT TU GIANGE WITHOUT NOTICE gl

(C) John F. Rider

Page 8:

PAGE 20-4 GOODRICH

No. Part E3. Descrigtion
CHASSIS PARTS - ELECTRICAL

C-l 1Xh85960 Variable, 2-gang: includes pulley .................

Dial Light

Coils

L-l 2hK691hh6 Loop Antenna: includes back panel .,...............
L-2 2hK690762 BC Oscillator Coil ................................

50Ch78138 Speaker, PM: h"; 3.2 ohm VC .......................
Resistors
l Note: All resistors'are insulated carbon type unless otherwise
R-3 6R2118 3.3 meg 20% 1/2W'................................
R-h 18.1691th volume control: 1 mcg; includes oN-oFF switch

(C)John F. Rider

Page 9:

Nc. Part No. Description

Resistors (cont'd)

Switch

S-l - SPST switch; part of volume control R-h ...........
I Transformers

T-l 2hBh82863 IF, hSS Kc: complete ..............................

T-2 2hBh82865 Diode, MSS Kc: complete ...........................

T-3 25Kh85973 Output Transformer ................................

CHASSIS PARTS - MECHANICAL
7K690bh9 Bracket, loop mtg .................................
7A690hh5 Bracket, pilot light mtg
7A77337 Bracket, tuning shaft mtg .........................

30Ah70651 Core, line & plug: 6 ft long ......................
h6K680318 Core, iron; threaded (for T-l & T-2) .............

5Al9658 Eyelet, spacer (gang mtg) ........................
SAYOhOh Grommet, rubber (gang mtg) .......................
1hAh828hh Insulator, cord outlet ...........................

29R3010 Lug, soldering: #6; hot tinned (gang) ............

237051 Palnut, hex: 3/8-32 x 9/16; cad pl (volume control

} 557771 Rivet: .988 x 3/16; stl; pol nkl (tube socket mtg)
557707 Rivet: .122 x 5/32 stl; nkl pl (spring tube shield

mtg & output transformer mtg) .......,...........

557701 Rivet: .122 x 3/16; stl; nkl pl (tuning shaft
bracket mtg) ............................,.......

38229h Screw, machine: 6-32 x 1/2 plain hex head; locking
type; cad pl (gang mtg) .........................

337205 Screw, machine: 8-32 x 1/h slotted hex head; locking
type; cad pl (pilot light brkt mtg) ..............

(C)John F. Rider

Page 10:

CABINET PARTS

(C)John F. Rider

cHAssIs PARTS - MECHANICAL (cont'd)

Screw, sheet metal: #6 x 3/3 PKZ plain hex head;
cad pl (bracket, loop mtg) ......................

Screw, sheet metal: #8 x 1/11, PKZ plain hex head;
cad pl (speaker mtg) ..................,.........

Screw, sheet metal: #8 x 3/8 PKA slotted acorn
head; antique copper finish (loop mtg) ..........

Shaft, tuning ....................................
Shield, spring (tube shield) .....................
Socket, pilot light & bracket

Socket, tube: miniature ..........................
Spring, tension coil (elect. cap retaining).....
Spring, tension coil (dial cord) ...............

Washer, "C" (tuning shaft retainer) . . . . . . . . . . . .

Washer, flat: 9/16 x 11/51; x .033 stl; cad pl

Washer, insulated shoulder (loop mtg brkt) ....-

Cabinet, table model: plastic; walnut (IZ-5911)..
Cabinet, table model: plastic; ivory (12-591)...

Cabinet, table model: plastic; green (12-596)...

Cabinet, table model; plastic; maroon (12-5911) . .
Clip, dial scale retainer ......................

Knob, control: plastic; ivory (12-591) .........

Knob, control: plastic; green (12-596) ...,...n

Plug, split (loop & back to cabinet mtg) .......

Scale, dial ....................................

Screw, machine: 8-32 x 5/16 plain hex head;
cad pl (chassis mtg) ..........................

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