Stromberg-Carlson 245 Engineering Data

Engineering Data
Stromberg-Carlson No. 245 Radio Receivers
STROMBERG-CARLSON TELEPHONE MANUFACTURING COMPANY
Rochester, New York
ELECTRICAL SPECIFICATIONS
Type of Circuit_
Tuning Ranges-
Number and Type of Tubes-
Voltage Rating_
Power Frequency Rating_
Input Power Rating:
Radio Models Only_
Radio-Phono. Models_
Frequency of Intermediate Amplifier
_Superheterodyne with A. F. C. Electric Tuning
A—530 to 1700 Kc.; B—1700 to 5600 Kc.; C—5600 to 18,000 Kc.
(1 No. 6K7, 1 No. 6A8, 1 No. 6J5, 1 No. 6B8, 1 No. 6H6,
-11 No. 6F5, 1 No. 6C5, 2 No. 6F6, 1 No. 6U5, 1 No. 5U4G
_105 to 125 Volts, A. C.
_25 to 60 Cycles and 50 to 60 Cycles
_ 130 Watts
_ 165 Watts
_465 Kilocycles
APPARATUS SPECIFICATIONS
No. 245-L _50 to 60 Cycles; P-28481 Chassis; P-27385 Loud Speaker
No. 245-LB _25 to 60 Cycles; P-28482 Chassis; P-27385 Loud Speaker
No. 245-M _50 to 60 Cycles; P-28481 Chassis; P-27504 Loud Speaker
No. 245-MB _,_25 to 60 Cycles; P-28482 Chassis; P-27504 Loud Speaker
No. 245-R _50 to 60 Cycles; P-28481 Chassis; P-27385 Loud Speaker
No. 245-RB _25 to 60 Cycles; P-28482 Chassis; P-27385 Loud Speaker
No. 245-P _60 Cycles Only; P-28590 Chassis; P-27504 Loud Speaker; P-27839 Phono. Motor Unit
No. 245-PB _25 Cycles Only; P-28591 Chassis; P-27504 Loud Speaker; P-27840 Phono. Motor Unit
CIRCUIT DESCRIPTION
The Stromberg-Carlson No. 245 Radio Receivers are eleven tube, "Electric Tuning", adjustable high fidelity
receivers and have three tuning ranges. Either "Manual" or "Electric" tuning is easily obtainable by simply ro¬
tating the "Manual-Electric" tuning control knob to the desired position; when the Manual-Electric tuning
control knob is set so that the arrow on the knob points in the direction of the word "Manual", the tuning dial t.
of the receiver is illuminated and when the arrow on this control knob points in the direction of the word
"Electric" the call letters of the six stations which are set-up for electric tuning become illuminated; also,
when electric tuning is in use, automatic frequency control is employed. When it is desired to tune in stations
located in either the Medium Wave or Short-Wave ranges, the electric tuning arrangement is made inoperative.
The electric tuning circuit is arranged so that six favorite stations located in the Standard Broadcast range may
be set-up for selection by means of the push-buttons. (Local and other stations that give the best daytime
Fig. 1. Terminal Layout for Voltage Measurement Chart and Location of the
Aligning Adjustments for the I. F. and Discriminator Circuits.
P-2S502 Form 2266 Issue 1 Printed in U. S. A.