Sooner or later most listeners
' come to the time when they want
to try operating their sets on a loop,
either in an effort to avoid an out-
side antenna. or for using the direc-
- :tional prOperties or the loop to help
. in cutting out interference.
._.. There are two kinds of loops usu-
$57!. all! employed in broadcast recep-
11;; tion._0ne is the spiral-wound. illus-
LLZ; trated in Fig. 1. and the other is
":3 the "box’ 'type. illustrated in Fig. 2.
'5 ' It does not matter particularly which
gape is employed. The spiral type
has the more pronounced directional
ltul if the loop is desired for its di-
‘“ hand the spiral loop, for
a,» than
2:;
” effect. and will be slightly more use-
.i rectional qualities. On the, other
-_ a given
“isize. will require more turns
“w will a box.type of the same outside
1‘ dimensions. As far as signal strength
1 is concerned there is no choice be-
tween the two. \V‘ith regard to ease
' of construction, the spiral type will
3 probably be the easier for the aver—
5 age listener to make. -
With any loop, the greatest sig-
~'-! nai strength will be had when the
7 loop is pointing toward the trans-
? mltting station.
' As to the proper size: The small-
' er the loop. the less energy it will
-f‘ pick up: the larger it is the more
' energy it will collect, and the louder
will be the signal. It is, then. a good
idea to get as large a. loop as con-
veniently possible. In our drawings
we show loops which measure 30
inches on each side. This will be
- found to be a. good average size.
Construction: The loop frames
may be well dried
wood. or may be bakelite. formica.
radian or other insulaalg material
The wire is preferably singlevstrand
severed or
' . enameled, double-sill:
' The turns
double-cotton covered.
.; How a L00?Aerial is Made
And Attached to Set
a nd paraffined ‘
should be spaced about three-six-
teenths or a quarter of an inch
apart.
To cover the broadcast range
with a 23 plate condenser. the spiral
loop should have about 15 turns.
while the box loop may have ten
turns. The ends of the coils are used
for leads. and connected to the set
as shown in Fig. 3, the variable
condenser being the only tuning
control. Owing to the fact that dif-
ferent makes of condensers vary
considerably it may be necessary to
add a few more turns than we have
specified. This is easily done if a
trial shows'that the loop will 'not
tune high enough.
Notice that in Fig. 3 we have
shown a loop connected directly
ampli-
to a. detector and two step
tier, without employing radio fre-
quency amplification. 0! course ra-
dio frequency'amplification is desir-
able when working with}; loop. but
it is not ncccsary. A'slmple regen-
erative detector and two-step am-
plifier will prove quite satisfactory
as a 100p receiver over moderate
distances. Concerts may be picked
up‘ with loudspeaker volume from
stations 150 to 200 miles' distant
with such a set under favorable con-
ditions.
It will also be noticed that we
have‘shown a possible “ground'
connection. at "A" in ~Fig 3. Ground-
ing the filament side of the loop will
give noticeably increased signals.
and since a ground of some sort is
usually quite easy to obtain, it
would be a good idea to try this out.
Remember, however, that When we
' the loop. we also dcstrop
about No. 18 in size, and may be
"ground'
much of its directional character—
istics. ’
Copyright. 1924. by The American
Radio Relay League, Inc.
TH L'RSDAY.
‘Daylight Saving Time.
’W'EAf—New York City—192.
11 a. lit—Musical program.
‘ 11:10 a. m.—Talk— by Mrs. Francs
, A. Harris.
' 11:30 a. m.——"Salads."
11:50 a. m.——Market and weather
‘ . reports.
4 p: m.—Bruce F. Young. tenor.
4:1.) p. m.—lssay Lukashezsky.
yiolinist.
4:30 p. m.—Bruce F. Young tenor.
, 4:45 p. m.—Issay Lukashezky.
. violinist.
17 7 7 p. m.—Mld-week services.
7:30 p. m.———Sport talk by Thorn-
ton }‘isher. .
" m.—Fred Ruzika, violin-
' 1:40 p.
‘ ist.
- 7:50 p. m.—Atlas Mixed Quartet.
8:20 p. m.—"Efl:ect of Elections
l .
- on Busmess." Dudley F. Fowler.
