AWA 612T, 710C Diagram

Page 1

ELECTRICAL SPECIFICATIONS

FREQUENCY RANGES:

(1) 1500-540 Kc/s (200-555 M.)
(2) 4.0-1.5 Mc/s 75-200 M.)
(3) 9.7-3.6 Mc/s (31-83.5 M.)
(4) 12.0-9.0 Mc/s (25-32 M.)
(5) 15.0-11.7 Mc/s (20-25.7 M.)
(6) 19.0-15.0 Mc/s (15.8-20 M.)
171 223-177 Mc/s (135.17 M)

INTERMEDIATE FREQUENCY

BATTERY COMPLEMENT:

There are two modes of operation—one employing "B" batteries and a 2-volt accumulator, and the other a Vibrator Power Unit, type 17770, powered from a 6-volt accumulator.

455 Kc/s

Battery cables are available with telephone tips for "B" batteries fitted with Fahenstock clips, or with plugs for socket-type batteries.

The batteries used and their respective cables are as follows:---

Battery Operation: Cable with
Tips.
Cable with
Plugs.
I—2 volt accumulator 17772 19799
3—45 volt "B" batteries
1—4.5 volt supplementary dia
lamp hattony

Vibrator Power Unit Operation:

1-6 volt accumulator and Vibrator Power Unit, 17770.

BATTERY CONSUMPTION:

Battery Operation: 2 volt "A" battery—0.72 amp. 135 volts "B" battery—17-20 mA.

Vibrator Operation ...... 1.0 amp.

Page 2

SIMPLE SHORT WAVE CALIBRATION ADJUSTMENT.

The short wave calibration may be adjusted slightly, without removing the chassis from the cabinet for full alignment by adjusting the four cores, L19, L21, L23 and L25 after a station of known frequency is received.

The correct procedure is as follows:

  • (1) Set the dial pointer so that calibration is correct on the medium wave band.
  • (2) To adjust the calibration of the 22.3-17.7 Mc/s band, tune in the known station, and to shift the pointer position to the left, turn L9 clockwise or vice versa until the station can be tuned in at its assigned frequency.

(3) The adjustments for the 19.0-15.0, 15.0-11.7, and 12.0-9.4 Mc/s bands are similar, using L21, L23 and L25 respectively.

VIBRATOR POWER UNIT No. 17770.

Operating from a 6 volt accumulator, the Vibrator Power Unit supplies the correct H.T. supply voltage for the receiver. It contains a plug in vibrator cartridge, stepup transformer, an efficient filter system and a 5 amp. fuse, which is located within the unit.

The unit is connected to the receiver by means of a cable and plug. See "Battery Connections" diagram.

To remove the vibrator unit from the cabinet, disconnect the cable from the receiver and unscrew the three holding screws which pass through the base of the cabinet.

BATTERY CONNECTION.

CHASSIS REMOVAL AND REPLACEMENT.

Turn the Phono-Range Switch to the 22.3-17.7 Mc/s position and then remove three control knobs from the front of the cabinet. These knobs are each held by one set screw. To remove the two knobs at the side of the cabinet, proceed as follows:---

Table Model.

The knobs pull straight off. Do not loosen the set screw in the lower knob. If difficulty is experienced in removing this knob, refer to the label adhered to the inside of the cabinet for instructions.

Console Model.

The knobs are not removed, but the spindles to which they are attached are parted at the couplinngs within the cabinet.

  • (2) Disconnect the loudspeaker and battery or vibrator cables.
  • (3) Disconnect the dial pointer from the drive cord, first unscrewing the thumb nut.
  • (4) Disconnect the sheathed cord, which actuates the band indicator on the dial scale. The cord is connected to the dial assembly at two points, the sheath to the top left-hand corner of the dial assembly (viewed from the

rear) and the cord to the band indicator. Loosen the thumb screws at these points and carefully free the cord from the assembly.

  • (5) The chassis is held in the cabinet by four bolts. Remove these and withdraw the chassis from the cabinet.
  • (6) Replacing the chassis in the cabinet is a direct reversal of the above instructions, but care must be taken to connect the dial pointer to the drive cord as follows:—
    • (a) Turn the tuning control to bring the ganged capacitor plates into full mesh.
    • (b) Connect the dial pointer to the drive cord with the pointer in a position opposite the setting mark on the dial scale, which is approximately 1/4 inch to the right of the 540 kc/s calibration point.

"SERVICE WINDOW."

A "Service Window" is provided in the base of the table model cabinet. The "Window" is normally covered with a perforated grille fastened by four knurled nuts. With the grille removed, it is possible to perform most service operations without removing the chassis from the cabinet.

