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MODEL F-5 MODEL D-10 MODEL CS -5 MODEL D-17


PAGE 1-4 MISC.

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EXPERIMENTERS INFORMATION SERVICE

RADIART LABORATORIES

Model Navy C-10

I e. ---- -------- , ; a. .. ..Q,. 2-TUBt IMTLRM(DIATt FREG mootW010 FREQ BANK

.0005 MF a. NtDDD Mit- 67159 Kit R5) gANl(

The Experimenter.' Intormem el 6 a nvs si Berenice Nery Nadel faeeerrr-Lebe odroe e.i for -h.sth range from 600 melere dews t0 50 Metai. the bend being covered through the eaepealeot of tag d ate coil.

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Model Magnaformer 948

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Schematic diagram of the Magnaformer 9-8 Receiver. By means of the cam switch SW2 one stage of I.F. amplifica- tion can be cut out. This switch Is mounted on the front panel of the receiver, below the drum dials.


MISC. PAGE 1-5

CAM SWITCH

00035 .00035, MF. MF

60010-" OHM RHEO

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GALVIN MFG. CO.

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MISC. PAGE 1-9

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DAVID GRIMES, INC.

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PAGE 1-10 MISC.

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HATRY & YOUNG

iNDiCATES CONNECTION TO METAL CHASSIS

Model H -Y "7"

pates/ion 3-.. ------.,

RI -100.000 -ohm Durham metallic leak. Power R2-2-megohm Durham metallic leak. R3 -400 -ohm Electrad suppressor resis-

tance.

R4 -2,000 -ohm Electrad suppressor resistance.

R5 -25,000 -ohm Durham metallic. R6-3-megohm Durham metallic. R7 -25,000 -ohm Electrad royalty poten-

tiometer. R8 -50,000 -ohm Durham metallic. R9 -2,250 -ohm Durham metallic. R10 -10 -ohm centre -tapped Yaxley.

5*67 TO 75 VOLTS

Parta list given

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range with L3 about 1650-1475 kc. C5-.25 mfd. Sprague midget fixed con-

denser. C6-.0002 mfd. Sangamo fixed condenser. C7-Same as Cl. C8-.00015 Sangamo. C9-.00005 mfd. Sangamo. C10-.001 mfd. Sangamo. C11-1 mfd. Flechtheim. R -5,000 -ohm Electrad royalty poten-

tiometer.


MISC. PAGE 1-11

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ISO volts. C10 al'id ell-By-pass condensera, I.

mfd.. 400 Volts; C12 to CI6-Fixed condensers. .00023

mfd.; VI to V8-Heated cathode a.c. tubes; R3-Fixed resistor. 100,000 ohms; I Front panel; 1 Sub -base panel:

10 Binding posts; 2 Stage shields; 8 Coil sockets; 8 Tube sockets; I Drum dial; 1 Grld-leak mounting; 2 Condenser extension shafts; 2 Tlp Jack and plugs;

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former :

T3-Filament transformer LA and L2-Audio-frequency chokes: L3-Center-tapped. audio -frequency

ch ke

Cl, .'2 and C3-Filter condensers, 2 mid 0,000 colts:

Ri-Fixed resistor. 4,000 ohms, 50 watts:

R2 - Fixed resistor, 750 ohms, 25 watts:

R3 and R4-Variable resistor,. 10,000 ohms;

R5-Rheostat. 60 ohms; R6 and R7-Variable resistors, 500

.h ms :

4 to C7-Fixed condensers, 1 mid., 400 volts ;

VI and V2-Power tubes, '30 type; V3 and VO-Rectifier tubes, '81 type; 4 Tube sockets ;

12 Binding posts; I Front panel; 1 Sub -base panel; 1 110 -volt receptacle.

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OPERADIO CORP. MODEL 1926 MODEL 1926 MODEL 7

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MISC. PAGE 1-17

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PAGE 1-18 MISC.

T

TODD

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STENODE RADIOSTAT

TODD ELECTRIC COMPANY

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1VIISC. PAGE 1-19

MODEL AC 29 STANDARD RADIO CORP.

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C 3RD.R.F. COIL

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PAGE 1-20 MISC.

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INTERMEDIATE FREQ. TRANSFORMERS

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MISC. PAGE 1-21

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MISC. PAGE 1-23

CO..ptNMTON

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GEORGE W. WALKER CO.

.N. O.N AON,NTaN

VICTOREEN MASTER CONTROL

UNIT O

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UNIT

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PAGE 1-24 MISC.

ZANEY-GILL CORP.

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Modal Yitatalns 54

SWITCH & VOLUME The switch and volume control are located on the lower right hand knob which, when turned completely to the left, will act as a switch. To Increase volutllA gradually turn to the right until desired output is gained, being careful to see that the tuning indicator is directly on the station signal. The lower left hand knob operates VITATONE and tone control. The principle of VITATONE is supplying the backward notes with vitality and bringing them to the proper required impetus so that all reception carries breadth as well as the other registers. A further use of VITATONE is the elimination of line noises and static. which also can_be accomplished by turning the knob completely to the right. This latter feature Is excep tionally desirable for distance reception. HINTS NECESSARY FOR BETTER RADIO RECEPTION Use only standard high grade tubes. Cheap tubes will result in poor reception, poor tone and break downs at inopportune moments.

FUSE Should there be a short in the wiring or a defective tube installed in the set, the fuse, which is located on the right hand side of the chassis assembly, will be blown. This can be replaced by an ordinary 3 amp. automobile type fuse. There are two positions to install the fuse, the two rear clips being used for 110 volts and the two front clips being used where excessive voltages rises as high as 130 volts. In case of any unusual disturbances in the set, do not attempt to operate same until advised by an experienced service man.

If set does not light, inspect plug connections to wall, also fuse.

If set lights and does not play, inspect speaker termi- nal and see it it is plugged into the holes marked speaker at the rear of the chassis.

Also, have tubes tested for probable filament shorts.

In all cases, do not attempt to repair the set yourself. Call a competent service man, otherwise your guarantee will he nullified and void.

CAUTION: Before attempting to install or operate, ascertain if this receiver corresponds with the voltage and the cycles of your power supply. The voltage and cycle reading is marked plainly on the license plate. ("Check Same"). Information on the above figures can be ascertained by calling your local power company. In localities where extreme fluctuations of voltages oc- cur, we recommend that a separate voltage compensator be used to maintain a steady power supply.

ANTENNA & GROUND The quality and amount of reception depends on the correct use of both aerial and ground. In congested areas where several broadcasting stations are in operdtion, it is not necessary to haie an outdoor aerial. Set can be operated on from 3 to 15 feet of aerial for all local reception. In outlying territories or where your rela tivity to a broadcasting station permits, an aerial of from 25 to 150 feet may be used properly insulated and with correct lead-ins. A very important feature in connecting a radio is to have a good ground as close to the receiving set as pos- sible. A poor ground is a producer of noises, fading and generally poor reception. Both aerial and ground should be inspected every six months for loose connec tions or broken strands. Aerial and ground connections are marked on the binding posts at the back of the chassis.

TUBES The equipment for this radio consists of 3-224, 1-227, 1-280 and 1-246.

CAUTION: Do not insert or remove tubes from sockets while current is turned on.


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