Philco 611 User manual

SERVICEBULLETIN

No.!!4

Specifications

Type Circuit: Superheterodyne, with pentode

output; built in connections for Philco All-wave

aerial; aerial selector built into and operated by

wave-band switch.

Power Supply: 115 volts, Alternating or Direct

Current.

Tubes Used: 1 type 6A7, Detector-Oscillator; 1

type 78, I.F.; 1 type 75, 2d Detector and 1st A.F.;

1 type 43 Output; 1 type 2525 Rectifier.

Wave Bands: Three-(1) Standard (with some

Police); (2) Police; (3) Short-wave.

Coverage of Each Band: Band 1, 530-1720 K.C.;

Band 2, 2300 to 2500 K.C. (2.3-2.5 M.C.); Band 3,

5700-18000 K.C. (5.7 to 18.0 megacycles).

Tuning Drive: Dual gear drive, ball bearing. 50

to 1 ratio for slow-speed tuning. 6 to 1 on main

drive.

Tone Control: 2-position.

Intermediate Frequency: 460 K.C.

Power Consumption: 50 watts.

Speaker: 611-B (Baby Grand): P-28; 611-F

(Console): S-15.

02 o

• • • 'fflJJ.rM611

For Members of

RADIO MANUFACTURERS SERVICE

A PHILCO SERVICEPLAN

Tube Socket Voltages

(Measured at 115volts A.C.)

OUTPUT

75 6-A-7

01 ZND,DET.

\ST.,A.F. DET.-OSC. 25Z5

41V. RECTIFIER.

0.8V,

Fig. 1. Tube Sockets as viewed from bottom.

Above voltages were obtained by using a PHILCO type 025 Circuit Tester (or 048A All-

purpose Tester), using test prods applied to underside of chassis. Volume control at minimum;

dial at 55; waveband switch counter-clockwise (band 1). S-15 Speaker used.

ADJUSTINGCOMPENSATINGCONDENSERS

c.,L.F.,51'0.(ScREW)~====!=cc!:

(NUT)

6-A-7

0 0------G)ANT. sr·o

~'-=--@ANT. S.W.

14OSC.S.W.(M.F.ENO)

'-----Cl3 OSC.H.F.STh.

Fig. 2. Locations of Compensating Condensers

The adjustment of the compensating condensers in Model 611

requires a signal generator covering the broadcast and police

band, and also one capable of producing a signal at certain fre-

quencies in the short wave band. The Philco Model 088 All-Wave

Signal Generator covers these requirements perfectly. An output

meter is also required. Philco Model 025 or 012 unit is recom-

mended. The location of all compensating condensers is shown

in Fig. 2. Adjustment of I. F.

1. Remove the antenna connection from the receiver. Remove

the grid clip from the first detector (type 6A7 tube), and attach

the "ANT" output lead from the signal generator to the grid

cap of this tube.

2. Connect the output meter to the plate and cathode of the

output tube by means of the adapters provided with the "025"

or to the two bottom prongs of the speaker plug. Set it at the

0-30 volt range.

philcoradio.com

Page 2

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SERVICEMANUAL

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Numbers IndicateRelative Positions

of Switch Sections

as Seen from Frontof Chassis

All Switch Sections Shown

In Position No. 3

Fig. 3 - Schematic Diagram of Model 61 I

Note 1: Cathode condenser of 78 tube (lower portion of (@) is .1 mfd.

instead of .01 mfd. shown above.

Note 2: Condenser ® is .00025 mfd. instead of .0008 mfd. as shown above.

Model 611

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Model 611 PHILCO SERVICEMANUAL

Fig. 4

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REPLACEMENTPARTS-MODEL611

Nos.In

Figs. 3 & 4 Description Part No.