Page 3

MECHANICAL SPECIFICATIONS

Height. Width. Depth. Overall Chassis Height 9
Cabinet Dimensions (inch əs)— Weight (nett Ibs.)—
Table 26 1 Table 39
Console 32 1 33 13 Console 84
Chassis Base Dimensions (in nches) 3 1 16 75 Cabinet Finish Walnut Venee
SOCKET V OLTAG ES
Valve. В. Bias
/olts.
V.
Scr
Vo
B.
een
Its.
V.
Scre
Curr
B.
ent.
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An
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B.
ode
olts.
V.
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rent.
V.
Filan
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B.
nent
Its.
V.
IM5G R.F. Amplifier 0 0 . 50 58
0.6
0.74 128 153 1.0 2.6 2.0 2.0
IC7G Converter, M.W. * -2.0 44 52 1.7 2.0 126 152 1.4 0.8 2.0 4.0
S.W –1.5 -2.0 46 59 1.5 1.7 126 152 1.8 1.2 2.0 4.0
Oscillator, M.W 50 57 1.9 2.4 ,
S.W 1 100 115 3.0 4.0
IM5G I.F. Amplifier 0 50 58 0.6 0.74 128 153 1.0 2.6 2.0 2.0
١K7G Detector –1.5 -2.0 40 40 0.08 0.05 60 65 0.2 0.13 2.0 4.0
IL5G Output 4.5 -4.0 128 155
1.0
2.2 itan e c 125 150 () aga "Natari"
-
4.5 10.0 - 2.0 6.0

Measurements taken with 1,000 ohms per volt meter, no signal input, and volume control in maximum clockwise position.

*A.V.C. bias on M/W and 75-200 M. bands.

†Zero bias on M/W and 75-200 M. A.V.C. on other bands.

ALIGNMENT PROCEDURE

Alignment should be necessary only when adjustments have been altered from the factory setting, or when repairs have been made to the tuned circuits. Climatic conditions should not seriously affect the receiver.

It is important to apply a definite procedure as given in the booklet, and to use adequate and reliable test equipment. Instruments ideally suited to the requirments are either A.W.A. Junior Signal Generator type 2R3911 or the A.W.A. Modulated Oscillator type J6726 and C1070*. An output meter is necessary with both these instruments, the recommended type having an output impedance of 15,000 ohms and a range of 5-3,000 milliwatts. The meter should be connected across the primary of the loudspeaker transformer, with the voice coil of the loudspeaker opencircuit. If the output meter used is one which does not impress a load on the anode circuit of the output valve, it will not be necessary to open-circuit the voice coil.

As the calibration of the band-spread requires great accuracy, it is recommended that an A.W.A. Crystal Calibrator type 6795 be used, after setting the oscillator calibration to check the accuracy of the signal generator. The crystal calibrator emits a modulated signal at intervals of either 100 or 1.000 Kc/s throughout the radio frequency spectrum, thus providing a series of fixed and equally spaced calibration points of known accuracy. When using this instrument, care should be taken to select the correctsignal. With the crystal set at the 1,000 Kc/s position, a spurious image signal can generally be obtained by turning the tuning control of the receiver to a point approximately 100 Kc/s higher in frequency. This is a useful check as to whether a harmonic or spurious image is being tuned. If a crystal calibrator is not available, broadcasting stations of known frequency my be used as an alternative.

When using a signal generator or modulated oscillator, with the tuning of the receiver fixed, two frequencies can be tuned from the test instrument, one 0.92 Mc/s higher in frequency than the other. In all cases the desired freguncy is the lower of the two.

A convenient alignment jig designed to hold the receiver chassis and fitted with a dial scale and pointer may be obtained from the Service Dept. of the Company. With this jig, alignment may be carried out with the chassis coupled to an actual scale, thus ensuring that the calibration will be correct when the chassis is placed in the cabinet, otherwise use the 0-180° calibration scale on the drum. (See alignment table.)

For all alignment purposes, connect the low side of the signal generator to the receiver chassis.

Perform alignment in the proper order, as shown in the chart, starting from No. I and following all operations across, then No. 2, etc.

Keep the volume control set in the maximum clockwise position and regulate the output of the test instrument so that a minimum signal is introduced to the receiver to give a standard indication on the output meter. This will avoid A.V.C. action and over-loading.

When the receiver has been satisfactorily aligned, seal the adjusting screws with a small quantity of cellulose cement.

