3 at Can Be Dene
! 0 Eliminate Static
BELI VE. IT "
e to say that
uro‘ulenl con-
engineers of
3 501119 sat-
nating static
e the begin-
the days of
mun: has ' en the big bug
dio rccep on. This appllu
y to thv’ portions of the
the equator
.is so fierce and
teriai for a
.a: is about i. In spite
pitched code ”ihistle' ’
Low‘msNNA
:MAL; L00”
{.0033 COUPLED RECEIVERS
m ORNO AUOIO .
mouncatflon
TRY mess. DURING
5 ' BAD s'rA'nc
has been devoted to the problem
by the best engineers in the world.
there is still not a single satisfacb
ory static eliminator.
. Even the later developments in
“eliminatore' ’have not been toward
cutting out static in the receiving
set itself. but have been devices work
ing on acoustic principals which try
to filter out the satic noises in the
telephone receivers. All sorts of com-
plicated sound chambers have been
devised for this purpose. Recently an
enormous complicated apparatus
wasdeveloped for the U. 5. Navy
which seems to be fairly workable.
This is a. large sound chamber de-
signed to filter out static noises and
let the high-pitched whistle of a
code signal come through. This ap-
. adorably less response to static than
. . high one,
, will no
work on voice signals. births second
place it costs many thousands of
dollars to build. and also requires
about four steps of amplicatioa to
push s. signal through the mass of
sound tubes and chambers. And
lastly. even '» this doesn't eliminate
static in the receivers—it only mini-
mize it.
. Don't be misled by claims of all
sorts of device to out out static. 5
There isn' t a single piece of appara- f '
ms to our knowledge which. will do
this.
“1th can ,we do? Well. there are
several things which we can do
which will minimize the effect of
static. In the first place. if you have
an outdoor antenna. make it short
and low. A. low antenna gives con-
’ (860 Meters)
18:00 noon—Music. '
, 8' p. Ina—Closing Stock Market
Reporis: Live Stock Market Be-
Dort'l: Ari-lamina: Boston Police
Reports.
7: 00 ii. ill—Meet! of the Ann
Bis” Brother Club E. d
B by Geodry L
Radio Engineer. .
, Since the early days of radio the
crystal detector has/been. used et— 5
tensively in commercial and ms.-
teur work. From the time it re~
placed the old electrolytic detector ‘
up to the time that the vacuum tube
became practical enough to take its
place in commercial work the crys-
tal was supreme.
In search for new and sensitive
'rectiners nearly every known min-
eral has been examined and tried
out. - A great many show rectifying
qualities, many being sopoor. how-
ever. es to be of no value for radio
work.
Coal falls into the latter elsss.
Some minerals are very poor de-
tectors unless s. battery current is
sent through them in one direction.
Carborundum and. some other mina
erals are of this type.
. Some crystals require a very fine
point and a light touch for contact.
Galena. requires a. very fine wire cat-
whisker and a light contact for best
results. Carborundum requires a
heavy'polnt and a. heavy contact.
Certain crystals work well to-
gether. one for the rectifier and the
other for the contact and to aid in
the rectification. Zinctite and Telu-
rlum are of this class. This type of
a. rectifier is easy to operate as a
good point can be easily found land
it is fairly stable in operation.
A great many synthetic or manu-
factured crystals have been devel-
oped and some of them work very
rn.——Ta
Musicale;
Hits by Bernard Eyges and his 0r-
chestra: Talk by George Kamblin.
WOR—NMN
‘ (405 Meters)
2. 80 p. rim—Recital by Freda
Benneche. coloraturs soprano.
. 2: 45 p. n}-——Betty Ross, “Confes-
sions of ant: Interviewer. "
8: 15 p. rip—Recital by Freda
Benneche, coloraturs. soprano.
‘ 3: 30 p. m.—Gothsm Entertainers
of New York.
6: 15 p. in -—Albert E. Sonn in his
weekly talk on "Radio for the Lay-
man. "
6: 50 p. m-i-Mulic while you dine.
W , D. O.
(469 Motors)
5: 15 p. m.-Instruction in Inter-
national code.
but doesn‘t have so
”inch lessening effect on radio sig-
.:.tls. If you use a loop use a small
one: A two-foot loop is about the
fight size. Use twelve turns with a.
Iii-plate condenser across the ter-
minals for tuning purposes. The
small loop acts much the same way
as a low antenna; the response to
static m‘ses is lessened much more
than the response to radio signals.
One of the best things to do isl
to use a. loose—coupled receiver. And
the loose Qupling. as loose as you
can, and still have a readable sig-
nal. This always helps to some ex—
amplification signal ,with detector
alone. do so by all means. Actual
tests have shown that often a. phone
that is readable through the static
on detector alone, is absolutely un-
readable and understandable when
the receivers are placed behind two
steps of audio amplifier.
Radio frequency amplification
will help somewhat. but don‘ t think
that a. radio frequency ampliyr
won t amplify static. It will.
Copyright, 1924 by the American
Radio Relay League, Inc.
Peggy Albion.
7: 45 p. m—Dence program.
their surface.
