the ohegon suday journal, Portland, sundat uorntng, may 21, 1922.
5
Radio to
1
h ForecsMing
Thundefc Storms
DETECTION of approaching thunder
storms la time to make necessary
,. a4jnstmenta in operation of electrle wrr
ice Is a valuable practical us of the
radiv according- to the report of the
electrical apparatus committee of the
Xetional Electric Light assocallion pre
sented at the coavention in Atlantic
cnr laat week. The radio also serves
; tot detect defects in electrical- apparatus
aad equipment more efficiently than any
Other jacency, the report says.
iTChe entire radio art has reached an
niAently practical and dependable
stare." the report states. "Transoceanic
telegraphy on a basis comparable to that
f the i cables probably represents both
the greatest investment and the most
spectacular operation. The marine use
of radio, including not only ship corn
munication but also position finding-
for vessels at sea. are also of tremen
dous Importance. la Europe, wireless
telegraphy Is coming- into extensive use
, far inter-city communication. Some at
tempts in this direction have also been
Baade in the United States,
V "The broadcasting- of new ' and
. weather despatches, mnsteal and other
entertainments, speeches and church
services by radio telephone is providing
' a (valuable service to hundreds of thou
.' : sands of listeners. Radio has also
proved its importance as a wire line
auxiliary in the railroad field. , Train
dispatching- by radio has been accom-
- plished many times, -and some far-seeing
railroads have installed radio equipment
: as part of their permanent plant.'
- Many electrical companies are making
vie of the radio. Communication be
tween plants and substations, trans-
; mission in instructions to repair nnn
' along; the lines, and the possibility of the
' 1 uiui cvuifut m. iwiiuica ta.iv si veil
outfits en antomobOes aad ' motorcycles
Is) made where portability Is desired..
(A wide field for remote operation of
: sabstationa and switches is opened by
- the application of what Is known as
, ise -wireo wireiess.-
("Not the least Interesting yoatgrowth
of radiant-wave telegraphy.' says the
' 1 emti L . "la ttm mia af 1 tm nrln.
ctnles to communication along- wires. It
has been found entirely feasible to asso
. elate s radio transmitter with' a wire
eystem running- from one ' point to an-
" elhF fma tHmitrh tt virjr wtn. bum!
for power transmission) and to send
along the wire a series of radio-fre-
quency current waves wnicn may be
. detected at the distant end by means
of a simple radio receiver.' Such "wired
-wireless," as the , arrangement Is fre-
quentty called, permits considerable econ
omy in operation, it is claimed tor this
system that fairly clear telephone eora-
tqunieatlon, la possible even with llght
- eaibg storms over the main, line and
with all bat one of the power wires cut
f grounded."'
t Y accum Re cei v e rs
Are "Made Clear
IVxttiam B. BuUm. rttJX. in TmtSm'm Waakls.
f I There are two classes of raido reoelv-
eva: 1) Crystal detector receive!
which employ a crystal as the "detector"
and are simple' and Inexpensive, but
have a radiotelephone range of about 20
rntlea only: and (8) vacuum tube r
. cfirers, wiiicn employ one or more
A-acuum tubes, resembling small electric
lamps, and which must be used to hear
. stations that are more than 20 miles
' - away.
tThh AlffHrm m air Mi thf vamvmw fn)ui
: receivers are legion, and very few r
cemble each other la appearance, but
-nevertheless there are only a few basks
types. These types, with their praernal
characteristics, are given la the follow
ir list, and a study of this list should
enable anyone to select tho kind of re
ceiver to suit his needs.
I S1NGLK-TUBE RECfiTVKS w These
receivers' have only a single tube
ana are ue simplest ; sad least, ex
pensive- of this class. Those of rood
reaTrea have a dependable range, of about
Mil
IN STOCK
We are distributors for -
Radio Corporation "
We tins house Electric ' Co.
