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RADIO AND OTHER ACCESSORIES
RADIO
11-15
screws indicated in the Table of Alignment
Specifications-1948 Models.
*Before making this adjustment turn core
screws J, R, K by means of a bakelite screw-
driver, so that the rear end of the
cores
are
1
1
:
YI
6"
from the rear or the coil form. The pur-
pose of this adjustment is to set the cores at
the correct starting point with respect to the
windings.
**Cores J and K are adjusted by means of a
bakelite
screwdriver
through the rear end of
the coils. There must not be any metal in part
of screwdriver inserted in the coil.
***Should it be necessary to calibrate the
pointer after this adjustment, tune signal gen-
erator to 1300 KC and
the
receiver to the
signal. Loosen dial cord pulley set screws and
adjust pointer to 1300 KC. Re-tighten
set
screws.
Adjust trimmer G to match car antenna (at
approx. 1400 KC) when radio is installed
(par. 11-3).
h. Tabulated Alignment Specifications-
1949 Models
•
These
alignment
specifications apply to 1949
radios bearing th
e
following numbers.
Radia Madel
Receiver (anly)
Car Series
Number
Part
Na.
50-70
980782
7256204
Output
Meter
Connections.
. . .
. .
Across Voice Coil
Signal Generator Return
.
.
To Chassis
Dummy Antenna
.
. .
In Series with
Generator
Volume
Control
.
.
Maximum Volume
Tone Control
Treble
Generator
Output
Minimum for Readable Indication
See
figure
11-16 for location of adjustment
screws
indicated
in the Table of Alignment
Specifications-1949
Models.
TABLE OF ALIGNMENT SPECIFICATIONS-1949 MODELS
Series Cando
Signal
Tune
Adjust in
Steps
ar
Connect to
Generator
Receiver
seq. far
Dummy Ant.
Freq.
ta
max. Output
1
0
.1
mfd.
6SA7 Grid (P in #8
)
260 KC
High Freq
.
Stop
A
,B ,C,D
2
0
.000068
mfd
.
Antenna
Connector
1615 KC
High
Freq.
Stop
., E, F, G
3
0.000068 mfd.
Antenna Connector
1430 KC
Signal
G
en
.
Signal
J, K
4
0
.000068
mfd.
Antenna Connector
1615 KC
High Freq
.
Stop
F,G
5
0
.000068
mfd
.
Antenna Connector
1000 KC
Signal Gen. Signal
L
**
*Before making this adjustment (Step 2) check
the mechanical setting of the oscillator core
"R". The slotted end of the core should be 1
1 0/ 1 6"
from the mounting end of the coil form. (This
measurement is readily made with a suitable
plug from the mounting end of the coil form).
Core adjustments are made from the mount-
ing end of the coil form with an insulated
screwdriver, and core studs should be sealed
with glyptal or household cement after align-
ment.
**"L" (Step 5) is the pointer adjusting screw
on the pointer connecting link. Adjust so the
pointer reads 1000 K.C
.
With the radio installed and the car antenna
plugged
III
adjust the antenna trimmer "G"
(see sticker on case) for maximum volume
with the radio tuned to a weak station near
1400 KC (par. 11-3).
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