Of the natural crystals Galena. is
perhaps the most sensitive and effi-
cient. A very light contact must be
made with}: fine wire on the sur-
face of the galens. In a. ton of
gslena are there may he only a few
pounds of good crystals.
It is a good policy to purchase a
number of pieces of galega. to be
sure of obtaining a. good ,one.
Copyright. 1924, by the S. N. L.
No Chance to Save.
(Newcastle Courhr)
An apple is becoming so 'expen—
give that it is just as cheap to call
Popular «Song '
6: 00 p. raw—Children: Hour by
.ments with new books, L.
5:30 p. m.-—“Some Lingo Litera-
ture'z' by Rev. J. Kenning Nelms.
8:45 p. m.—-Song recital.
8: 00 a. m.—-A talk on,- motoring.
9:15 p. m.-Concert by Wat-dines
Park Hotel Orchestra.
9: 55 p. m.—-Time signals: weather
forecasts.
WJY—New York City
(405 Meters)
1:30 p. m.—
lopment of the Clearing House prin~
cipal and its appliance to credit”
by George Hetzel.
7: 45 p. m.—Mabei Schwab, pia-
nlsL
8: 00 p. m.--Mr. F. N. Shepherd.
speaker. American Bankers Associa-
tion.
,8: 30 p. m.—-Lecture' by Glenn
Frank “Current History."
9:30 p. m.—Mabel.Schwab. pia-
nist.
9:45 p.
Brown. 4
10:00 11. m.—-Abraham Znaida,
tenor.
10:30 1). m.——Dance program.
WGY—Schenectsdy. N. Y.
- (380 Meters)
a. m.—Time signals.
p. m.——Stock market report.
p. m. J Produce market
In. — "Golf,” by Inisn
11:55
12:30
12:40
report.
12:45 p. m.—-Wcather report.
2:00 p. m.——Music and one act
play "The Unwllling Bridegroom."
6:00 p. m.———Produce and stockv
market quotations: news bulletins.
6:30 p. m.—Dinner music.
7:45 p. m.——Program by the vocal
pupils of John’Lloyd: A few mo.
L. Iiop-
KDKA East Pittsburgh
(326 Meters)
9:45 a. m.—L*nion Live Stock Mar
ket reports.
klns.
'Credit." "The Deve-.
.I' .. I -. ,(V \ ; ,, . , . _ 1’ _» ‘
'12: lt—«Weetb‘er format: United
' States Bureau of narket reports.
-" 12:15 p. m.'-—Concert.
6:15 p. m.-—~Dinner Concert by the
KDKA Littleflymphony Orchestra.
7:15 p. m.—“In The Whitehonse"
7:50 p. m. “thoroughbred Dogs"
7: 40 p. m.——Nationsl Stockman
and ”Former Frank H. Dole.
8: 00 p. urn—"Influence of Trick
Eradication of The Nation's Live-
W.
8:10). m—Eeonomio Dairy Pro-
duction” by Prof Andrew Borelsnd
8.2011. ire—”Taking Care of the
Baby Chicks". by I. W. Steelman.
8:30 p. xxx—Concert by KDKA Lit
tie Symphony Orchestra.
9:80 p. m.—-Arlington. time sig-
lals. Weather forecast.
11:30 p. lip—Concert.
KYWSIIIGgo. Illinois
(SSG'W)
0:80 a. m.—Late news and ‘com-
ment of the financial and.cornmer-
cial markets. (This service is broad-
cast every half hour during the twen
ty four). '
10: 30 a. m.—~Farm and Home
Service.
11: 35 s. m.-—stie talk by Mrs
‘Anna. J. Peterson.
2: 85 p. m.—-§tudio program.
6; 02 p. m.—-News. financial and
final market. o
6: 13 p.m its—Talk. o
7:00 p. m.»Dinner concert.
7:35 p. m.—Sport talk furnished
by Leo Fisher.
7:45 p. m.~—Tslk cn.“Finance and
Market". by Mr. Thos. Boyne.
8:00 p. m.—"Twenly Minutes of
Good Reading by Rev. C. J. Per-
am.
”8:20 p. m.-——Musiml program.
9:15 p. m.~——Talk by Doctor Dod-
son.
WBZ Springfield. Haas
’ (.337 .hlefcrs)
11:55 a. nth—Arlington time sig-
nals; weather reports; Boston and
Springfield Market reports. .
7:00 p. m.—-Music talk by Robert
Elisha. Stanley Olmsted.
7:30 p. m.——Bedtime story for the
kiddies.
9: 55 p. rim—Arlington time
nals.
sig-
stock Industry" by Dr. W. 31‘. Con- '
0:00 p. replies m
ble Hotel 1511on
6: 80 p.13 m.—-E. E.
gram from City Club.
9:15 p. m.~Concert by,
Gladys Fogg Benedict.
W:
may, Jew vat an. '7
(493 Meters.)
11:00 a. m.—-Minnie W013.
1g, _
11:10 a. m. —- "Making
Shades" by Mrs. Frances A.
11:30 a. m.——Minnie We“.
let.
11:30 a. m.—"New Ways of
in; Sea Food Appealing" by
Ads 13. Vail.
