Atwater-Kent Mfg. Co.

Model 165-Q, 525-Q
Socket, Trimmer, Parts

Model 165-Q

26809	Cabinet, less screen
26679	Screen
25745	Name decalcomania
25965	Tone decalcomania
24278	Knob (tuning and volume)
25145	Knob (tone)
25022	Variable condenser
26727	Dial assembly
25692	Volume control, .5 U
25004	Volume control bracket
24327	Shield for T5
34554	Shield for T4 includes A5
36980	Tone control and police switch
25226	Shaft and blade

Transformer

Code No.	Part No.	Name of Part
T1	37080	No. 1 R.F.T.
T2	37090	No. 2 R.F.T.
T3	37110	Osc. T.
T4	37180	No. 1 I.F.T.
T5	37190	No. 2 I.F.T.
T6	37150	Input T.

Resistors

Code No.	Part No.	Name of Part
R1	30340	Red-blue, .1 U, 1/3 W
R2	30390	Red-bl'k, 20,000 ohm, 1/3 W
R3	30340	Red-blue, .1 U, 1/3 W
R4	30380	Red-green, 3,300 ohm, 1/3 W
R5	36430	Blue-yel., 5,000 ohm, 1/3 W
R6	30370	Green, 2 U, 1/3 W
R7	31970	Red-yel., .25 U, 1/3 W
R8	30340	Red-blue, .1 U, 1/3 W
R9	30360	Gray-blue, 1 U, 1/3 W
R10	30320	Maroon, 10,000 ohm, 1/3 W
R11	36240*	Wire wound, 1.03 ohm

*A no 37220 resistor (1.05 ohm) is supplied with set for use with 3 V dry "A" battery
Condensers

Code No.	Part No.	Name of Part
C1	31160	.05 MF, 100 V, NI
C2	31160	.05 MF, 100 V, NI
C3	33930	25 MMF, 500 V
C4	36950	730 MMF, 100 V
C5	27630	.01 MF, 200 V, IND
C6	27630	.01 MF, 200 V, IND
C7	27630	.01 MF, 200 V, IND
C8	21160	200 MMF, 450 V
C9	29890	.005 MF, 250 V, IND
C10	22472	7 MF, 200 V
	34010	Multiple by-pass, J15

Trimmer Condensers

Code No.	Part No.	Name of Part
A4	24495	Single I.F.
A5	31290	Single I.F.
A6	33080	Single I.F.

Sockets

Part No.	Name of Part
24494	6 prong
24492	4 prong
25196	Speaker

165-Q Speaker No. 37170
525-Q Speaker No. 39200

Part No.	Name of Part
26874	Cable and plug assembly (525-Q)
26755	Cable and plug assembly (165-Q)
27128	Magnet
27129	Magnet clamping plate
8188	8/32 hex. nut
9898	No. 6 lock washer
23318	No. 2 washer
27138	Clamping block top
27139	Clamping block bottom
27141	Adjusting screw, 6/32
27142	Cover plate
27143	Mounting bracket
27144	Sound unit assembly, less magnets
27145	Conehead assembly
27146	Coil
27147	Armature
27211	Mount. brackets, pair (525-Q)
27148	Spring
27149	Terminal

Model 525-Q
(For parts not listed below refer to Model 165-Q parts list)

Part No.	Name of Part
26565	Variable condenser assembly
27305	Knob shaft
27450	Osc. T (T3)
26719	Dial light socket
26722	Battery cable with resistor
26519	Dial assembly
26721	Dial lamp (air cell, 2 V, 60 MILS)
26642	Base cover
26569	Knob (tuning and volume)
26571	Knob (tone)
36250*	Wire wound, 1.15 ohm (R11)
26669	Shipping container
26545	Escutcheon nameplate
25691	Escutcheon window
26718	Volume control, .5 U
37490	Tone control switch
26573	Shaft and blade

* A No. 37130 resistor (1.15 ohm) is supplied with set for use with a 3 V dry "A" battery.

Speaker Adjustment: When adjustment is required, put the set and speaker in operation and tune in a signal. Loosen screw A and tighten B, or vice versa, in order to center the armature in the magnet gap. If the armature is not correctly centered, it may strike against one pole of the magnet and cause chattering. If the speaker overloads or chatters only on a very strong signal, turn screw C anti-clockwise. This tightens the armature movement. (In general it is not advisable to disturb the adjustment of screw C.)

Atwater Kent Mfg. Co.

Model 168Q, 528Q
Schematic
Voltage

Total "B" voltage at time measurements were made equaled 135 volts. Tube voltages are taken from -F of each tube, using the 250 volt scale of a 1000 ohm per volt meter. Resistor R11 is used with 2 volt air cell, but is not used with 2 volt storage cell. In model 525Q a 2 volt air cell dial light (80 mils) is connected across the filament circuit.