THE EUGENE QUAED
Page Five
rJ.
- Evening, April U, 1925
SHORT WAVES IN
DAY ARE BETTER
FOUR -TUBE SEJ IS CHEAPLY AND EASILY BUILT
. . . -. i
Construction Should Not Cost More Than $40; Exceptionally Clear Tone Results
From Four-Tube Radio Frequency Receiver Pictured Below
(By NBA Service)
,on Conn., April
HAR1; ',mi n invention an
11.
. two" ".,, itHdio Ro-
"i;,, promise to .fleet
W '"rorofouy ibit both i.
rprc ma, b. revu-
eory-tb..
"eater din" duri? day'
"'" F. the Inns w"'e d0
K. T J J h " much lea. powr.
nutt, D". Btati,. eliminator
rdio build"
"'I vlutionarv of these
- u
Ihe more
,-. is the new tneory, u
n "l.a. practically tbe over-
? :.t.dar methods
STia radio transmission, if it is
W .J accented as true.
C."ic 'vrtht
ju Vniineers, will in abort or
S'erTan -dclition to the moJ
.Liver, to filter atmos-
and other unwelcome noises
TkU'T. Reinarti. famous amateur
' "Center i responsible for the
?! .Tory of Horace A. Beale,
j, ,t Varkeraburg, l'a.. is the m
mtor of the static eliminator.
Paradoxical uongiua.uii
Rrinartis theory ia based on bisl.
u waves irav". - - - -
i"bj day 'than at night. In addition
? the discovery that there
J, definite relationship between the
,nni effect, tho distance and the
riorums of the radio wave.
hrter waves, contends Uoinartl,
an penetrate farther'into the lomia
,in laver of atmosphere formed by
tat sun than can longer waves, up
to the point at which they bio re
flected. Being reflected lit a greater
Jeijht, the short waves form a much
brier circle at which they appear
in the earth's surface than tho long
waves, anu so tov BUiti ...
ttnees.
Tk.. so lose utile energy dp
am they have not been subjected
M tbe absorbing influences of the
earth's surface.
Keinarti has bern testing this the
ory for tho last eight months, in co
operation with the naval rcscraeh
laboratory at Bellevue, Washington,
1). C. He has obtained proof from
kimdreds of transmission schedules
in connection with other amateur
itations, during various weather con
ditions, and finally (luring the recent
eclipse.
Dr. McCaa's Device
The experiments were conducted
oo wavelengths ranging from one to
50 meters.
Dr. McCaa's static eliminator
the product of a year's experiments.
It ia still to be perfected.
The eliminator is based on this
theory:
Static dischargers, and power leaks
and
ft. I R R
' et mi ' r il
-zLr Jz t i EEP r -I I;
A BATT. j B BATT I cbatt
By ISRAEL KLEIX
(XEA Service Writer)
TJERE is a description of a four
tube radio-frequency receiver
that excels as to tone quality, is
easy to build and operate and has a
little better than average selectivity
and sensitivity. It should not cost
more ih:iu $40 to construct.
The set will tune out local stations
to ffet distance, but anyone who wants
loudspeaker volume on signals com
ing from stations 1500 miles away
should not assemble tbe set. Its
range on the loudspeaker is limited to
about 800 miles in good weather, but
the quality and volume on the nearby
stations is excellent.
The parts:
LI and L2, 1-3 and L4, two honey
comb coils. 75 turns each.
CI and C2, .0005 mfd. low-loss var
iable condensers '
Itl, 25 -ohm rheostat.
H2. 25 -ohm rheostat.
Rli, 25-ohm rheostat.
C3, .00025 fixed condenser, with
grid leak mounting.
C, battery, 4 volts.
Tl, audio transformer, 6-1 ratio.
T2, audio transformer. 3-1 ratio.
Seven, binding posts.
1 Panel, 7 by 21 inches.
Baseboard, 7 by 20 inches.
er material for construction of set.
Fifteen turns o( wire are taken off
each honeycomb coil to constitute the
primaries.. The remaining 00 turns
make the secondary on each.
To complete one coil, unwrap the
15 turns, cut the wire, lay it aside,
then, put a drop of sealing wax on
the end of tho coil to hold the wire in
place.
v Tie two pieces of thread length
wise around a vaseline bottle. In oth
er words, if you stand the bottle on
end, four threads should be perpen
dicular, to the bottle and equidistant
from each other at the sides.
Wrap the 15 turns of wire taken
off the original coil around the bottle
at right angles to the threads, clip
the threads and tie up the newly
wound coil.
