Hudson 63 1936, Mechanical Procedure Manual

Page: 264 / 333

SECTION 22
Page 6
MECHANICAL PROCEDURE MANUAL
3. Remove 4-6/32" speaker screws from around grill on panel.
Tubes:
Tubes should be checked on a standard test panel and con-
form to the corresponding tolerances.
To Remove Receiver from Car :
1. Loosen control cable clamp screws at receiver and remove
cables.
2. Remove the 3-5/6" bolts underside of radio mounting
bracket.
3. Remove antenna, fuse and pilot light connectors by press-
ing inward and to the left.
To Remove Control Head:
1. Pull off tuning and volume control knobs.
2. Remove 3 screws from around dial. These screws hold
control head to instrument panel.
Alignment
The following is a list of performance factors that will be of
value where it is desired to make accurate measurements:
Intermediate Frequency—252 K.C.
Sensitivity in Microvolts—1.
Power Output in Milliwatts—2500.
Power Consumption—40 watts at 6 volts.
Tube Operating Voltages:
Position
R.F. Amplifier
1st Det.-Osc
I.F. Amplifier
2nd Det. A.V C
Power Amplifier
Rectifier
Tube
6D6
6F7
6D6
75
42
6Z4 EF
5.6
5.6
5.6
5.6
5.6
5.6
EK
1.5
3.5
1.5
1.2
0
174.6 EG
1
*
0
*
0
11.5
. . . .
EG
2
1.5
3.5
1.5
0
0
. . .
EG
3
72
72
72
. . . .
174.6
. . . .
EP
174
Det. 174
Osc. 130
174
156
165
F—Filament; K—Cathode; G
1
—Control Grid; G
2
—Suppressor Grid; G
3
—Screen Grid; P—Plate; *—Depends on applied signal strength. All voltages measured
from indicated points to ground. Battery voltage 6 volts.
1. Power supply unit, 2. Variable condenser, 3. Speaker, 4. Tone control, 5. 6Z4 Rectifier
tube, 6. 42 Power tube, 7. 75 Second detector tube, 8. First I. F. transformer, 9. 6D6 I.F.
Amplifier tube, 10. 6D6 R.F. Amplifier tube, 11. 6F7 First detector-oscillator tube, 12.
Second I.F. transformer, 13. Pilot light supply lead, 14. Battery cable, 15. Speaker
transformer.
Figure 2203—Chassis—Top View—Model 650
Figure 2204—Chassis—Bottom View—Model 650