Atwater Kent 155 Schematic

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Product Information:
Model:155
Manufacturer:Atwater Kent
Description:Parts Lists

Schematics Content:

Page 1:

Atwater Kent Mfg. Co.

Model 155 (3rd type)
above serial 7088700
Schematic, socket

IF Peak 262.5 KC

For Parts List see Index

Page 2:

Atwater Kent Mfg. Co.

Model 82-D
Model E-145
Model 155
Model 649
Changes

Model 82-D Replacing IF Bias Resistor No 19830. A new style I.F. Bias Resistor has been developed to supersede the old style resistor. The new style resistor carries the same part no. and is installed exactly like the old style resistor.

Replacing Filament Series Resistor No. 1
Original no. 19850 resistor this is replaced by resistors as shown at right.

Replacing Filament Series Resistor No. 1 in model 82-D
1. Remove original no 19850 resistor.
2. Mount one no. 25980 and one no. 25990 as shown in lower left darwing.
3. Connect these two resistors in series as shown in drawing at right.
Change in model 659 to eliminate radio interference when using phonograph.

New Arrangement
Parts required
I.F. Trans. - 29393
.1 Meg. Res. - 30340
Schematics for #21F unit on E-145 set to improve selectivity

Atwater Kent Radio
Changing early model 155 to use 75 tube in place of 85. This will provide greater output.

Page 3:

ATWATER KENT MFG. CO.

Model 165 Schematic, socket

IF PEAK 262.5 KC.

In late type 165, the 1st-detector bias resistor R2 is 2000 ohms, 1/2 watt
In a few early 165 sets, the tracking condenser C3 is 680MMF.
In late sets, C1 is 25MMF instead of 50MMF.
The additional primary, shown in dotted lines on No. 1 R.F.T., is used in some 165 sets.

Page 4:

Atwater Kent Mfg. Co.

Model 155 (3rd type)
Model 165
Parts List

Parts and Price List for 3rd Type Model 155, No. 32800
Above serial No. 7088700

For parts not listed below, please order by description or name of part and model number of set.

Cabinet complete

Part No. Name of Part
24293 Volume control, complete, less leads, .5 meg
24722
24955 Triple dry electrolytic condenser 8, 8, 8MF, 150 volts
*25317 Variable condenser rotor stator and frame (23 plates)

* In 1st and 2nd type Model 155, the variable condenser is No. 24561 (21 plates).

Transformers

Dia. Code No. Part No. Name of Part
T-1 32210 No. 1 R.F. transformer
T-2 32220 No. 2 R.F. transformer
T-3 32190 Oscillator transformer
T-4 31790 No. 1 I.F. transformer
T-5 31780 No. 2 I.F. transformer
T-6 24897 Output transformer

Resistors

Part No. Name of Part
25309 Cabinet, complete
24293 Volume control and on-off switch (.5 meg)
25022 Variable condenser
25312 Police and tone control switch, complete
25311 Switch base, complete
25226 Switch shaft and blade

Fixed Condensers

No. 24942 Speaker

Dia. Code No. Part No. Name of Part
C-1 30260 50MMF, letter E stamped on washer
C-2 31180 680MMF, 100 volts
C-3 32760 .1MF, 100 volts
C-16 32760 .2MF, 100 volts
C-4 31530 .1MF, 100 volts
C-5 33640 .001MF, 450 volts
C-6 33630 250MMF (double) 450 volts
C-7 23250 .01MF, 450 volts
C-8 27630 .01 MF, 200volts
C-9 27630 .01 MF, 200 volts
C-10 31890 .05 MF, 100 volts
C-12 31890 .05 MF, 100 volts
C-13 31890 .5 MF, 100 volts
C-14 26660 .1 MF, 200 volts
Part No. Name of Part
24942 Speaker, complete
24897 Output transformer, (T-6)
25053 Field coil (2500 ohms)
24895 Cone assembly

Miscellaneous Parts

Part No. Name of Part
24908 Instruction and log card (F-1056)
24733 110-volt cable and plug
24727 Antenna lead (30 feet)
24278 Knob for volume control or station selector
24892 A.C. - D.C. current switch