* If a type J6726 or C1070 instrument is used, see that a 0.25 megohm resistor is connected between the output terminals, and, for short wave alignment, a 400 ohm non-inductive resistor in series with the active output lead.

Page 4

CHASSIS (UNDERNEATH VIEW).

Page 5

ALIGNMENT TABLE

Alıgn-
ment
Order.
Test Inst.
Connect to
Receiver.
Frequency
Setting
Band
Setting.
Calibration
Scale
Setting.
Circuit to
'Adjust.
Adjustment
Symbol.
Adjust to
Obtain.
I IC7G Cap* 455 kc/s Broadcast 2nd I.F. Trans. Core 36 Max. Peak
2 IC7G Cap* 455 kc/s Broadcast 2nd I.F. Trans. Core 35 Max. Peak
3 IC7G Cap* 455 kc/s Broadcast Ist I.F. Trans. Core 34 Max. Peak
4 IC7G Cap* 455 kc/s Broadcast Ist I.F. Trans. Core 33 Max. Peak
Recheck 1, 2, 3 and 4
5 Aerial 600 kc/s Broadcast 19° Oscillator† Core L31 Calibration
6 Aerial 1500 kc/s Broadcast 168° Oscillator C8 Calibration
7 Aerial 1450 kc/s Broadcast 158° Radio Frequency C20 Max. Peak
8 Aerial 1450 kc/s Broadcast 158° Aerial C4 Max. Peak
Rechec k 5, 6, 7 and 8
9 Aerial 17.8 Mc/s 22.3-17.7 Mc/s I8° Oscillator Core L19 Calibration
10 Aerial 17.8 Mc/s 22.3-17.7 Mc/s 18° Radio Frequency† C22 Max. Peak
· 11 . Aerial 17.8 Mc/s 22.3-17.7 Mc/s 18° Aerial C2 Max. Peak
12 Aerial 21.0 Mc/s 22.3-17.7 Mc/s 149° Oscillator C10 Calibration
13 Aerial 15.2 Mc/s 19.0-15.0 Mc/s 27° Oscillator Core L21 Calibration
14 Aerial 11.8 Mc/s 15.0-11.7 Mc/s 25° Oscillator Core L23 Calibration
15 Aerial 11.8 Mc/s 15.0-11.7 Mc/s 25° Radio Frequency† C23 Max. Peak
16 Aerial 11.8 Mc/s 15.0-11.7 Mc/s 25° Aerial C3 Max. Peak
17 Aerial 9.5 Mc/s 12.0-G.4 Mc/s 24° Oscillator Core L25 Calibration
18 Aerial 9.0 Mc/s 9.7-3.6 Mc/s 156° Oscillator CI4 Calibration
19 Aerial 9.0 Mc/s 9.7-3.6 Mc/s 156° Radio Frequency† C24 Max. Peak
20 Aerial 9.0 Mc/s 9.7-3.6 Mc/s 156° Aerial C60 Max. Peak
21 Aerial 4.0 Mc/s 9.7-3.6 Mc/s 19° Oscillator Core ,L27 Calibration
-
Recheck 18, 19,'20 an d 21
22 Aerial | 1.6 Mc/s 4.0-1.5 Mc/s 15° Oscillator Core L29 Calibration
23 Aerial 3.7 Mc/s 4.0-1.5 Mc/s | 153° Oscillator C17 Max. Peak

Finally, recheck broadcast band. This is necessary only if the setting of C10 has been altered.

† Rock the tuning control back and forth through the signal.

* With Grid Clip connected. A 0.001 uF capacitor should be connected in series with the "high" side of the test instrument.

The column headed "Calibration Scale Setting" refers to the 180° scale on the ganged tuning capacitor drive drum. In taking readings on this scale, read from the right-hand edge of the pointer; that is the edge nearest the rear of the chassis. Check the setting of the drum before taking readings. The zero mark should be opposite the pointer with the tuning capacitor fully closed.

DESCRIPTION OF TUNING CIRCUIT ADJUSTMENTS

Broadcast Band.

The broadcast band adjustments follow usual practice with three trimming capacitors---C4 aerial, C20 R.F., C8 oscillator and a variable magnetite core for L.F. adjustment of the oscillator coil L31, L32.

9.7-3.6 Mc/s Band.

Adjustments are the same as those used on the broadcast band, that is with three trimming capacitors—C60 aerial, C24 R.F., C14 oscillator and a variable magnetite core for L.F. adjustment of the oscillator coil L27, L28.

4.0-1.5 Mc/s Band.