8:30 p. m.—Th8 Kaltenborn String
3- Quartet.
; 9:30 p. m.—-"Original Radio Girl"
1-5. entertaining.
2. is 9:45 p. m.—Fred Buzika. violin—
- . t.
'l if
“7-,. '1‘" 'l-l‘l‘ll': l~‘ [ill/YIEJH £1 {"11”
10 p. m.—Howard Gilbert. tenor.
and Anca Seidlova, pianist
'\"JZ—-.\'ew york CilL-i-‘h't
1 p. m.——Orchestra selections.
2 p. m.—.\'ew York Board of Edu-
cation program.
3 p. m.—Afternoon auditorium
concert.
4 p. m.—Baseball scores every a:-
teen minutes. '
4:05 p. m.—Eleanor Gunn'e tash-
ion talk.
4:10 p. m.—"’1‘he Romance of Fish
Marketing."
4:23 p. m.—\‘Proper Nutrition tor
Children."“‘iniired Stuart Gibbs.
4:45 -p. m.—1-‘ashion talk. .
5 p. m.—Emeline Basso. soprano.
5:30 p. m—Market reports.
7 p. m.—l.'ncle Dave Cory's Jack
Rabbit Stories.
7:20 p. m.—“Financlal Develop-
ments of the Day."
7:30 p. lll.—"Stamps." E. 1%. Po!-
er.
7:45 p. nah—Harry J. Cnflrey. ten-
or. ‘
8 p. m.—"Problems of Crime."
Dr. Henry P. Fail-child.
8:30 p. m—Vi’anamaker organtre-
cital.
9:15 p. m.——"Current History."
Robert McElroy.
9:35 p. m-Bose Covello, soprano.
10 p. m.——“How to do the Euro-
pean Art Galleries," Miss M. Rose
Collins.
,. 10:30 p. m—Dance Orchestra se-
, lections. , .,
‘ ‘WJX—New York Qty—403
7:20 p. Ira—Talk by Karl H. We-
'~‘.W:-ll=mtn;
1!“! W W.- M‘: 73””;
1:45 p. its—Max Katina. tenor;
nfim‘ .V
“VHS—New York City—360
2:15 p. m.—congs and piano se-
iections.
4:45 p. m.—“Origina1 Charleston
Five."
9:30 p. m.—1-larry Hock Enter-
tainers.
9:40 p. m.—Dance Music.
10 p. m.—Operatic and classical
program.
11 p. rim—Victor
tone.
11210 p. m.—-Hatsu Kuma. Japa-
nese prime. donna.
11:15 p. m.—Program to be an-
nounced.
11:40
pianist.
11250 p. m.——Ross Fowler.
tone.
\V’ilbur. bary-
p. m.—Dorothy Clarke.
bary-
‘WOBF-Newark—ioa
2:30 p. m.——Joint program of Hel-
en O’Shea.
2:50 p. m.—Bits
"Vogues of 1924."
3:30 p. m.—l-ielen O’Shea. sopra-
no. and \Villiam Burke. tenor.
6:15 p. m.—Albert E. Sonn. “Ba-
dio for the Layman."
6:25 p. m.—l~‘rank Dailey's dance
orchestra.
7220 p. m.——.Resume ot the day's
sports. '
‘WAAM—Nevmrk—2os
11 a. m.—Instrumental and vocal
numbers.
11:45 a. m.——Ada Bessie
talk to housewives.
12 Noon—:Luncheon concert.
1 p. m.—Musical program.
7 p. m.-—Lillian Spitzer. pianist.
7:15 p. Ira—"Abraham Lincoln."
Elizabeth Burt.
7:30 p. m.—Piedmont Trio. seren-
aders.
7:45
prano.
8:15
tainer.
5:45 p. m.—Weekly sport talk.
9 p. tin—Times Square Entertain-
ers. “
9: 15 p. m.—Rev. Dr. Arthur W.
Brook‘ vocational guidance expert.
9:30 p. m.—E. M." Shoemaker.
"Superheterodynes' and Their Con-
struction." - ,
9:45 p. m.—VtctorrWilbur. bary-
tone. and Joseph Macy. pianist.
