The Union daily times. [volume] (Union, S.C.) 1918-current, 1922-04-26
Two Kinds of Noises
Mar Radio Concerts
Interference is Traced to, Static" and
Intruding Amateur Stations.

interference is Traced to, Static" and
lntruding Amateur Stations.
New York, April 24.-With the re
cent spectacular development of the
radlotelephone as a means of com
munlcatlon and entertainment and it's
amazing popularity with the Amefi
can public, experts are now busy de-
vising methods of eliminating the in
terfering noises that often mar radio
concerts.
One of the latest and most effective
of these methods is the scouting "de-
tective' automobile, equipped with a
sensitive wireless set and loop an
tenna, and employed to ferret out in
terfering radio stations.
The problem of static and other in
references that constantly interrup
broadcasted concerts and lectures by
series of strange noises are discussed
IN the May issue of Popular Science.
Monthly, which says:
These radio interferences may
come from one of two sources. MANY
Of them are due to amateurs with
powerful regenerative sets who OPP
crate without understanding their sta
tions. The remainder come from the
most uncomfortable force in the radio
universe-static.
Collision in the Receiver
The real cause of the trouble can
usually be discovered by an expert
enced radio man, but the blame should
rot be attached to any one until it l..
definitely located. In locality where
there are many transmitting stations
signals from them may break up d
concert. The allotment of different
wave lengths to their respective
classes of transmitting stations theo.
retically permits the concert and vari.
Gus messages to go out at the same
time with as little interference as
three trains would create for each 9th.
or if they were all en- route from New
York to Buffalo, but going via the
| Erie, Lackawanna, and New Yorl
Central respectively. In practice, how.
ever, collisions occur in the receive,
that sound like the three trains meet
ing at a common point while running
4 mile minute.
| The remedy, when signals slash, is
to find out where they come from, af
ter all efforts to tune out the intrud
ers have failed. Every sending station
Is required by law to sign its cal
letters to each message by transmit
ting them in code or repeating then
with the voice sothat all who hea,
the station may identify it. If the in
terrupting station does not give it.
call letters, the district radio inspec
cr may be asked to focus direction
finders on it and bring the owner tt
| Justice.
Buzzes From Power Lines.
"a very efficient receiver will alst
trlng in all sorts of huns and buzze.
from electric light and power lines
trolley car motors, and automobil,
magnetos. Violet ray apparatus ma,
he heard at work in neighboring bou
doirs, as may X-rays boring thei,
Paths into troubled human interiors
and lightning-rod agents producing
miniature electric storms. An antenn,
that runs parallel to wires nearby will
pick up current from them and pro
duce noises in the receiver.
"The worst disturber of the ether il
Static Listen in while a thunder
storm is approaching and at the sam,
time watch with the eyes for the light
ming flashes. Do not watch too long
Pull the lightning switch and groun,
the aerial before the storm is over
head.
"The instant you see the flash yo,
hear grumble, growl, or crash in tn,
telephone. This seems to prove tn,
assertion of the scientists that radi,
and light waves travel at the sam,
rate Of speed"