® Resistor(5000ohms)(Green,Black,Red).....•..........•.• 33-1001

List

Price

Sl.10

.30

1.10

.20

1.15

0 CompensatingCondenser(Antenna,Standard)............... Part of31-6047} 50

® Condenser(.00025Mfd. Mica).....•....................... 5858 .25

O Resi,tor (20 ohms)(Red,Black,Black)..............•...... 33-1206 .20

@ Oscillat-0rTransformer.............................•.•.... 32-1831 1.50

@ CompensatingCondenser(Osc.L.F. Standard)..........•.... Part of 31-5027 .70

@ Compansat!ngCondenser(Osc.H.F. Standard).............. Part of 31-6047}

<3 CompensatrngCondenser(Osc.S.W.H.F. End).........•.... Part of31-5047

0 CompensatingCondenser(Osc.S.W.L.F. End)...... . . . .. . •. Part of 31-6027

0 Condell3er(.00225Mfd. Mica)...•......................... 30-1055

@ TuningCondenserAssembly............................... 31-1528

0 Resistor(120000ohms)(Brown,Red, Yellow)........•...... 83-1128

0 Resistor(120000ohms)(Brown,Red, Yellow)............... 33-1128

0 Resistor(200ohmsFlexible)(Red,Black,Black). . . .. . .. . . . . 7217

@ Condenser(.1 Mfd.TwinBakeliteBlock)..........•........ 4989-DG

O Condenser(.05Mfd. Tubular)............................. 30-4020

0 CompensatingCondenser(1st I.F. Primary).•....•.......... Part of O

0 1st l.F. Transformer.............................•..•..... 32-1671

0 CompensatingCondenser(1st I.F. Secondary)............... Part of O

0 Resistor(300ohmsFlexible)(Orange,Black,Black).......... 33~010

@ Con<len,er(.1 Mfd.& .01Mfd.BakeliteBlock).•............ 4989-FU

0 Pilot Lamp.............................................. 34-2068

0 CompensatingCondenser(2d I.F. Primary)................. Part of 0

@ 2d I.F. Transformer..•..........................•••...... 32-1672

@ CompensatingCondenser(2d I.F. Sooondary).......•.....•.• Part of O

0 Resistor(1000ohms)(Brown,Black,Red).............•.••• 5837

@ Resistor(2 Megs.)(Red,Black,Green)...•..........•...•.. 33-1025

0 Resistor(50000ohms)(Green,Brown,Orange)...... •. ••. . . • 6098

@ Condenser(.00011Mfd. TwinBakeliteBlock).........•••..• 8035-DU

@ Condenser(.00011Mfd. Mica)............................. 30-1031

0 Condenser(.15Mfd. TwinBakeliteBlock).................. 6287-DU

0 Condenser(.01Mfd. BakeliteBlock)....................... 3903-SU

0 VolumeControl& On-OffSwitch....................•...... 33-5114

.50

.70

.40

3.75

.20

.40

.20

1.35

.20

.40

.16

1.35

.20

.25

.20

.40

.25

1.45

Nos.In

Figs. 3 & 4 Description Part No.

@ Resistor(50000ohms)(Green,Brown,Orange)........•..... 4237

@ 'Resistor (13000ohms)(Brown,'Orange,Orange)............. 3766

@ Resistor(15000ohms)(Brown,Green,Orange).............. 5278

@ Resistor(70000ohms)(Violet,Black,Orange)............... 33-1115

@ Resistor(240000ohms)(Red, Yellow,Yellow)........•...... 33-1097

@ Condenser(.015Mfd.BakeliteBlock)...................... 3793-SU

@ Resistor(.5 Meg.)(Yellow,White, Yellow).................. 6097

@ ToneControl..... . .. .. .. .. .. .. .. . . .. . . . .. .. . . .. . .. . . . .. . 3()..4345