10 p. m.—Charles J. Sanders'
dance orchestra. ‘
10:45 p. m.——Charles J. Sanders'
Orchestra. _ '
'WBS—Newark—soo.
11 a. m.—-News for the farmer.
11:10-12—Dance‘ music.
1-2:15 p. tin—Popular songs and
dance music.
7:30-8 p.
singing.
8 p. tin—Martin C. DelaneY. ten-
or.
twnan-mnsddmm—sos
11:45 a. m—Daily'almanac.
12:02 p. m.——0rgan recital.
2 13. Ila—Arcadia Concert Orches-t
tra: “The Market Basket." Mrs. An-
and hits of
Swan.
p. m.—Chrlstine"Balfour. so-
p. m—Lucine Wilson. enter-
-m.—Jimmy Shearer.
4:80 p. Ila—Women's club hour.
5:45 p. m.—Be.leball results.
7:30 p. m.—Dr_eaml Daddy with
11 a. m.——Grand organ recital.
11:30 a. m.-—-Weather forecast.
13 Noon—Luncheon music.
12:65 p. m.-—'rime 5131111-
4:45 p. m.-—Grand organ and
trumpets
5 p. m.—Bport.s results and police
reports. _
11:02 p. m.—Weather forecast.
wgc—WASHINGTON-AOO
8:80 P. M.——Song recital by Lu-
cian Marsh. ‘
8:45 P. M.—Dance program. .
9:30 P. BIL—Song recitalsby Eliza-
beth Dayton. lyric “pranc-
9:45 _P. M.—"The Question Box.”
10 P. M.——Time signals by Eliza-
beth Dayton. lyric soprano.
WSD—A'I'LANTA—dao
6 P. M.—Musical program.
WWI—MIAMI, FLA—288
9310* P. M.—Feature night
specialties.
WJAXWH’O
- 8 P. his—Concert. by the Singers'
club and Liddicoat's banjo club.
ws. T—CINCINNATIA—aoo
7:45 P. M.——Chimes concert.
8:15 P. M.——Orchestra numbers.
WCX—DETROIMI'I
:80 P. BIL—Orchestra selections:
Jean Redd. soprano: ”Waldemar
Engberg, basso.
10 P. M.—-Dance music by Jean
Goldkette's orchestra.
11 P. M.-—Orchestra program.
\VLAG—MIS N EAPOLIs—417
12:35 A. M.——-Surprise Hour.
3 P. M.—Woman'e club hour.
3:40 P. M.——-Dayllght concert.
,5 P. M.-—-Magazine reading.
6:30 P. M.—Children's hour.
7:15 P. BEL—Dinner hour concert.
8 P. M.-—Farm lectures.
KY‘v—CmCAGO—bso
3 P. M.-—"Twenty Minutes of
Good Reading." the Rev. C. J. Por-
nin.
5:20 P. M.—Muslcai program.
WMAQ——CKICAGO—449
s P. M.—-—'1‘alk by Roy Munger.
8:40 P. lit—La Salle orchestra.
9 P. M.—Lecture from University
or Chicago.
9:15 P. M.—Church choir.
WDAP—CEIOAGHGO
8 P. M.—Dlnner concert. Drake.
9 P. M.—-Organ recital; ensemble
and quartet.
11 P. ILL—Jack Chapman's
chestra. .
- KPAF—DENVER—soo
9:30 P. ILL—Evening musical pro-
gram.
WM—pmas—ue -
9:30 P. M:—Mra. J. P. Boone
and musical talent.
tr12 Isl—The Circle Theatre orches-
a. ~
W'BAP—FOR’I‘ WORTH—476
8:30 P. M.—-Concert by Frank
Agar_ vocalist.
10:30 P. lit—Concert.
KPO—SAN FRANCISCO—423
5:30 P. M.—Musical matinees.
7:30 P. M.—Rudy Selger's orches-
ira.
8:30
stories.
10 P. M.‘-—Rudy Selger’s orchestra.
. J. A. BIL—E. Max Bradfleld's band.
,' OKAC—MONTREAL—dso
4 P. M.—Weather, news, stocks,
music.
8:30 P. M.—-—Speclai concert and
talk
‘WGR—Bnflalo—Ii.
11:45 a. m.—Weather forecast.