Remove the wire from tbe bottle,
put it inside the honeycomb coil and
you have LI and L2. L3 and L4 are
made similarly.
LI and L2 should be mounted two
inches from the rear of the base
board in front of the .aerial and
ground binding posts and perpendicu
lar to the panel. L3 and L4 are
mounted at right angles to LI and
L2 in the middle of the baseboard,
directly behind C2.
Tho first tube socket should be
Four tube sockets, wiring and oth-1 placed between the two variable con
densers which are fastened to the
left half of the front panel. Other
instruments are mounted in the cus
timary manner.
One 25-ohin rheostat may do the
work of all three, if proper connec
tions are made.
In the accompanying diagram are
shown several optional connections.
These are shown by dotted lines.
They are suggested purely for exper
imental purposes, in individual cases.
The set first should be tried out
without the line labeled "OP" con
nected. Note the selectivity. Then
make this connection and again watch
the selectivity, or ability to tune
out a strong local station. !
C4 also is an optional connection,
as are C5 and CO. If. placing C4
across the primary of the first (6-1
ratio) transformer improves recep
tion, leave it; if not, don't use it. If
you have them on hand, .try out vari-
Jous capacities of fixed condensers at
! I K 1 tl
UV201-A tubes afe used through
out. Ninety volts of B battery are
required on the amplifiers and from
18 to 22 volts on the detector tube.
The aerial should be no longer
than SO feet, including the lead-in,
unless little selectivity is required.
A long aerial will Increase the vol
ume and range, however.
ish stations and those of othr coun
tries. If the nary wre to charge for
this service, it is estimated, many
thousands of dollars would roll Into
the treavury.
Hut the department earns enough
money in the commercial service it
renders ships at mi, when no pri
vate station ran take care of its
mpi?acps. Such messagea brought
in $300,000 last year, more than the
cost of operating the entire naval
communications service.
Messenger for All
Besides these and its own mes
sages, messages to and from all
other gntverntupnt departments are
hnndlrd through the naval radio sta
tions. In this way the government
Is said to save about $2,?.00,O00 an
nually. Yet the tT. S. navy pays for mes
sages that happen to he handled
through foreign stations. For in
stance. If a naval ship in Borneo,
not within communication of a U. S.
naval radio station, sends a message
through the Hutch station there,
Holland sends in a bill for the ser
vice, and Uncle Rain foots it.
Besides radio, the naval communi
cations servico conducta other forms
of communication, Buch as messages
by sight and sound, by pigeons, by
posts and, of course, the mails.
0. V. HUMRIGK TO
RETURN FROM TRIP
FOR RIO SURVEY
Bureau of Mines
Takes Over Helium
LOCAL BROADCAST
STATION IS PLAN
OF EUGENE FANS
Plans for a radio broadcasting sta
tion in Eugene to announce to the
world the resources of this city are
being made by several Eugene fans.
It is expected the project will come
up either before the Eugene Radio
club or the chamber of commerce
within the next few weeks.
"There is nq doubt, but that a radio
station, can be made a powerful ad-
from high tonnion wires, act as vertising medium for a community,
hock esciters to receiving antennas,
No matter what woveleuglh the an-
Wnna is t lined tn. Die static dis-
rhurcps will "shock" he antenna and
to affect tho receiving detector. If
w could tune the antenna to the
ttmlength of the signat we want to
rwiw, and then tune the static to
a different wave, the disturbance
would be either eliminated or so
mitigated (hat its effect on the rc
ewfr would he negligible.
This is what lr. .McCaa's device
onB. It consists of an oscillntor and
wTfral extra mils and is hooked to
ny type of receiver.
"Th radio indintrv enn'f Nta .n
n Mlep di-H of Ibt-z." Secretary
HooTfr said in an interview on the
Mure of radio broadcasting.
lmnrnvnifiit r
4nis tnore ininnrtnut nnw thnn
forther regulation until it become
IwiMe to My what form of reKu
Mtiftn in needed. The British licens
lr system, to cite one regulator
"ttMtion. wmtlrl never be tolerated
u .hib country, t(,
mi
he secretary thinks,
for ltr
conn try would never stand
r .'tensing or taiitig radio listen-
' Mr. HoAVKr Bawl VI.. :J-
1 ""i'1" nn" "-"mpany ha a
jHr and all tho revrnuo an dr-
iWt rV V""'' and vt
monopoly
l,.n , .l ,. mw nr '"In to
-i h' Wk" frT Y"t-
ilBH. .,n "'""M"'" around for
"""h"' P'oplc-.