@ Resistor(400 ohmsFlexible)(Yellow,Black,Black).......... 33-3016

@ Condenser(Electrolytie-10 Mfd., 10Mfd.)................. 30-2125

I@ Condenser(.02Mfd.Tubular)............................. 30-4215

@ Output Transformer.............................•........ 32-7395

O Cone& VoiceCoilAssembly(S-15Speaker)................. 3~157

0 Field Coil& Pot Assembly(S-15Speaker)................... 36-3519

O Resistor(20ohmsFlexible)(Red,Black,Black)......•...... 33-1206

@ Condenser(.25Mfd.Tubular)............................. 30-4146

O Resistor(I Meg.)(Brown,Black,Green)............•....... 33-1096

@ Resistor(.5 Meg.)(Yellow,White,Yellow)... , .............. 6097

@ Condenser(Electrolytic,16Mfd.).......................... 30-2124

@ Filter Choke............................................. 32-7018

@ Filter Choke............................................. 32-7452

@ Resistor(15 ohm.s,130ohms-Wirewound).................. 33-3213

@ Condenser(.05Mfd. BakeliteBlock)....................... 3615-SU

Dial Scale............................................... 27-5097

Dial Hub and Set ScrewAssembly......................... 31-1550

Dial SpringClamp....................................... 28-2837

Knob (Tone,Volume).................................... 27-4208

Knob (Waveband)....................................... 27-4219

Knob (Station Selector)................................... 27-4206

Knob (Fine Tuning)...................................... 27-4207

Socket(6 Prong)......................•.......••......... 27-6036

Socket(7 Prong)......................................... 27-6037

Bezel.... ... .. . . .. . . . . .. . . . . . ... .. ... . .. . . .. . . . . . .. .. .. . 28-2928

Bezel

Glass....................•..............•.......... 27-2887

ChassisMtg. Screw...........•........................... W-1496A

ChassisMtg. Washer..................................... 27-4198

Tube ShieldBody...... .. . . .. . . . . .. . . .. .. . . .. . •.. . . .. . .•. 28-2726

Tube ShieldBase.........•....... , .......•.......•...... 28-2725

Page 3

List

Price

S0.20

.20

.35

.20

.50

.20

1.20

.20

1.10

.80

2.80

.20

.25

.20

.75

1.50

.90

.50

.35

.25

.15

.10

.12

.10

.11

.35

.60

1.60per C

.01

.10

.o~

philcoradio.com

Pase 4 PHILCO SERVICEMANUAL Model 611

3. Adjust the signal generator to a frequency of 460 K.C.

Place the receiver in operation with the dial turned to the low

frequency end of the standard broadcast band, wave band switch

to extreme left (clockwise), and have the volume control adjusted

near its maximum setting. Adjust the signal generator attenuator

for approximately half-scale reading of the output meter.

4. The I.F. compensating condensers are located at the tops

of the I.F. coil shields and adjusted by turning the two screws

in top. Adjust condensers @ and ® (2d I.F. primary and

secondary) for maximum reading in the output meter, and then

condensers @ and @ (1st I.F. primary and secondary).

Adjustment of Wave-Trap

1. Connect the signal generator leads to the antenna and

ground terminals of the receiver. Replace the grid clip on the

6A7 grid cap.

2. With the wave-band switch of the receiver still in the

extreme left (broadcast position), turn the station selector to

550 K.C.

3. With the signal generator in operation at 460 K.C., adjust

the wave-trap (D condenser until a MINIMUM reading is

obtained on the output meter. The wave-trap compensator is

reached from rear of chassis.

Adjustment of High and Low

Frequency Compensators

1. With the wave-band switch still at Position No. 1 (broad-

cast band), set the dial at 1500 K.C. Set the signal generator

at 1.5 M. C. and adjust compensators @and 0 for maximum

output. These are the oscillator and antenna "H.F. standard"

compensators respectively.

2. Tune the receiver and the signal generator to 600 K.C. and

adjust compensator@ (screw) for maximum output. This is the

oscillator L.F. standard compensator.

3. Turn the wave-band switch to the extreme right (short-

wave band) and adjust the station selector to 18.0 megacycles.

Set the signal generator at 18.0 megacycles. Now adjust the

oscillator S.W., and antenna S.W. compensators for maximum

reading in the output meter. These are numbered @ and ®

respectively in figure No. 2.

4. Turn the tuning dial to 6.0 M.C., set the signal generator

at 6.0 M.C., and adjust condenser@ osc. L.F., (S.W.) (nut) to

maximum signal.

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A.I G. U.S. PAT. OS:F.

Parts and Service Division August 193~

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