Firestone Tire & Rubber Co. S7428-1 Schematic

Get a print!
Price: $8.00
In stock
Product Information:
Model:S7428-1
Manufacturer:Firestone Tire & Rubber Co. (Air Chief)

Schematic Pages

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

PAGE 10-10 FIRESTONE

FIRESTONE

Schematic , Socket ,Trimmers

Alignment

TIRE Sr `RUBBER CO.

we 11 ???:=. :55m swarms

loo v.

Ott-OFF SWITCH Q
VOLUME CONYROL

LF. PEAK 456 KB,
on All A". m2,

4 TUBE _ 6 VOLT

GENERAL DATA. The alignment oi this receiver requires
the use ot a test oscillator that will cover the frequencies
of 456. 600 and 1400 KC. and an output meter to be con-
nected across the primary or secondary of the output trans-
formers. If possible, all alignments should be made with
the volume control on maximum and the test oscillator out-
put as low as possible. to prevent the AVC from operating
and giving false readings.

CORRECT ALIGNMENT PROCEDURE. The intermediate
frequency tif.) stage should be aligned properly as the
first step. After the LF. transformers have been properly
adiulted and peaked, the Broadcast Band should be

(C)John F. Rider, Publisher

TUBE AND TRIMMER LOCATIONS

LF. ALIGNMENT. With the gang condenser set at miniA
mum, adjust the test oscillator to 456 KC and connect the
output to the grid of the first detector tube (GDBG) through
a .05 or .l mfd. condenser. The ground on the test oscilla~
tor can be connected to the chassis ground. Align all four
LF. trimmers to peak or maximum reading on the output

lROADCAST BAND AUGNMENT. Connect the antenna
to the generator through a 200 MMF dummy and set the
dial and generator at 1400 KC. Align the BC oscillator
trimmer and BC antenna trimmer. Set the generator at
600 KC and tune in the signal tc check sensitivity at this

been damaged. f

point to determine it coils or gang condenser have not

Please note: we carry a wide range of products which will fulfill the specifications above. Please use our search function or browse our products to find what you need!