The northwestern bulletin-appeal., 1924-03-08
Radio status to
be improved by
Battery Service
Statement Corrected Concerning
False Impression of Storage
Batteries.

According to the Electric Storage
Battery Company. the radio public is
laboring under a false impression in
supposing that the WD-11, WD-12
and Uv-199 tubes are dry cell
tubes"
The company states that there Is
no such thing as dry cell tube. ="
ANY tube, they maintain, can be op-
Grated on dry cells. provided enough
Of them are used. But because when
used with 6-volt tubes their voltage
drops so rapidly the storage battery
is used by most fans without ques-
ton.
1T must be remembered" they
state, that the dry cell is essential
ly an intermittent service battery. 1t
was designed primarily to furnish a
small amount of current for ringing
bells, or annunciators and supplying
ignition for gas engines. In this
service the dry cell has q chance to
recuperate or regain its strength.
when a dry cell IS made to light
the filament of a WD-11 or II, cur
rent is drawn from it continuously
for two to four hours a night and
from three to six nights a week. Nat
urally under such conditions, 1t
doesn't take long to run the battery
down.
Weakness Cited.
Recognizing this weakness OF the
dry cell battery and the desirability
of obtaining a more dependable
source Of power for the low voltage
tubes, two new storage batteries Of
low voltage for use with the new low
voltage tubes have been placed on the
market.
The addition of these two new
Exide batteries for radio service is
announced by the Electric Storage
Battery Company. The one is known
as the 1-KZR-5 and the other, the
2-KZR-3.
For WD-l1 or IL tubes, the
1-KZR-5 is recommended. In size IL
compares favorably with the ordinary
dry cell. being only 6 1916 inches
high by 2 5-16 inches wide, by Az
inches long. It weighs but 5 pounds.
Inasmuch as the above tube consumes
but quarter of an ampere at IL to
LIS volts, this battery will heat the
filament for approximately 90 hours,
when it may be recharged in the
same manner as any six-volt battery
the charging rate being 2 amperes.
Other Types.
The other baby battery"-type
2-KzR-3, is designed for use with
UV-199 tube, which consumes six
hundredths of an ampere at 8 to 3.6
volts. This battery is very similar to
the first one. 1t weighs six pounds,
Is 5-32 inches wider, but will heat
the tube filament for approximately
200 hours on one charge.
one has only to try storage bat
teries of this type, after using dry
cells. in order to appreciate the su-
perior reception obtained with the
former.
The dry cell, however, has a place.
In emergencies, when storage bat
teries are not available, the dry cell
Is very acceptable substitute. But
Tor regular use in the home storage
batteries for the radio set far more
preferable.
With the two low voltage batteries
just described, the Electric Storage
Battery Company has complete line
or Exide radio batteries for every
type of tube. For not only is their
six-volt battery-type LxL-ayaila.
bic for tubes like the Uv-2O0 and
2o1-A, but their storage "B" battery
may be used in the plate circuit of
any tube, where it is claimed they
assure a noiseless, even flow of cur
rent that can be obtained in no other
way.