All capacitors in the aerial and R.F. sections are common with those in the 9.7-3.6 Mc/s band, the change of band being accomplished by switching tapped coils. The oscillator section, however, is provided with a separate capacitor, C17, for tracking with the signal circuit at the H.F. end, and a variable magnetite core for L.F. adjustment of the oscillator coil L29, L30.

22.3-17.7 Mc/s Band.

At the L.F. end of this band there are three adjustments, a magnetite core in the oscillator coil L19, L20 and trimming capacitors C22 R.F. and C2 aerial. Small capacitors C1, C21 and C7 are used in series with the ganged tuning capacitors to accomplish band spreading at the L.F. end of this band. The oscillator circuit is made to track with the signal ciruit at the H.F. end by adjustment of capacitor C10. The three series capacitors are chosen to give three point tracking between the signal and oscillator circuits.

19.0-15.0 Mc/s Band.

The capacity system is the same as for the 22.3-17.7 Mc/s band, the change of band being accomplished by switching coils, the oscillator coil L21, L22 being fitted with a variable magnetite core for L.F. adjustment.

15.0-11.7 Mc/s Band.

Adjustments are similar to those on 22.3-17.7 Mc/s band, excepting that no H.F. adjustment is provided for the oscillator L.F. Adjustments are trimming capacitors C23 R.F., and C3 aerial, and a variable magnetite core in oscillator coil L23, L24.

12.0-9.4 Mc/s Band.

One adjustment only is provided, a variable magnetite core in the oscillator coil L25, L26.

It will be noted that the Ratio max. frequency is the same on the four band, 12.0-9.4 Mc/s, 15.0-11.7 Mc/s, 19.0-15.0 Mc/s, 22.3-17.7 Mc/s, and the tracking is practically correct using the same series capacitor for all bands. The ratio max. frequency min. frequency is also the same on the 4.0-1.5 Mc/s and the 9.7-3.7 Mc/s bands, but, due to the greatly different frequency spectrum of the oscillator, the series capacitors in the two oscillator circuits are different.

Page 6

TUNING DRIVE CORD REPLACEMENT.

The accompanying diagram shows the route of the cord and the method of attachment. Whilst fitting the cord, keep it taut and adjust the length so that the tension spring measures approximately 2 inches long when fitted. The spring should be sheathed to prevent it rattling against the drum.

LOUDSPEAKER SERVICE.

It is inadvisable to attempt loudspeaker repairs other than adjustment of the voice coil and replacement of the transformer. The fitting of a new cone should be done only by service departments suitably equipped to do the work.

To centre the voice coil, first remove the dust cover. To do this, use a very sharp razor blade and cut the centre out of the dust cover, cutting just inside the edge of the voice coil former, which can be felt with the forefinger. Do not attempt to tear the cover from the cone. Loosen the suspension screws, insert three narrow paper "feelers" in the gap and re-tighten the suspension screws. The "feelers" should be approximately 3/16 inch wide and 0.006 inch thick.

After adjusting, test the loudspeaker, and, if satisfactory, fasten a replacement dust cover in place with Latex rubber cement. See "Mechanical Replacement Parts."

MECHANICAL REPLACEMENT PARTS

ltem. Part No.
Cabinet, console C69Z
table C67Z
Cable, band indicator 20374
Cable, loudspeaker—
Table AY32 or AY21 19186
Console AUI2 or AU36 19188
Cable, pick-up 17725
Cable, ''B'' battery—
With plugs 19799
With tips 17772
Cable, dial lamp 19682
Cone assembly, loudspeaker—
Table 9356
Console 9910
Core, Magnetite—
Small 11403
Large 11400
Dial Frame Assembly
Table 20249A
Console 20251 A
Dial Scale 20159
Drum, band indicator—
Table 20372
Console 20373
Knob 458 9
Knob, range switch 584 6
Knob tuning 9407
ltem. Part No
Mount plate assembly,, tuning drive-
Table 17816
Console 9916
Pulley, brass 7885
Screen, I.F. transformer 3351
Сар 837 2
Screen, Valve 8147
Сар 8148
Register 4733
Socket, dial lamp 4194
Socket, valve 4704
Socket, valve, cushion 7326
Spindle, tuning drive—
Table 9812
Console 17739
Spindle, range switch extension-
Table 19066
Console 19584
Spindle, tuning control extension 19583
Spring, band indicator 8364
Spring, drive tension 6641
Strip, tag, I way 7628
2 way 8863
3 way 9 877
7 way 19664
Vibrator Power Unit No 17770
Socket Vibrator 8498
Strip, tag-2 way 8570
Page 7