Imi.i " , ", nl"r" P".T
I", ri.k .1 . 1 """ h Pmb-
says 1 Ijraliam, aisincc
and pasacngcr agent of the Southern
Pacific' railway," and' one ' tne '"teal
to join the ranks of tho Kniglita of
the Dial, "towns like Hastings. Neb..
Walla Walla, Wash., and some that
would be unheard of are making them
selves known all over the country by
their programs.
A good broadcasting station, wnicn
could send Kugene's message up and
down the coast and .throughout the
west cost about ?:i80O, it has been
estimated. That may seem like a
largo amount of money, but the pub
licity thn town would receive maj
he worth mnor times that amount.
"Eugene being the sent of the Uni
versity of Oregon, and having a num
ber of splendid musical artists, could
provide good programs either weekly
or serai-weekly, and other nearby com
munities could be invited to take part.
"The wh'de idea is. of course. juBt
a tentative suggeation at presenh
There would have to be msny thinga
worked out before it could be brought
into reirlity. In my mind, it is a pos
sibility that is well worth investigating."
ownership from July 14, 1019,
'to January 31, 10-3.
"It ia a serious question, which
must be decided by the courts,
whether liazeltinc was acting within
his legal rights in withdrawing his
dedication."
Back of this suit, however, A. H.
Grebe sees an attempt of the Hazel
tine interests to boost their stock.
"1 view this suit as a political gcs-.
lure intended to create renewed in
terest in the declining stock issue
of the Hazeltine corporation and its
licenses," he aays.
T!
of 63 radio traffic stations dotting
the continental United States, Alas
ka,' tho canal zone and its insular
possessions. Besides these, 52 radio
compass stations along Uncle Sam's
coast lines maintain safety at sea.
Fee Aid to Ships
The navy's compass stations pro
vide positions and bearings to ships,
navy, commercial, American and for
eign, on request. And the service
is free, in contrast to charges col
lected for such information by Brit-
WASH1NGTON. April 11. OP)
The bureau of mines, under an act
passed late in the last congress, will
take over from the navy about July
1 the production of helium, the gas
used In inflating the giant dirigibles
Los Anecles and Shenandoah. This
transfer is not expected by Dr. S. C
Lind. chief chemist of the bureau, to
involve anv marked Change in policy.
No appreciable quantity of helium
is being exported now, and the new
law provides that export applications
must be made to the secretary of tho
interior and permission obtained from
the president, on the joint recommen
dation of the secretaries of war, navy
and interior. This provision wis put
into thn lnw to nermit future Ameri
aens trans-oceanic air lines to have
a supply of helium on hand at their
foreign terminals.
Officials of the bureau are careful
to point out that the new bar against
'helium exportation will not militate
against foreign scientists who desire
a small quantity of the gas for their
laboratories.. '
O. V, Hnmrick, radio expert with
the Radio Supply company. tt$4 Olive
street, is tx peered to return from su
extended tour of the east and middle
west in the next few weeks, accord
ing to an announcement by the pro
prietor. It. K. Wittington. Mr. Hum
rick has visited all the large broad
casting stations, and delivered a lec-:
ture on radio over station YVCCO
recently. Me has also called on
WEHH. W1.S, VUN. of Chicago. 111,!
WHO. Dps Moines. la.f WTIV1.
KK.MX of Minneapolis.
Mr. Hnmrick has had a wide ex-1
perience in radio, says Mr. Witling
ton, "and in addition has had much
experience in electrical engineering.
He has been superintendent of elec
tric motive power of the Louisvillo
and Nashville railroad, erector for the
General Klcctric company at ritts-
burgh, erected the first electric chair
in the state prison at Lexington, Ky.,
taught in the Cleveland Auto School
at Cleveland, Ohio, aud has becu tour
ing the east at our expense to gain
an insight into the latest and best
radio equipment and how tho eastern
cities are organizing radio clubs.
"When he arrives in Kugeno Mr.
Hnmrick will be prepared to give
Information on the question of broad
casting and who is going to pay for
it, radio pictures and when we can
expect them, diagrams of new hook
ups, how to change your old set and
make it pick up, a new hook-up call
ed the baby super-heterodyne, using
four 201A tubes that will do the work
of eight. He has tested the set men
tioned and csn vouch for its DX and
selectiveuess and purity of tone."
came in for classical selections than
for jazx. As a result, Vin James,
pianist of Helleville, 111., sat for three
hours at the KSI) piano and played
70 pieces of music.