11: so a. xxx—Consolidated 1“"
ket and Weather Reports.
3:30 p. m.-—"Industris,l,
and Civic Changes in the III
by John Hays Baum
y ears"
4: 00 p. m.-——Herbert W
Baritone.
4: 15 p.111. --
Pianist.
Rafael
4:35 p. m—Grace Sue. m
is Reader.
a,
:r ..
4: 45 p. m.—Ilouis Bianca“ no: : .
tis‘ .
4: 55 p. m—Hor‘t Cami :'
Baritone. I .
5:1.0p m—Graee Sage. My; -‘
ic Reader. -
5: 20 p.11! m—Louis Elements. 1‘1"-
tlst.
7:00 p. m.—Mld-Week m .7:
":30 p. m.—-Daily 890.11 m ”'
Thornton Fisher.
7. 40 p. m.—Hnmbono w
of New York.
7:50 p. rim—"Highway MI".
Transportation—Then and New” by
R. .A. Hauer.
8:00 p. m.--—Hambone Om ’
5:20 p. rn.—"The Automobile te-
dustry" by Dudley F. Fowler.
s 30 p. m.-—-The Lets came...
9' .RO p.n1.—Joseph White. Nor.
9: 4'1 p. n1. —Mme.
ias, Violinist.
10: 00 p. m.
Tenor.
-— Joseph
kinda-char-
Who»
10: 15 p. m.—Mme. Irina Zach-.m-
ias \iolinist
10: 30 if. m.-——Earle
Tnckermtnr
taritonc, and Harvey Hindemyer. «V
Tenor.
11: 00 p. in. —- Vincent Lopes and
0995505559me 95.555554511111111.
CYS
Broad and
10191 88.;
Bridgeport
, Monograph Prcc Willi Dinner Sci Free with
fl_.—.—.—‘
Purchase of
$350.00 or over
Purchase of
$750.00 01' 0'ch
Floor lamp Etc: with
Purchase of
$250.00 or over
Purchase or .
$100.00 or over
Silverware Free will».
Store Open
Daily Till 6 E. M.
Saturdays
Till 9 P. M.
.v
l:
(I!
@UR GHIFIS
l0 TIHHE SPRING BMW 5
‘when they’re brought to Hadley’s for solution.
five.
illiami Outfit
’-'t‘.:5hing l i v i n 3
bedroom and
room. m-
."r 7-. $335.00. Special
5 (9)25;
one of 0111‘ Popular Complete «01511511111011 Home 0111
lunxis 0mm ,
kitchen.
living
home-furnishing costs.
. KS
—ccr 011ml
Furnishing living
room bedroom and
dining room. Reg.
priceWSHOO Special
Price .................
Hancock «mm
Furnishing bedroom $fl (65m
and dining room com-
pletely. Regular price
Malta 011ml
$25.00. Special price
Furnishing kitchen. $44815
M
“Na
Furnishing bedroom.
dining rooni,
room.._ and kitchen.
Regular Price, $4000 '
Special Price ........
dining jroom. living
room, bedroom. Reg.
Price $650.,00. Special
Price ................
$34825
m
//
Home-furnishing problems become really happy events
The spring
bride will find in Hadley’s Cdmplete Home Outfits an econom-
ical and satisfactory solution to her worries. And, in addition,
Hadley‘ 3 offers to the home-furnisher, absolutely free, useful
gifts that will materially assist in making her home most attrace
The gifts are illusti'ated above. They are absolutely free
to purchasers—no strings are attached. And they are given free,
whether the purchases are for cash or on Hadley’s Easy Payment
. Plan. It will pay the bride well to see these gifts and our com-
plete home outfits. They both will mean material saving in the
These gifts
I
l
1 Cash 01' Credit ’
whether their purchases be for cash
or on Hadley’ 5 Easy Payment Plan.
free to customers,
l
gleam Milli-900M 0111:1511
Living Room-—
0:18 Rug. “may Gate
Lam. Windsor Chair and
Dining Room——
Bed Room——
and Boudoir Imp.
Kitchen—
_Pencelon Top
1301' more, than three score years, Ckawford Ranges has; ban 9 . 5 m‘m’th econmny 31nd efficiency in the kitchen. Ha‘dley's toniomin‘au afoul:
'” ' ' ranges. Eeyore here‘ 111 an endless ninety of models—gas ranges, do ranges and combination coal and
Consists of W".
Arm Chair or Rocker.
Wig Floor
am
oom- of We! Oblong
“WOBMMMM
Rmmnmmanweksform
m of Bow-m Bed Oom-
-—’1.t.. Mr
Cousin cream-rum
Com
WM”
Melisa
i“Orawford Range Week"
Spccially Priced
$2980"
Terms to Suit
1......” “V ..-.p.
thought an time that paratus however is not practicable the doctor. Well. having sensitive spots all over Technical Syndicate. 11:55 a. m.—-Arlington time sig- FROM 305103 STUDIO “18 0rCh?‘“‘a J
. - _ —-_ . -. ~—..__ : =' 5—“: =.
.11-
W,
Norwalk Chronicler