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RADIO AND OTHER ACCESSORIES
GROUP II
RADIO AND OTHER ACCESSORIES
SECTIONS IN GROUP 11
RADIO
11-1
Section
Subiect
11-A
Radio
.
Page
11-1
Section
Subiect
Page
11-B
Accessories Other Than Radio
.
. 11-29
SECTION II-A
RADIO
CONTENTS OF SECTION 11-A
Paragraph
Subiect
Page
11-1
Radio Description and Operating
Instructions
11-1
11-2
Radio Trouble Diagnosis
11-2
11-3
Radio Adjustments-On Car
.
.
.
.
11-3
11-4
Radio Installation Instructions
.
.
11-5
Paragraph
Sublect
Page
11-5
Radio Alignment Procedure
.
. . .
. 11-13
11-6
Radio Service Parts List-1948
~odeffi
11-23
11-7
Radio Service Parts List-1949
Model
.
11-24
SERVICE BULLETIN REFERENCE
Bulletin No
.
Page No.
SUBJECT
11 -1 RADIO DESCRIPTION AND
OPERATING INSTRUCTIONS
a.
Description
Buick Sonomatic Radios are engineered both
mechanically and acoustically to fit with built-
in accuracy and to make the most of the acous-
tical properties of the car. The installation
consists of a receiver set with built-in speaker
mounted at the center of the instrument panel
and a four-section antenna mounted just above
the center of windshield.
The Buick Sonomatic radio receiver employs
the superheterodyne circuit. The tuner assem-
bly is of the 3-coil iron core permeability-tuned
type. This type of tuner assembly does not use
the conventional plate type condenser. The
8-inch speaker is of either the electro-dynamic
or the permanent magnet type in 1948 models,
and is the permanent magnet type in the 1949
model. In addition to the manual controls by
which any station may be tuned in, five push
buttons are provided for touch-tuning of five
pre-selected stations. An illuminated straight-
line indicator shows the frequency tuned in.
The antenna position is controlled by a knob
located just above the center of windshield in-
side the body. In the straight down position the
antenna rod is held to prevent rattling by a
stop mounted on the windshield division (outer)
molding. The antenna may be rotated to
straight up position by turning the control
knob.
b. Antenna Operating Instructions
In metropolitan
sections,
with strong broad-
casting stations, the radio will operate with
antenna rod in the "down" position. Weaker
stations will require the antenna to be raised
to the "upright" position and fully extended.
The antenna may be rotated from the "down"
to the "upright" positions by turning the con-
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