' Remler Mfg. Co.
t Cunnin sjham '
i" ; Pacent Electric Co. ' ,
Wrru J. Murdock
- I and Many Others
See New Areolla Grand Set
I Now en Display
EL.ECTRIC CO
In Radio Business 10 Years
75 Sixth Street, Portland
ceUsed
pHIEF SHERjMAN CHARGING HAWK, -one of the
- original developer? of die wireless system of communication,
investigates the pale lace's method of radio. The chief jwas
positive that the; radio-phone was. superior; to his old 'system-asmoke
signals of the tribes which conveyed vvarnings of war and
messages of I T ;
What They Are and
r"5y J. H. HalfeMk. K. X.
AKTkiiNA One or more copper wires
elevated In the air all connected to
gether and thence to the radio lnstru
meat. The antenna, may be likened to
ute "reeier" or an insect.
INSTJXiATOK Porcelain cr "electrose"
U placed at each end of antenna to sees
energy from being lost to ground, ,
VACTTDM LIGHTNINO ARRESTER.
Xo dissipate to ground any "static dis
chsrgs" from the clouds that might
otherwise injure apparatus or building.
UKTiSCTOR (Crystal or and ion) To
chang the radio frequency to audio fre
quency to which the human ear will re
spond. DETECTOR PANEL A combination
of audion detector socket, rheostat, grid
condenser and grid leak ail the neces
sary adjuncts to the tube itself..
VARIO-COUPLKIt a Brimarr or an-
i tenna cou wttb variable tops, and a
fixed rotary secondary coil with varia
ble "ooup!lng-
VARIOMirrER- Two edua. one within
another, connected la series so that they
may be made to vary the total induct
ance from maximum to minimum with
out sliders or taps.
VACUUM OR ELECTRON OR AUD
ION TUBE An electric lamp which,
when heated to incandescence, trans
forms the inaudible radio frequency to
SO miles, but under favorable conditions
are usually able to receive high-powered
stations at distances up to 300 miles.
i fiey receive clearly but not very loudlv
"Loud speakers" (that is. sound-magni-
rying corns) cannot be used with them.
Prices range up to $75 for complete out
fits of the best makes.
TWO-TUBE RECEIVERS (One Stage
of - Amplification) By using a sec-
end vacuum tube, the sounds
heard in a single-tube reoejver can be
consiaeraoix amplified, bo that
sages from nearby stations coma la very
iouaiy. and those from high-powered
stations as far away as 500 miles can
be distinctly heard under favorable eon
aiuoaa. Two-tab Instruments cost
from 20 to 150 more than single-tub
receivers of corresponding makes. They
are not recommended for us with loud
speakers unless used within a -few miles
or a station.
THREK-TOBB RECEIVERS (TWO
stages or Amplification) - The third
tub provides still greater ampllfl-
cauon or tn messages, so that three
tub receivers have a very wide range.
Loud speakers can' be used with these
instruments. A three-tube receiver of
one of the best makes costs S2K com
plete, Loud speakers cost from $5 , to
S200 adidtioual, depending' upon the qual
ity and volume of the so and.
hnjLTI - TUBS BJDCsnrwRS Re
ceivers of the - higheet grade have
several Stares of amplifleatlon aad are
often provided with bulit-ta loud speak-
xoeuent mstrumeat can be
pwchased tor jus. AX higher pries, re-
wlth - phonograph attarhmwrita
and "period" eabtnets eaa be obtained.
CKIT RSCatrVgR3 .OUSial -munw
faetarer apply reoeieia which can be
constructed In uatta Ilk secUoaal book-
A single-tub reoetver . is first
purchased, and oa. two aad more Mum
of amplification eaa be added as the
purchaser desires. s, ;
Benson Radio Ciob i. .
At the last rerular meeting af tK.
Season Tch Radio club a letter which
was received from the A. R. R. Lv.wes
read to the club. It stated that a relav
is to be held June 4, S and 4V which la
"Fifteen Years in Radio9 '
HALOWAT
HALLOCK & WATSON
"RADIO SERVICE?'
Radio, Telephone and
- ' N i Distributors for
NOKTHWESTJERN RADIO MANUFACTURING C02DPANT
J. It HALLOCK. formerly TBo C. H. WATSON formerly in
, cnscUon emgnwer. U. S. charts U. - SL Naval Radio
Navy and Federal TeL Co. , Laboratory, Mare Island, CaL
, ; r ; Operating Stations KGG and 7X1 "J :
192 Park St, Portland, Oregon, Main 5677
:i It
-yy
What They're For
audio frequency which may be heard. !
