Dumont 181 User Manual
Du Mont
3
DU MONT TYPE 180
Twenty-two Tube, AC, Superheterodyne, Television Receiver
GENERAL FEATURES
No expense has been spared in the production of these
receivers and every up-to-date television and radio
development has been incorporated. These receivers are
classed as "Electrostatic and Direct Vision." Electro-static
indicates that the entire deflection system is electrostatic
and since the picture is viewed direct, without the use of a
mirror, lens or other device, it is referred to as Direct
Vision. The latter ensures clarity, brilliance and the widest
angle of vision. Steady, clear cut, black and white pictures
that are large enough for all the family to enjoy at one
time are secured by the use of a fourteen inch cathode-ray
tube which furnishes a picture eight by ten inches
receivers and every up-to-date television and radio
development has been incorporated. These receivers are
classed as "Electrostatic and Direct Vision." Electro-static
indicates that the entire deflection system is electrostatic
and since the picture is viewed direct, without the use of a
mirror, lens or other device, it is referred to as Direct
Vision. The latter ensures clarity, brilliance and the widest
angle of vision. Steady, clear cut, black and white pictures
that are large enough for all the family to enjoy at one
time are secured by the use of a fourteen inch cathode-ray
tube which furnishes a picture eight by ten inches
A separate high fidelity section brings superb
reproduction of the sound channel which is associated
with the picture. A single control tunes both the sight and
the sound channels so the receiver is no more difficult to
operate than an ordinary broadcast receiver, To the above
features add its compact size, minimum number of
controls and simple straight forward layout and you will
have an idea of the first commercial television receiver
which we believe you will find easy to install and service
in spite of the apparent complexity of the subject
Television.
reproduction of the sound channel which is associated
with the picture. A single control tunes both the sight and
the sound channels so the receiver is no more difficult to
operate than an ordinary broadcast receiver, To the above
features add its compact size, minimum number of
controls and simple straight forward layout and you will
have an idea of the first commercial television receiver
which we believe you will find easy to install and service
in spite of the apparent complexity of the subject
Television.
TECHNICAL INFORMATION
Frequency Ranges – Four Television Channels provided, present alignment as follows:
AUDIO
VIDEO
STEP
STATION
SIDEBAND
CARRIER
CARRIER
A
NBC
Single
49.75
45.25
B
CBS
Single
55.75
51.25
C
…… …… …… ……
D
NBC
Double
49.75
46.5
Power Ratings
Power supply 110 to 120 volts, 50 to 60 cycles, 250 watts.
Audio output, maximum 4.25 watts.
MECHANICAL SPECIFICATIONS
Cabinet Dimensions
Height …………………………………… 24 inches
Width ……………………………………. 15 ¾ inches
Depth ……………………………………. 25 inches
Chassis Dimensions
Height …………………………………… 20 ¾ inches
Width …...………………………………. 13 ¼ inches
Depth ……………………………………. 24 ¼ inches
Height …………………………………… 24 inches
Width ……………………………………. 15 ¾ inches
Depth ……………………………………. 25 inches
Chassis Dimensions
Height …………………………………… 20 ¾ inches
Width …...………………………………. 13 ¼ inches
Depth ……………………………………. 24 ¼ inches
CONTROLS
Operating Controls…………………………6
Adjustment Controls……………………….7
Types 181, 182, 183
These receivers have the same operating controls as the
type 180 and therefore will not be covered separately
TUBE COMPLEMENT
Type Purpose
1853 …………… R.F. Amplifier
6J5M ....….…….. R.F. Oscillator
1852 …………… 1
1853 …………… R.F. Amplifier
6J5M ....….…….. R.F. Oscillator
1852 …………… 1
st
Detector
1853 …………… 1st Video I.F Amplifier
1852 …………… 2nd Video I.F. Amplifier
6H6M ………….. 2
1852 …………… 2nd Video I.F. Amplifier
6H6M ………….. 2
nd
Video Detector
1851 …………… 1st Video Amplifier
6V6G ………….. Video Power Amplifier
6J7G …………… 1
6V6G ………….. Video Power Amplifier
6J7G …………… 1
st
Sound I.F. Amplifier
6J7G …………… 2
nd
Sound I.F. Amplifier
6Q7G ………….. 2
nd
Sound Detector and Amplifier
6V6G ………….. Sound Power Amplifier
6J7G ………….… Horizontal Synch Separator
6AD5G …………. Horizontal Sweep Oscillator
6R6G ...……….… Horizontal Sweep Amplifier
6J7G ………….… Vertical Synch Separator
6AD5G …………. Vertical Sweep Oscillator
6R6G ....………… Vertical Sweep Amplifier
2Y2 ..........…….... 4100 Volt Rectifier
5X3 …………….. 1600 Volt Rectifier
5Z3 .....………….. 350 Volt Rectifier
114-9-T .....……... Cathode-ray Tube (14")
6J7G ………….… Horizontal Synch Separator
6AD5G …………. Horizontal Sweep Oscillator
6R6G ...……….… Horizontal Sweep Amplifier
6J7G ………….… Vertical Synch Separator
6AD5G …………. Vertical Sweep Oscillator
6R6G ....………… Vertical Sweep Amplifier
2Y2 ..........…….... 4100 Volt Rectifier
5X3 …………….. 1600 Volt Rectifier
5Z3 .....………….. 350 Volt Rectifier
114-9-T .....……... Cathode-ray Tube (14")