12:30 p. m.—0rgan recital.
2:30 p. m.—Conccrt by radio deal-
era.
6 p. m.—Chamber music recital.
7:30 p. m.—Dlgest ot' the day’s
news. baseball scores.
9:45 p. m.—"Stone," by Buffalo
players.
of
01’-
P. M.—Chlldren’s Hour
Leaky Sockets 'Are
Cause of Trouble
A very common source of trouble
in all radio receivers. and particular-
ly in the reflex set. is in the tithe
sockets. and the contact made be-
tween the tube prongs and the con-
tacts within the socket.
~Beware of the “mouldedi mud"
type of socket that is constructed
of a composition of coal dust. lamp-
black. and shellac. This material
can be readily detected as it will
soften under heat, can be easily cut
with a. knife. will break readily it
dropped. and it rubbed on a piece
or paper will leave a black mark.
A socket of this kind will allow
the radio currents .to leak, across
from grid to plate the same as if a
frid leak were connected across
causing distortion and a. loss or vo-
lume in your receiver.
Another source of trouble with a
great many receivers is caused in
the present day combination of
tubes and sockets. The majority of
solder on the tips to provide the con-
tact with the socket springs and the
elements or the tubes“
from each element of the tube,
tube and into the small brass tube
forming the contact prong on the
metal base or shell of the tube A.
drop oi: solder is placed on the end
of the bass tube thus soldering the.
wire to the prong and at the same
time forming a 'tip' on‘the prong.
Solder S composed of lead and
tin. This material is soft and a great
deal or it wipes of: onto the brains.
bronsen or nickel finish metabofjtb'e
contact spring in the socket. 'When
lead is exposed'to'the" air it forms
a substance called 3W?Okid¢”’ '
a great deal of trouble. Ciean‘your
tube and socket contacts of! well at
frequent intervals. Better still se-
cure a type of socket that makes a
wiping contact fit): the side; bt‘the
tube prongs} as well u the 7’ solder
tipatthebottom. 5‘ ' ' ‘
commas»:
ill-hobs
tube bases 'have brass prongs with I
There are small wires that come .
through the glass at the base of the -
This lead oxide _collects_ on the -
contacts of the‘mket and ': Ginsu '
”8.17.15. l
0
Entrance
values—4 Only 2 days more
_ Yes .men—these are“ 7
Big, new added
l. r3311), S, suits} for $26. '
' '1lv‘“'
They ar
°- . . . They have, all: 5
' the'featu'res that
l We have told you
so much about—
they give you all
the double serv:
ice because every
" 3 of trousers— they
‘ are in fact the
suits that we sell
regUlarly for $35.
in all thewanted new
Spring fabrics—They are carefully
tailored from greys and tans and
light and dark. mixtures and the
popular pencil stripes.
There are all sizes. This is not
what may be termed a special sale
item but. our way of colebarting
our Anniversary by selling-you .a
real $35. D. S. suit foro‘nly $26. .,
I
'Jtfllic’i—f. .
Main floor. rear.
Steel folding cots,’
for cottag
..
e or home $2.95
a'a—
- {Tubular frame and legs, folds flat, finished in grey,
6 ft, 4 inches long, legs fitted with round pegs to slide
easily. $2.95
Mattress to fit thesc'COts,
one, $3.25 . Third floor; rear.
* Lovely cut glass
at half price
a
tufted 'covcrc'd with pre-
Han’d ’cut glassware—big assortment of heavy cot-
{tlngs on clear Crystal blancks—bon bon "dishes, spoon
I
i
l
l
l
l
I
l
l
I
l
l
I
fvases, toilet sets, $4.95 . . .: ,
Ti;4_ in. vases, handled baskets ahjd
i
. For only $1. {5
trays, pin'trays and 5 in. nappies for $1.
to in. vases, handled napplies, bonbon‘ dishes and
8 in‘. vases for $1.45
for $1.95 _ _
Celery 'dish'es, berry bowls, mayonnaise sets
compots and 10 in. vases, $2.45 .
