Evening star., 1936-10-24

the sending Station. W3XE1. At the
left of the driver, directly under the
steering wheel, is the receiving equip
ment. that part of the mechanism
that receives messages from the send"
ing Station WPDW. radio transmit.
ting station of the Metropolitan Pc.
Ice. BY manipulating a small switch
under the steering wheel the opera
tor can tune in headquarters mes
sages or tune them out.
While it has nothing to do directly
with the exchange of official mes
sages. it is interesting that Lieut..
Kelley's unusual zest for all things
having to do with radio has caused
him likewise to equip test car No. /
with one of the finest toned radios
We have heard anywhere. This IS
controlled by entirely different ap.
paratus, and the loud speaker is di.
rectly above the head of the driver
of the car.
Lieut.. Kelley says that it will cost
$500 to equip each separate scout car
with the tWo-way sets. Maj. Brown
expressed his desire, should subse.
quent experiments prove satisfactory
in every respect, to equip at least one
scout car in every precinct, and his
later request for a congressional ap.
preparation will be based upon this.
A CCORDING to Maj. Brown, who
lately has returned from Boston.
that city is now experimenting with
two-way radio system for its police
department, but they are still using
the one-way system. Newark, N. J-
has interested itself in the develop.
ment of two-way system to the ex.
tent that they have conducted expert.
ments along this line for some time.
But it is likely that Washington will
be the first city to adopt officially
this advance method of communica-
ton, as this city is now far in adj
vance experimentally of other cities
in the United States. Maj. Brown
makes it clear that this progress is
due entirely to the interest and study
and painstaking work of Lieut.. Kel.
ley, who, in cooperation with Cow
ernment agencies and officials of a
national electric company, has car
ried through his experiments to this
highly satisfactory point.
Today messages can be sent from
the test car from any point within a
radius of Az miles from headquar.
ters. There are some technical diff.
culties still to be ironed out, but these
are for the most part atmosphere"
problems. With a number of cars
similarly equipped, all in commune
cation with a central source, much
interference will have to be overcome.
and this is a real problem, Lieut..
Kelley points out. Likewise blind
spots" will have TO be eliminated.
The lieutenant proposes to tackle this
complication by means of an air.
plane. A plan whereby an airplane
can circle over the city while several
cars fully equipped for two-way serv-
ice cruise the city will be evolved, to
the end that blind or dead spots
can be located and overcome.
Just as he is responsible for the
original specifications of the two-way
broadcasting system from scout cars.
and the entire set-up. so will it be
up to Lieut.. Kelley to meet and con-
uuer future problems having to do
with the use of the system in Wash.
ington.
Special instruction to police officers
who man the newly equipped cars will
no doubt be necessary. Maj. Brown
states, and while it is still early to
outline plans along this line. spe-
cial course will be prepared later for
those responsible for operation of the
new sets.
When they are actually in daily
use in the city Washington will be in
the vanguard in modern methods Of
combating crime.