CIRCUIT CODE

Description Steet Code
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Description. Stret Code
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Sold No. Description. Stret Code
Sold No. Description. Stret Code
Sold No. Description. Stret Code
Sold No. Description. Stret Code
Sold No. Stret No. Stre No. Stret No. Stret
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Code 1
4 បី 3 0 õ ပိ CIO Ū CI2 Ę - C_4 CI5 CI6 CI7 ő CI9 C20 G C22 25 C25 C26 C27 C28 20 170 C30 ë 33 3 8 3 2 C35
Description.Stock CodeCircuitDescription.SINDUCTORS.INDUCTORS.Relistors.NattResistors.SINDUCTORS.INDUCTORS.Relistors.NattNattrial Coil, 13-16 metres 9852R1Resistors.Nattrial Coil, 13-16 metres 9852R3500 ohms, 1 wethNattrial Coil, 10-20 metres 9852R51 megohm, 4 wathNattScience 101, 20-25 metres 9852R550,000 ohms, 1 wethNattScience 101, 20-25 metres 9853R550,000 ohms, 4 wathNattScience 101, 20-25 metres 9854R8320 ohms, 4 wethNattScience 101, 13-16 metres 9853R120,000 ohms, 4 wethNattScience 101, 13-16 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNattF. Coil, 20-25 metres 9853R120,000 ohms, 4 wethNatt tock Code
or Part No.
-
90061 19007 - 19659
19659
Stock Code Stock Code Circuit Description INDUCTORS. or Part No, Code No, Description INDUCTORS. RESISTOI INDUCTORS. R1 RESISTOI rial Coil, 13-16 metres 9852 R1 R2 S500 ohms, 1 rial Coil, 16-20 metres 9852 R3 S00 ohms, 1 With, 1 rial Coil, 16-20 metres 9852 R5 1 megohm, 4 Y rial Coil, 16-20 metres 9853 R1 S000 ohms, 4 Y rial Coil, 17-200 metres 9853 R1 R1 S0,000 ohms, 4 rial Coil, 13-16 metres 9853 R1 R1 S0,000 ohms, 4 rial Coil, 13-16 metres 9853 R1 R1 S0,000 ohms, 4 rial Coil, 13-16 metres 9853 R1 R1 S0,000 ohms, 4 rial Coil, 13-16 metres 9853 R1 R1 S0,000 ohms, 4 r, Coil, 13-16 metres 9853 R1 R1 S0,000 ohms, 4 r, Coil, 13-18 metres 9853 R1 S0,000 ohms, 4 S0,000 ohms, 4 r, Coil, 13-18 metres 9853 R1 R1 S0,000 ohms, 4 S0,000 ohms, 4 r, Coil, 16-20 metres 9853
Stock Code Stock Code Code No. C INDUCTORS. or Part No. Code No. I INDUCTORS. R1 Image R1 Image srial Coil, 13-16 metres 9852 R2 25,000 S srial Coil, 16-20 metres 9852 R3 500 S srial Coil, 16-20 metres 9852 R4 500 0 srial Coil, 16-20 metres 9852 R5 1 meg Srial Coil, 31-83 metres 9853 R1 25,000 R1 S e, e SS. vatt
:
watt
/att
att watt F watt watt att r watt s watt ttew i k watt watt Volume 4 watt watt watt watt watt att /att e watt watt watt att oue 4He ORS. I rimmer
Trimmer
Stock CodeStock CodeCode No.Description.or Part No.Code No.INDUCTORS.N.N.rial Coil, 19-16 metres 9852R1srial Coil, 19-20 metres 9852R3srial Coil, 20-25 metres 9852R4srial Coil, 27-200 metres 9852R6srial Coil, 75-200 metres 9853R1srial Coil, 13-16 metres 9853R1srial Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-16 metres 9853R1F. Coil, 13-18 metres 9853R1F. Coil, 13-18 metres 9853R1F. Coil, 13-18 metres 9853R1F. Coil, 13-18 metres 9853R1F. Coil, 13-18 metres 9853R1R1R2F. Coil, 13-18 metres 9853R1R2R1F. Coil, 13-18 metres 9853R1R2R1F. Coil, 10-20 metres 9855R1R2R2Sc. Coil, 13-18 metres 9744R2Sc. Coil, 13-18 metres 9745R2Sc. Coil, 10-20 metres 9745R2Sc. Coil, 13-18 metres 9745R2Sc. Coil, 10-20 metres 9745R2Sc. Coil, 13-18 metres 9745R2Sc. Coil, 10-20 metres 9745R2Sc. Coil, 100-540 kc.10054ASc. Coil, 100-540 kc.10054A< Sescription. RESISTORS. johm, ½ watt ohms, I watt