: Compots, mayonnaise, largenappies and butter tubs
and
_ Berry. bowls, celery dishes, han'dle'd b'ask'ets, sugar
,and cream sets, footed compots, and 12 in. .vases, $2.95
' Berry bowls, fem dishes, orange bowls, 12 in. yases,
celery trays, roll trays, $3.95
Footed bowls, ice cream trays, 9 in‘. bowls, flower
Footed rose bowls,
wel boxes, $6.95
. Light cut glass waTeé-San’dwlcli‘plafes, tracks? and
cheese dishes, flower bowls, candy jars, '12 in. vases, foot-
icd cake dishes etc, large showy pieces in this assortment
- e;
2 Fourth door. center. ,2 , . _
‘ Hair goods section ,
offers: for this week
é...
Switches. I14 inches long fine wavy hair for $4.95
the head,
' Third floor. front. ‘
95:25 _
é
Robb don’rls' for all. around
{I} - Switches 'of any hall: in all shades exdept grey, {20
x plies ion .for $2.95 ‘- :-«
3.: tells
r. .e.—.l’
V' : Golfeatllilslasts Willllketliese -
MEn’s";golf stolklng‘s—Englisbrnakoé-all wool: is
> any 'four 'Argyle club
(“”11“
"‘2- ,
‘5,
I , : . -: ”tailliglxflf‘fi‘eu
Golf outfits
5.. Regular 1:
price. 56-, 1
53""-
lasSCli'téd colorswiiliifancyiops iriibreei special lots. Reg: '
if; for $135. ' Reg. $2.‘f‘or‘ $1.59. . Reg. 31.715, _'fo‘r
' consisté of cahvi'ssbi’g (stallions of
rice; '_o_f. outfit commie.
.Wm- gm.
. \.
Oil-M
Anniversary
on 2nd floor
Children‘s middle. khaki
can with short sleeves sizes
6 to 14_ yrs Reg $1.25 for 79¢
Children’s knickers of
khaki to match middies sizes
6 to 14 yrsRe'g $1.50 for 79¢
Play sultan—khaki middies
and bloomer or knickers siz-
es 3 to 6 yrs Reg $1.75 a set
$1.29 ‘
Girls dresses—fancy dot-
ted voiles, some trimmed
with fancy ruffles. some with
panels sizes 6 to 14 yrs Reg
$3. for $2.35
Clio corsets made of flesh
brocade with two pairs of
heavy hose supportsers Reg
$2. for $1.45
Women’s dressy hats fine
silk and Canton crepe in
newest colors Reg. $10. $12.-
50 and $15. for $7.75
Ca‘..6‘:.lier and Pirette hats
Our Reg $7.50 hats for $4.85
Crepe hat: with pretty
flower trimmings—all new
summer colors Reg $5 to
$6.50 for $3.85
Coats for women sport
coats and dressy coats Rex:
$35 and more for $24.50
Reg $19.50 and $25 for
$16.50 .
Dresses for women flan-
nels, crepe de chines. 'crepe
satins, Russian crepes lace
or bead trim and sport mod-
els Reg $19.50 to $25 for
$14.50 ' -
Finer dresses of fine fab-
rics and newest styles Reg
$29.50 to $35 for $23.50 '
Silk skirts dressy looking
of fine Russian crepe in
heavy crepe de chine, pleat-
ed models in tan grey white,
etc Reg $7.50 and $8.50 for
$4.50.
Anniversary
on first floor
Women’s shoes—large 'as-
sortment—ox ords and
pumps Reg $6 $9. $4.90
Men's shoes—low or high
Reg $7.50 and $8.50 for
Children's a ll 0 c s—Reg
$1.25 and $1.50 for $1.