AMPLIFIER An aadioa tube, socket;
rheostat and bridging- condenser so con
nected to an amplifying: transformer thai
it will amplify the signal which the
detector has made audible. '1
VARIABLE CONDENSER A number
of metal plates rotating inside a group
ox xueed plates, so that the capacity'?
may be varied from minimum to maxi
mum by turning! through an arc of 186
degrees. -' i ; - i '.-
AAIFLLFXER TUBE An audlofl tube
with high degree of vacuum Chard tube)i
on wbfeb a plate voltage of 45 to 100
volts la used for amplifica.tioa of several
fold. 1 . .a :-: r I ;
DETECTOR TUBE A sort tube (low
vacuum or "gas contend) which em
ploys from 15 to; 40 volts on plate, used
for rectifying' only, ,-r.iit t i
"A" BATTERY Six vott storage batt
tery such as the ones used in autoa. . lit
Is used to supply a low voltage current
toneat the filaments of all tubes and
to energize the "MagravoA" when used,
a BA riBii ury oeu battery such
ae used la flash lights made up la i a
unit of Z2 or 45 volts n amber of small
cells incased in wax, As the load Is
very smali, these batteries will last for
sax months to a. year, depending on the
amount usea. : i:
to relay a message to all police chiefs
in the United States, Javltias them to
the police chiefs' convention ) to be held
in San Francisco. All the members , of
the club were asked to I participate la
the relay aad help forward the message.
The message is to be started off by Aug
ust Vollmer aad is to be relayed by
spark, CW aad poseibly by phone, aad
is to be both 200-meter land , S7S-metet
wave lengths. The message will com
some time between 10 and 11 a ra, Faj
clflo Coast 'time. ' Full' particulars art
to be had in the May Issue of the
Q. S. T., the official organ of the Azaerf
ican Radio Relay league.' ? " ( . .
As a part of; the dub's radio set Is
Incomplete the committee In charge of
the construction of the set was not dis
missed. The , dub plans to tnstaH
it
L K. w. set early next term. ,
A aa Indication of the growing- pop.
cuanty or tne radiotelephone, a real
estate firm of New York announces that
it will wire several apartment houses
for this service.' Th builders say that
it will be, better for them to erect one
aerial for the use of all tenants than
to have th tenants erect Individual
aerials. A building contractor of Phil
adelphia also announces that building
being erected by him are to be wired for
radiotalephon serric as part of the
regular equipment. :
Sstacada. Or- May SO- "Ted" How,
son of Mr. and Mrs, F. C. Howe of this
place, and only It years of age. has in-
staued a radio- set and with It was
to - enjoy one of th onttre radio
programs from Portland last night, H
also picked up several ninani.ii from
elsewhere aad expects to get art the
rrna tomorrow alarht. Toaag
Hew is th operator at th local picture
theatre and Installed the radio set with
out outside assistance. - - , . . I
Cealralia. "Wash. CaatraSa ' radio
Cans will meet May 23 at th aew com
munity bouse for th purpose of reor-
ganialng a radio dun. About 40 Ceo-
tralians hav thair individual radio re
ceiving' sets aad . many - mor plan ! to
make a study of radio with the club.