hms. I watt
hms, ½ watt johm, ½ watt ohms, ½ watt ohms, I watt hms, watt egohm, ½ watt ohms, * watt ohms, ½ watt
ohmo 1
eqohms. + watt ohms. 4 watt eqohms, Volume trol egohms, ½ watt
hm I
agohm. 4 watt egohm, 4 watt egohm, I. watt ohms, I watt hms, ½ watt hms, 4 watt egohm, ½ watt egoh m, ½ watt ohms, ½ watt nms, ž watt egohm, Tone
trol
nms. 4 watt APACITORS. F mica _
r _ r _ r
uuF Air Irimmer
uuF Air Trimmer
Stock Code
Description. or Part No.
INDUCTORS.
Strial Coil, 16-20 metres 9852
arial Coil, 13-16 metres 9852
arial Coil, 13-13 metres 9852
arial Coil, 20-25 metres 9854
arial Coil, 27-200 metres 9854
arial Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-16 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9853
F. Coil, 13-18 metres 9744
Sc. Coil, 13-18 metres 9744
f. Transformer 82862
d I.F. Transformer 82862
d I.F. Transformer 82862
d I.F. Transformer 82852
Sc. Coil, 31-83 metres 9743
F. Sonoth-
ng Choke 8243E
o. Description. RESISTORS. 🔬 l megohm, ½ watt 25,000 ohms, 1 watt
500 ohms. 1 watt
500 ohms, 1 watt I megohm, watt 50,000 ohms, ½ watt 25,000 ohms, 1 watt 320 ohms, ½ watt 0.1 megohm, ½ watt 50,000 ohms, * watt 20,000 onms, 2 watt 1.6 meachms. + watt 50.000 ohms. 4 watt 0.5 megohms, Volume Control 1.6 megohms, ½ watt
1 mocohm 1 watt
0.5 megohm. 4 watt 2.5 megohm, 4 watt 0.2 megohm, I. watt 50,000 ohms, 1 watt 320 ohms, 1 watt 100 ohms, ½ watt 0.4 megohm, ½ watt 0.1 megohm, ½ watt 50,000 ohms, + watt 630 ohms, + watt 0.1 megohm, Tone
Control
100 ohms. 4 watt CAPACITORS. 52 uuF mica 13-3/ uur Air Irimmer
13-37 uuF Air Trimmer
Stock
Description. or Pa-
INDUCTORS.
INDUCTORS.
srial Coil, 13-16 metres
srial Coil, 16-20 metres
srial Coil, 20-25 metres
srial Coil, 20-25 metres
srial Coil, 31-83 metres
srial Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-16 metres
F. Coil, 13-18 metres
F. Coil, 20-25 metres
F. Coil, 13-18 metres
F. Coil, 31-83 metres
F. Coil, 31-83 metres
F. Coil, 31-83 metres
F. Coil, 31-83 metres
f. Coil, 31-83 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 13-16 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 15-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
f. Coil, 16-20 metres
Circuit
Code No. Description.
RESISTORS. RI watt R2 25,000 ohms, 1 watt
R3 500 ohms, 1 watt
R4 500 ohms, 4 watt R5 I megohm, ½ watt R6 50,000 ohms, ½ watt R7 25,000 ohms, 1 watt R8 320 ohms, 1 watt R9 0.1 megohm, ½ watt KIU 50,000 ohms, * watt RII 20,000 ohms, watt
DI3 43,000 ohmo I
RI3 I.6 meachms. 4 watt R14 50.000 ohms. 4 watt RI5 0.5 megohms, Volume Control RI6 I.6 megohms, 1 watt
RI7 I meachm I watt
RI8 0.5 megohm. J watt R19 2.5 megohm, 4 watt R20 0.2 megohm, I. watt R21 50,000 ohms, 1 watt R22 320 ohms, 1 watt R23 100 ohms, ½ watt R24 0.4 megohm, ½ watt R25 0.1 megohm, ½ watt R26 50,000 ohms, ½ watt R27 630 ohms, 1 watt R28 0.1 megohm, Tone
