T EVIS i - AmericanRadioHistory.Com

NOW:
TEST SERVICE
12v. AUTO RADIOS
New DC Power Supply
Model C-12
0 -16 Volts from 0 -8
Amperes Continuous
Output. Up
to 12 Amperes
Intermittently
Only 3% Ripple at full load!
Completely variable output,
makes it possible to test equipment
under any voltage input condition.
Provides filtered adjustable DC voltage
for testing and servicing 12 volt
and 6 volt auto radios from AC lines.
Operates electronic equipment used
on trucks, tanks and other mobile
units: low voltage devices. Utilizes
Superior Powerstat Voltage Control
(Model 10) for extremely fine voltage
adjustments.
See Your Nearest Parts Jobber!
MODEL BJ
MODEL B
MODEL N
MODEL NF
Write for FREE BULLETIN!
6 Volts, 1 -12.3 Amps. 5% Ripple
6 Volts, 1 -20 Amps. 3% Ripple
0 -28 Volts, 1 -13 Amps. 3% Ripple
0 -23 Volts, 1 -15 Amps. 1% Ripple
ELECTRO PRODUCTS LABORATORIES
4501 -Nc No. Ravenswood Ave., Chicago 40, III.
CANADA: Atlas Radio Corp., Ltd., Toronto, Ont.
90
For additional information on any of the items described herein, readers
are asked to write direct to the manufacturer. By mentioning RADIO d
TELEVISION NEWS, the page and the issue number, delay will be avoided.
FM -AM TUNER
A new high -fidelity FM -AM tuner,
featuring high sensitivity and pushbutton
selection of a.f.c. action, has
been introduced by David Bogen Co.,
29 Ninth Ave., New York 14, N.Y.
The Model R701 is a 14 -tube unit
which utilizes a cascode r.f. amplifier
and triode mixer to provide increased
sensitivity. It requires only a 3 microvolt
input for 30 db quieting. The unit
has continuously variable treble and
bass controls, a volume control, tuning
control, and a six -position function
selector switch.
DISC CONDENSERS
Erie Resistor Corporation, Erie, Pa.
has a new line of high -voltage disc
ceramicons available which is designed
both for space saving and production
economy.
The standard sizes in the new line
are % ", 1942 ", and 34" maximum diameter.
They have phenolic dipped,
vacuum wax impregnated case insulation.
Leads are #22 tinned copper
wire. Standard d.c. working voltage
ratings are 1000, 1500. 2000, 3000,
5000, and 6000 with a dielectric
strength test of twice the rated working
voltage.
PRINTED CIRCUIT
Circuitron, Inc., 400 Ninth St., Hoboken,
N.J. is now offering a new type
of printed circuit which uses a rad-
ically different method of bonding the
pattern to the insulated base.
The conductive pattern can be run
from one side of the base material to
the other by plating through holes,
maintaining circuit continuity without
the need for eyelets or other hardware.
This permits crossovers, greater
design flexibility, and easy adaptation
to single -dip soldering.
The new "Circuitrons" can be custom-
engineered for a wide variety of
applications. For full details, write
the company direct.
RELAY RACK
An open -face relay rack, which is
designed to accomodate 19" panels, is
now being offered by Insuline Corporation
of America, 3602 35th Ave.,
Long Island City 1, N. Y.
Made of 1/43" steel and finished in
durable black ripple enamel, it measures
38!4" high, 20" wide, and 18%"
deep, weighs 39 pounds, and has 36%"
of vertical panel space.
The rack, designated as catalogue
No. 3913, is intended for radio transmitters,
transmitter- receiver combinations,
p.a. amplifiers and distribution
systems, tape and wire recorders,
laboratory or service shop test equipment,
etc.
SOLDERING IRON
Wall Mfg. Co. of Grove City, Pa.
has introduced a new instant -heat
gun -type soldering iron which does
not require a transformer.
The unit has a light, plastic gun -
grip, heats quickly, maintains accurate
heat, and has a heat -control
thermostatic action which is guaranteed
for the life of the iron.
A switch -controlled spotlight makes
interior soldering easier. The iron
causes no radio interference when in
use. It operates from 115 -120 volts
a.c. or d.c. and draws 400 watts in
operation and 100 watts idling. A free
catalogue sheet is available.
V.T.Y.O.M. KIT
Allied Radio Corp., 833 W. Jackson
Blvd., Chicago 7 has announced a new,
low -cost, easy -to-build vacuum tube
volt - ohm - milliammeter kit, the
"Knight VTVOM."
The new unit has six ranges for
measuring a.c. peak -to-peak volts, six
RADIO & TELEVISION NEWS