Evening star., 1923-06-17

transOCean stations must likewise
carry on day and night during the
static season. Special devices are
employed at number of such re
Ceiving stations to reduce the de-
moralizing effects of static as far
as possible but these effects are in
nowise completely eliminated even at
such stations.
At the smaller shore stations and
on the ship stations the only prac-
ticable method that has as yet been
devised to reduce the effects of static
is the employment of a loop instead
on an ordinary overhead receiving
antenna.
Advantage Of Loop.
The employment of loop col
lector will result in greatly de-
creased interference from static
provided the incoming signal waves
are from II direction differing conSid-
erahly from that of the incoming
static waves. However. if the inter
ferlng static waves are arriving at
the receiving station from the same
general direction as the signal
waves no advantage will be gained
cause the static will manifest itself
with the same relative degre of in
tenSlty as the signals.
Within certain restricted areas
static is known to come almost in
vdriably from certain well defined
appears to arrive from all direc-
tion&, especially that which inter
fereS with reception on the shorter
length her-frequency waves.
ordinarily. then, little will he
gained from the use of a loop as re-
CARDS reducing the demoralizing eff
fectS or static, and. as matter of
tact. the ordinary overhead antenna
IS almost invariably used by radio
operators at the low power and me-
dunn power stations, where other
than the extremely long-lengtb low
frequency waves are employed.
Worse ON Long Waves.
As rule. static encountered when
the receiving station equipment is
tuned TO the long length low-fre
quency waves is more prevalent and
more intense than that encountered
on the shorter-length higher-fre-
quency waves. IF the radio fan finds
static Troublesome on the hroadca st
waves. he can take il for granted that
the radio operators are encountering
relatively far greater difficulties on
the waves employed for radio teleg-
raphN.
During the static months of June,
July and August. the job OF the aver
age radio operator is to daily CON
centrate his mind. for intervals of
from four to eight hours. on what
usually are only faint threads of
signals coming in from distant sta
tons. to the exclusion of the con-
giomeration Of the louder sounds
caused by static
No relief can be had from amplify-
ing the strength of the signals. be
cause the louder static interference
Will also be amplitied proportionately
and TO increase the intensity of these
sounds would often make them un-
hearable TO the radio operator
No one other than a professional
radio operator who has been engaged
i'm daily radio operating duty through
out one or more static seasons can
realize the extent of physical ex-
haustlon that results from these daily
periods of nervous mental strain
To the professional radio operator
at least, the outstanding figure in the
entire radio world will be the man
or woman who eventually produces a
practical workable static eliminator.
device which will eliminate the
effects of static without impairing the
strength or quality of the incoming
signal.
copyrighted, 1928 @1st Century Press