Control
R29 100 ohms. 4 watt CAPACITORS. CI 52 uuF mica C2 13-37 uuF Air Trimmer
C3 13-37 uuF Air Trimmer
Description.
INDUCTORS.
INDUCTORS.
Inal Coil, 13-16
arial Coil, 16-20
arial Coil, 20-25
arial Coil, 27-20
arial Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 n
F. Coil, 13-16 sc.
Coil, 13-16 sc.
Coil, 13-16 sc.
Coil, 13-16 sc.
Coil, 13-16 sc.
Coil, 15-20 sc.
Coil, 15-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Coil, 16-20 sc.
Sc.
Sc.
Sc.
Sc.
Sc.
Sc.
Sc.
Sc.
Sc.
S
c Code Circuit
Int No. Code No. Description.
RESISTORS. 9852 | RI ™™, I megohm, ¥ watt 9852 Kz 25,000 ohms, 1 watt
R3 500 ohms, 1 watt
9852 R4 500 ohms, ½ watt R5 I megohm, ½ watt 9852 R6 50,000 ohms, ½ watt 9854 R7 25,000 ohms, 1 watt 9854 R8 320 ohms, 1 watt R9 0.1 megohm, ½ watt 13 69A K10 50,000 ohms, ½ watt 9853 | KII 20,000 ohms, ½ watt 9853 N.2 03,000 00015, 1 watt
R13 1.6 meaohms. 4 watt
20.000 ohms. 4 watt RI5 0.5 megohms, Volume 9853 Control 9855 | R16 | 1.6 megohms, 1 watt 9855 | R18 0.5 meachm. 4 watt RI9 2.5 megohm, 4 watt 1368A R20 0.2 megohm, I watt 9747 R21 50,000 ohms, 1 watt 9746 | R22 320 ohms, ½ watt 9745 | R23 100 ohms, ½ watt 9744 | R24 0.4 megohm, ½ watt 9743 R25 0.1 megohm, ½ watt 9742 R26 50,000 ohms, ½ watt R27 630 ohms, ½ watt 054A R28 0.1 megohm, Tone
Control
3286Z R29 100 ohms 4 watt 3287Z CAPACITORS. 3149 CI 52 uuF mica CZ 13-3/ UUF AIT ITIMMER
2243E C3 13-37 UUF Air Trimmer
Description of the contract of Stock Code Circuit
or Part No. Description.
RESISTORS metres 9852 RI ***** I megohm, ½ watt metres 9852 | KZ 25,000 ohms, I watt
| R3 500 ohms. I watt
metres 9852 R4 500 ohms, 4 watt R5 I megohm, ½ watt metres 9852 | R6 50,000 ohms, ½ watt metres 9854 R7 25,000 ohms, 1 watt 0 metres 9854 | R8 320 ohms, ½ watt dcast R9 0.1 megohm, 1 watt 10369A | KIU 50,000 ohms, * watt netres 9853 | KII 20,000 ohms, ½ watt
| DI2 43,000 ohms 1tt
netres 9853 Nrz Ostovo Orinis, i wari
R13 1.6 meachms 4 watt
814 50.000 ohms. 4 watt netres 7853 RIS 0.5 megohms, Volume netres 9853 Control netres 9855 | PI7 | maachma, ½ watt metres 9855 | R18 0.5 meaohm. 4 watt ast R19 2.5 megohm, 4 watt 10368A R20 0.2 megohm, 1 watt metres 9747 R21 50,000 ohms, I watt metres 9746 | R22 320 ohms, 4 watt metres 9745 | R23 100 ohms, ½ watt metres 9744 | R24 0.4 megohm, ½ watt metres 9743 R25 0.1 megohm, ½ watt metres 9742 R26 50,000 ohms, ½ watt ast R27 630 ohms, ½ watt 10054A R28 0.1 megohm, Tone ar 8286Z R29 100 ohms. 4 watt her 8287Z Filter 3149 CI 52 uuF mica Smooth- C2 13-3/ uut Air Trimmer
8243E C3 13-37 uuf Air Trimmer
ا · · ا × × ا× · · × · Stock Code Circuit
ciption. or Part Nac Code No. Description.
JCTORS. RESISTORS. oil, 13-16 metres 9852 | RI ****** I megohm, ½ watt oil, 16-20 metres 9852 | K2 25,000 ohms, 1 watt
| R3 500 ohms. 1 watt