The program ranged all the way
from "Largo." of Handel to "Ited
Hot Mamma," but jars took a minor
part.
By the requests sent In, the mnt
popular piece asked for was the
'Teer Gynt" suite of tlriej. Next
came Tercy tirainger "Shepherds
Hey" and "Country tlardeus," "Hen
ry VIII Panees" by Herman, and the
"Sonata 1'athelique" by Beethoven.
Other poiilnr elHini also received
more votes than jaxx.
Among .ia pieces, Irving Berlin's
"All Alone" led the l!st. "Follow the
Swallow" sod "What's Heroine of Sal
ly" usd the least requests.
Microphone Only
For Entertainment
CHICAfiO, April 11. Broadcasting
stat inn' WON, here, is trying to set on
example for other stations to follow.
It is declining to answer requests
fur special numbers or even tele-
grams and letters of appreciation by
radio. lVrions requesting a special
song and others receive their acknow
ledgment and thanks by mail.
The microphone is kept clear for
the entertainments and lectures alone.
LARAWAY'S
Summer
Radio
PERFORMANCE!
That's the Thing
Thn liiullo Industry has become stabilized and Is entering
upon an ra of expansion In commercial, educational and
entertainment fiolds undreamed of a few years ago.
Reputable RncUo Bota nre now generally known making
It an easy '.ask to select a model suitable to your own
particular necda and location:
HERE YOU ARE
Gllflllen,
Classical Music
Better Liked Than
Jazz Over Radio
ADVICE FOR A WIFE
TOKIO, April 1 1 W A letter
picked np on the beach near Kama
kura and handed to the polico con
tained these injunctions from a jeal
ous naval officer to his wife:
"Never converse with tbe postman
or the tradesmen. Hove tlie news
paper and letters delivered through
the slit in the door. Pon't go to the
public bath at night."
L
fBv NBA Service)
yASHlNGTON, April 1L Uncle
tion service, invaluable as it is ex-)
pected to be in war time, ia proving I
a valuable asset in pence. j
It is saving lives at sea through
the service of its compass stations.)
It is saving the government some ;
$2,500,000 annually in messages sent i
out for other departments.
It is more than paying for itself.
Not counting the transmitters on
naval ships, airplanes and other mo
bile units, the service has a total
Radio Headquarters
for the Following Receiving Sets
i a rti rt
?UN6 DI6TAHCl-Irt lIV
RADIOLAS FREED - EISEMAN
MARWOL : FRESHMAN
Eugene Music Shop
8 East Ninth Street
ST. LOUIS, Mo., April 11. Classi
cal music won a decisive victory over
jazz when a special program of re
quest numbers was broadcast by Stn-
tion KSO, here.
Out of more than 300 compositions
asked for, following announcement
of this request program, more votes
$125
4-tuba Nutrodyn
with speaker, tubes, batter
ies and all com
plete, only...."..
Ollfillen, 6-tube Is'utrodyne
distance, set all COfin
complete 3CiUU
Atwator Kent, 5-tulie model
all complete, ev- (47(1
y I 1 v
m ery thing, only...
Super-Heterydyne Radlola, T?ft(l
complete with everything 4?fcQU
We are exclusive dealers for the Atwater Kent
Radios.
Convenient Terms on Radio at Laraway's
Laraway Music Stores
N1
"'"nmion
- ngnt there for the .t... '
la iv. .,' l "."""ous that there
"Hliene. getting the radio
"T !. ' W"I-I 'hat some
lit vbom. V'n '' lia
'"laV'.r ""'V''
."net- "r ,''r, " n-
"tiii. 1 T""" l-'Pons sales
' that --'"'"' in 1(C1.
i?h ti, 1 r""M provide
""ram. f ,1. , ""v ,nr dai y It
-RTI h'" .vl t.i-ni. line
art
1 la . . more
(By NEA Service)
TKW YORK, April 11. A hereto
fore iinrevealed page in the
history of the neutrodync circuit may
be laid open to the public in the
course of a suit brought by the
Ilaieltlne corporation and the Inde
pendent Radio Manufacturers, Inc.,
against A. II. Grebe and company.
This iiage, according to tho de
fendants, may reveal that the neu
trodvne patent held by Trofessor
Louis Haseltine of Stevens institute i
of Technology had been dedicated by 1
him as public property and there- j
fore raises the question whether he
could revert the patent to his per- ;
sonnl benefit.