Women‘ ’3 stockings—silk
and fibre many shades that
are popular Reg $1.95 for
$1.59
Children’s stockings—7-8
length stockings of mercer—
ized lisle, medium weight
with fancy top cuff Reg 50c
for 390
Women’s vests or bodice:
Reg 35c for 2 for 25¢
Women’s silk bodices
talian silk in pink, peach or
orchid Reg $1.7 5 for $1.35
Women’s step-ins Italian
silk pink Reg $2 for $1.65
Women’s gloves Milanese
silks with French cuff ' or 16
button in popular shades
Reg $1.75 and $2 for $1.39
Men’s negligee s h i r t s
white poplin and pongee
with attached collar or
neckband Reg $2 for $1.55
Men’s socks fibre silk
Lwith lisle top and sole some
drop stitch Reg 50c for 39¢
Men's neckwear four-in-
hands of fine quality silk
Reg 75c for 59¢
Pearl necklaces 30 inches
long, graduated, beads, in-
destructible 95c
Purses and bags, mostly
large underarm bags some
fitted. fine leathers Reg
$2.50 and $3 for $1.95
Dress g‘ingl'lalmsc 32 in
checks, plaids, and plain
Reg 25c and '35:: for 19¢
tissue gingham: 32 in
plaids and checks Reg 39::
‘yd’22c.. :_- ' “j
- Dotted Wee and organdy
36 inrReg 65c yd 39c .
Figured yolles and flock
dobtiaeuee 36 .in'Regé 39c
and 50c yd 35c , '
Sport skirting silk and
cotton novelty 3-6 in Reg
$1.50 yd 90c '
wade » oxford shitting 30
(5
00123.29.ch 224.3; _
7: l -
d Ave, Cf‘l‘lwnorlfi.
for only $10,
Heavy crepe de _
chines, rich Russian 2% «
crepes and hand: ‘ ""-
some fancy silk
crepes in popular
shades of grey, tan,
and brown and blue
and black.
Most of the dress-
es are in the more
popular modes,
straight line with
pleated side panels
or with entire skirt .
section pleated. :3
Some are trim- ;
med with contrast
pipings, some are
more on, the tailor; .
ed type, others are
dressey with rich 9 ‘
beaded girdle effects or
broidered designs.
Dresses for semi forty? ori
street wear, sport mcczl
all sizes in the assortmenr. :
dress for the young miss :0
men’s size 52.
There are pretty wool
in two piece sport style
miss or little women.
Every dress in the entire lot .,
intended to sell for much mm
but in the Anniversary you n
choose for only $10. ’
. ‘--—..._\y 'Becond doctorate: .
Fine under-muslins
at very low price $1.79
17 Philliplnc gowns—cut full and made. of fill: ,.
—'daillty embroidered floral designs—also comm"
hand embroidered. Reg.- 53. for $1.79 _ ,
Fancy tricolettc petticoats with pleated flouncelw
loped and plain, in all the leading col R55 5?"
51-79 3 Second floor, rear. :
Notion values for the Annivelsall
'.
. . . ‘_ Mu
Spool cotton—Clark’s _O. N. fl". l‘.‘-.‘:'. 5.9!.»
spoolsfor25c W6
Spool cotton—meteorised fimsh :1. 3.2:» -'
for 255 : -'
Sewing Silk—‘50 y'd. 'spOols—
OS, 6 spools for 25¢
». Basting thread—foo ‘y'd. spools—6 wolf:
,....~-
, ..
1',“th .
\‘ -tu -
1
01‘3““ ,
& VNNV‘.'
2.5..
. \
LL v.
for *"
,.
.i:l
t._‘. 1.
1....2. -. *
Kleinerts brassiereitea—flesh and K‘x'iiiffi
44: Reg. 95c—69c ‘
e : , . , . - . , _'.A fine“? it
.Kltchen aprons—flowered cretoll...p:~~:‘n_
with bib, also pure ’gum rubber m colors.,-):s’;;;; .,
_~ Hair nets—Vogue in single ‘or mgr;
'100-7q'4for25c , . - ,. ‘ _ «'1
. Daming cotton—mace '563, large r;..:. lie.- _;
3'3—6 “45¢ ‘* Main floor, rear. ' "
Fine dressimaterials of silks 01‘ ..:
During this week we ‘will take. orders :OP‘PI“
material purchased here for a skirt in any 52‘"
desired. Reg. $2.75 for $1.50
“'All silk flat crepe—every
$1.95 , _ '
;~ Satin faced fcre'p'e—‘all shades.
Radium silk, 40 inch lustrous, .5232“, mm 14"
Reg. $1.75 yd, $1.29 . ' _ _ ”A; ,
"Crepe alpaca—e42 in. ’and wool Crew
0
W"
rm; 1; .
wanted c log ,l Egg. $2.50 yd, $1.95
“ ’ 't * @maooqmsg- '
C .