Parts and Price List for Model 165, No. 34,000

Part No. Name of Part
25309 Cabinet, complete
24293 Volume control and on-off switch (.5 meg)
25022 Variable condenser
25312 Police and tone control switch, complete
25311 Switch base, complete
25226 Switch shaft and blade

Transformers

Dia. Code No. Part No. Name of Part
T-1 32430* No. 1. R.F.T.
T-2 32440 No. 2 R.F.T.
T-3 32450 Oscillator transformer
T-4 32620 No. 1 I.F. transformer
T-5 32630 No. 2 I.F. transformer
T-6 21672 A.F. output transformer
T-7 25191** Power transformer

* In some sets, T1 has an extra winding as shown in dotted lines on page 3. The part number of this transformer is 33820.
** Some early model 165 sets use a 75 tube instead of 2A6 . These sets require a No. 25307 power transformer which has an extra winding to provide 6 volts for the 75 filament.

Resistors

Dia. Code No. Part No. Name of Part
R-1 30350 Black and purple, .5 meg, 1/3 watt
*R-2 33250 Blue, 2000 ohms, 1/3 watt
R-3 28950 Flexible, 160 ohms
R-4 30380 Red and green, 3300 ohms, 1/3 watt
R-5 20980 Red and blue, .1 meg, 1/2 watt
R-6 30340 Red and blue, .1 meg, 1/3 watt
R-7 30370 Green 2 meg, 1/3 watt
R-8 30340 Red and blue, .1 meg, 1/3 watt
R-9 31970 Red and yellow, .25 meg, 1/3 watt
R-10 31970 Red and yellow, .25 meg, 1/3 watt
R-11 32010 Blue, red and green, 500 ohms, 1 watt
R-12 30350 Black and purple, .5 meg, 1/3 watt
R-13 30370 Green, 2 meg, 1/3 watt
R-14 31860 Flexible, 1 ohm, yellow covered

* In early 165, R-2 is No. 30380 red and green, 330 ohms, 1/3 watt.

Condensers

Dia. Code No. Part No. Name of Part
*C-1 30260 50MMF, Letter E stamped on washer
C-2 33660 .0022MF, 400 volts
**C-3 25638 730 MMF, 100 volts
C-4 33660 .0022MF, 450 volts
C-5 32360 .05, .05 and .05 MF, 100 volts
C-6 32350 .05, .05 and .2 MF, 200 volts
C-7 33630 250MMF (double), 450 volts
C-8 33630 250MMF (double), 450 volts
C-9 23250 .01 MF, 450 volts
C-10 27630 .01 MF, 200 volts
C-11 25167 4MF, 20 volts dry electroclytic
C-12 27630 .01MF, 200 volts
C-13 25168 8MF, 475 volts, electrolytic
C-14 25168 8MF, 475 volts, electrolytic
C-15 32740 .003MF, 500 volts

* In late sets C1 is 25MMF, No 33650.
** In early 165, C-3 is No. 31180, 680MMF, 100 volts.

Miscellaneous Parts

Part No. Name of Part
25194 Cloth screen
25213 Cabinet foot
24278 Station selector and volume control knob
25145 Police and tone control switch knob
24323 Power transformer cover (2 used)
24554 I.F.T. shield and trimmer (A5)
19566 110 volt cable and plug
24732 110 volt plug
15404 2.5 volt dial lamp
22683 Tube shield
24549 Dial assembly
31870 Trimmer A6
24495 Trimmer A4
25196 Speaker socket
24492 Rectifier socket
24494 Small 6-prong socket (3 used)
22733 Large 6-prong socket (1 used)
25049 Instruction and log card (F-1059)
25186 Switch instruction tag
25189 Shipping container

No. 34100 Speaker for Model 165

Part No. Name of Part
18870 Field coil (2000 ohms)
21672 Output transformer (T6)
21161 Diaphragm
25179 Cable and plug
25308 Speaker plug (3-prong)

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