"Haieltine was employed by lh
nary department dnring the war."
the firebe company explains, "to do. ;
sign a radro receiver for government I
use. and while in the service of the (
government developed a circuit ar- .
rangement for which I". H. patent j
Xo. I,4.VUn was later granted." '
Subject of Suit !
It is this patent that the llaaei-
RADIO
lili tsient. line interests declare in their suit
import-1 is being infringed upon by the Grebe
country every j company in its synchophase receiver.
I "Having developed this circuit in
I the employ of the government." the
i explanation goes on. "Haicltine evi
dently considered that it belonged
i to the people of the I'nited Wales,
core of itself. ! as he applied for a patent under
materi.i ,,, - , j,,,,!,,. 1. known as the dedication act,
one i.t !..
meet,. !:... ",. .
now i thintt
of improve
ae tfc',. '"""inn of growth
" a. h. nr
e,,v IT ..'"'"rial put out
T - " NIC
- ising
.if an -
That is the most I This provides that the patent shall
become the properry and he open
to the use of the public.
Wat Owaa ltr
"Having thus dedicated his Inven
tion to the people of the I'nited
Svates. Haxeltme reconsidered his
trace hss .
lAl;",v 'tRS MISSING
,...' ' '"t Brut,), f!,:
m '':i mm ,h, h",' i gift and took steps lo recover it. bj
T ar 11,., 1'" "I' canceling from his patent applica-
" ntitf tt,0 ' "'ag'on ye.terday. tinti papers the dedication rlaii-r-
"Nul. ""e rescued re i The patent office permitted this
t rJiaoa of front, hut the public was
GfiocDPSon
9PEIKER
reaches the highett pinnacle
of tone reproduction
The Thorn pson Speaker was
designed by famous engineers,
with wide experience in acous
tics and sound reproduction-
The Thompson Speaker is
beautifully satisfying in its
Trueness and Fidelity to
every musical pitch and tone.
Regardless of price or
type, a Thompson Speaker
will improve tho tonal re
production of any receivini
set tl
Thompson
5-tube Neutrodyne only $130
terms. 6-tube Neutrodyne,
only, $185, terms.
Special Prices Next Week
Wonderful Savings
GREER - CALLAHAN CO.
wonderful savings 011 nationally advertised
radio merchandise. Every article, guaran
teedevery article as represented. Omo in
see these, bargains for yourself Seeing is
believing. Xote the prices.
13.01) (RCA) Cunningham cTO fTP
Tubes (.101-201-200) 4b.Ot)
$3.75 Kverready Yale, q
46-volt battery sPaCawO
(6.00 3000 Ohm ma r-f
Headphone 9Tst3U
125 Atlas qq Qf-
Loudspeaker $9,33
(35.00 Magnavox COO Cfl
Loudspeaker PtvOU
(9.50 Loop mm
, Aerial 4 I I O
(25.00 Rrlatol C11 7C
Loudspenker 9 I I I O
Battery Teatora. Radio Cablneta, Sockets reduced.
2-Tnne Walnut Cabinet worth (40, COO Crt
Our price $CC.QJ
5-Tube Tuned Radio Frequency Set, complete with
A and B Batteries CIOC flft
-only, terms 9 I aCOiUU
(18500 Nationally Advertised Ret, complete with
Ratlerlrs and CI DO fIZ
Loudspeaker 4 I UOa f O
Trade your piano for a radio
L
Greer-Callahari Store
858 Pearl St. 858 Park St.
Call and see our new ranges and davenports No obligation to buy
K.XL J
Enchanted
Evenings!
Why Buy an Expensive
RADIO SET
to enjoy tho fascinating programs folks are enjoy
ing in their homes nowadays? Radio brings you
music, educational talks, concerts, In.test world
happenings and at a very reasonable cost if
you see us for your set.
WW.
The Famous Globe No. 770
WILL GIVE YOU THE VERY QUALITIES YOU
WANT MOST The ability to find and hold stations,
without interference, accurate logging and exact repro
duction. "Stand by" with this receiver and always be
assured excellent radio entertainment.
GLOBE RECEIVER, with four UV 2D1A
Radiotron tubes; storage "A" Batterv: 00-
volt Dry "B" Battery; Loudspeokor; cords
ana plug, complete
at..
$108
The Only Exclusive Radio Store in Eugene
Where service department is always at your command
Radio Supply
fx Radio Supply
Srh COMPANY rSWA
vvLa liVe BtrCet V p
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VV1 .
IV v SI
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