oil, 20-25 metres 9852 | R4 500 ohms, ½ watt R5 I megohm, ½ watt oil, 25-31 metres 9852 | R6 50,000 ohms, ½ watt oil, 31-83 metres 9854 R7 25,000 ohms, 1 watt sil, 75-200 metres 9854 R8 320 ohms, ½ watt oil, Broadcast R9 0.1 megohm, 1 watt 0 kc. 10369A K10 50,000 ohms, 5 watt 13-16 metres 9853 KII 20,000 ohms, 2 watt
D13 43,000 ohms 1 mott
16-20 metres 9853 Nrt 03,000 00001 National National Net National Net construction RI4 50.000 ohms. 4 watt , 20-25 metres 9833 R15 0.5 megohms, Volume 25-31 metres 9853 Control 31-83 metres 9855 | p.17 1 moorthm 1 metr 75-200 metres 9855 | R18 0.5 meachm. 4 watt , Broadcast R19 2.5 megohm, 4 watt 0 kc. 10368A | R20 0.2 megohm, 1 watt 1, 13-16 metres 9747 | R21 50,000 ohms, 1 watt l, 16-20 metres 9746 | R22 320 ohms, ½ watt l, 20-25 metres 9745 | R23 100 ohms, 4 watt l, 25-31 metres 9744 | R24 0.4 megohm, ½ watt 1, 31-83 metres 9743 R25 0.1 megohm, ½ watt , 75-200 metres 9742 R26 50,000 ohms, ½ watt Broadcast R27 630 ohms, ½ watt ) kc. 10054A R28 0.1 megohm, Tone ransformer 8286Z | R29 | 100 ohms. 4 watt Transformer 8287Z ion R.F. Filter 3149 CI 52 uuF mica ion A.F. Smooth- CZ 13-37 uut Air Trimmer
ke 8243E C3 13-37 uuf Air Trimmer
Circuit
Code No.
Code No.
Lu, 2, 3, 4
Lu, 2, 3, 4
Lu, 2, 3, 4
Lu, 2, 3, 4
Lu, 2, 3, 4
Lu, 2, 3, 4
Lu, 12
Lu, 12
Lu, 13
Lu, 12
Lu, 13
Lu, 12
Lu, 13
Lu, 20
Lu, 13
Lu, 20
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 23
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu, 22
Lu
Stock Code Circuit
Description. or Part Nac Code No. Description.
Aerial Coil, 13-16 metres 9852 | RI 🐄 🙀 I megohm, ½ watt Aerial Coil, 16-20 metres 9852 | K2 25,000 ohms, 1 watt
| R3 500 ohms, 1 watt
5 R5 I megohm, ½ watt Aerial Coil, 25-31 metres 9852 R6 50,000 ohms, ½ watt Aerial Coil, 31-83 metres 9854 R7 25,000 ohms, 1 watt Aerial Coil, 75-200 metres 9854 R8 320 ohms, ½ watt Aerial Coil, Broadcast R9 0.1 megohm, 4 watt 1500-540 kc. 103 69A K10 50,000 ohms, 5 waft R.F. Coil, 13-16 metres 9853 | KII 20,000 ohms, 3 watt
| 212 43 000 ohms 1 wett
R.F. Coil, 16-20 metres 9853 N.12 03,000 011113, 1 watt
R13 1.6 meachms. 4 watt
RI4 50.000 ohms 4 watt K.F. Coil, 20-25 metres 7853 | R15 0.5 megohms, Volume R.F. Coil, 25-31 metres 9853 Control R.F. Coil, 31-83 metres 9855 | P17 | 1.5. Megohms, ½ watt R.F. Coil, 75-200 metres 9855 | R18 0.5 meaohm. 4 watt R.F. Coil, Broadcast R19 2.5 megohm, 4 watt 1500-540 kc. 10368A | R20 0.2 megohm, I watt Osc. Coil, 13-16 metres 9747 | R21 50,000 ohms, 1 watt Osc. Coil, 16-20 metres 9746 | R22 320 ohms, ½ watt Osc. Coil, 20-25 metres 9745 | R23 100 ohms, ½ watt Osc. Coil, 25-31 metres 9744 | R24 0.4 megohm, ½ watt Osc. Coil, 31-83 metres 9743 R25 0.1 megohm, ½ watt Osc. Coil, 75-200 metres 9742 | R26 50,000 ohms, ½ watt Osc. Coil Broadcast | R27 630 ohms, ½ watt 1500-540 kc. 10054A R28 0.1 megohm, Tone
Control
lst I.F. Transformer 8286Z R29 100 ohms 4 watt 2nd I.F. Transformer 8287Z Low Tension R.F. Filter Choke 3149 CI 52 uuF mica Low Tension A.F. Smooth- CZ 13-37 uur Air Trimmer
ing Choke 8243E C3 13-37 uur Air Trimmer

612-T & 710-C

Page 8

TUNING CIRCUIT

Page 9

CIRCUIT DIAGRAM

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