Officers will be elected at the raeeOna
ra the commasity house; The meeting
was called by E. F Vaa Schoick. secre
tary of th Chamber of Commerce, I
Telesraph Equipment
Electron Tubes
xn
did Battery
RADIO receiving apparatus that uses
-fx ordinary electron tubes for amplifi
catloa, -but which does - not require a
storage' battery has s been developed by
the radio experts of the bureau of stand
ards, the Washington Herald says. -
It The current ltd light the .filaments of
the electron tubes is obtained from an
ordinary electric lamp socket instead of
the storage battery ; which th experts
characterize as "a drawback to the gen
eral use of radio seta and the most ex
pensive portion of the equipment for the
person who wishes to make , his own
set." : ll . -
iHow to ase ' the electric - light wires
emselves as an antenna and thus elim
inate entirely the need of erecting an
antenna has also been worked out by
the government radio engineers in con
nection with ! this new: set, ; although the
signals are likely to come in with less
strength wnen tins is done-, Tne new
design of receiving' set can be used, how
ever, with any type : of antenna, . either
the j ordinary j elevated aa tenna, a coll
Or-special forma. f i:;'" . j-
I "The new receiving set consists : essen
tially, of an amplifier with minor auxil
iary parts." the experts explain. ; "The
amplifier: utilises to-cyclo current supply
for both filaments r and plates of the
electron tubesi . The amplifier has three
radlo-frequenay : stages and two audio-4
frequency stages, and uses a crystal de
tector. The SO-cyclo current when used
in aa ordinary amplifier circuit intro
duces a strong 00-cyclo not which offers
serloos interference, ji This has been prac
tically eliminated by balancing resist
anoes. grid' condensers and special grid
leaks of. comparatively low resistance,
telephone transformer in the output cir
cuit,; and crystal detector, instead of
electron tube detector. In the final form
of the amplifier, there is only a slight
residual hum which: Is not objectionable.
The amplification obtained with a. e.
mipply was as good as that obtained with
the same amplifier used with d. c supply.
The: complete unit is Ughtj compact and
portable. . For the reception of damped
waves, the amplifier as constructed op
erated most satisfactorily for wave
lengths- from) 200 , to 750 meters. This
range was determined by . the. working
range of the radio-frequency transform
ers used. By using: . suitable 'radio-frequency
transformers, it is expected that
the amplifier will be effective for the re
ception of damped waves and undamped
waves: as long as 10,000 meters. For the
reception of undamped waves, a sepa
rate heterodyne should be employed,"
i A publication of the bureau of stand
ards to be issued shortly: win give cir
cuit diagrams and state the values of
the ; condensers, ' reslsters aad inductors
used. .r .i Ji. -'-. . ..
;-u;;... ;
Many Towns Ready to
Install. Sets
Washington, Mayi 20 (TJ. N.) Tims
' was when the village held Its carnival to
buy a motor fire engine.: Time will be
when the village will hold its carnival to
buy a radio telephone broadcasting set.
I Th department of commerce's radio
- division expects - to - do i a flourishiag
business as soon as the1 radio law Is
passed in granting- licenses to comrmrol
ties in the country districts out of the
direct une of communication with the
larger concert broadcasting stations.
j For a long time to come, it is pointed
outy the radio phone broadcasting i
roost necessarily h a ferg corporation
or ' community property because of its
expensive&es. .The average broadcasting-
outfit costs from 80OO to $10,000,
! when bought outright from the large
radio corporations who make a specialty
of manufacturing broadcasting seta. Ob
viously this is beyond the reach of the
average amateur. H must content him
self with a sending license for cod sig
nals.. And speaking of cod transmis
sion, up in Kockville. Maine, there is a
community set which broadcasts news
in code signals to Swan Island, several
miles away.; in plaos of a telephone
cable which broke down some time ago.
-1 Not only because of its expensivensss
with the radiophone broadcasting outfit
b a community affair for a long time
to come, but the very nature of broad-
easting' service Implies community use.
Just as soon as a community can get
enough funds to buy! a set. the depart
ment -will grant it an i amateur's li
cense which will enable j the town ao
thorities to hold-their concerts and to
broad east them to every citizen within
the town limits. And this sort of broad
casting. It la understood, appeals par
ticularly to the radio division because
the olflcialfl believe - that th radio-
phono's greatest usefulness aad greatest
opportunity for service, lies In the neigh
borhood of Main street. , -.:.' -t -fi
At present the . radiophone vogue - Is
largely a big dry proposition, but ex
perts her contend that this is only tem
porary, that inevitably the radiophone
will seek its own level, iand that level
is th country town, f " ? M
The community broadcasting idea la
entirely feaslbl and desirable, officials
believe, because it does not create any
ooaalderahl Interference, and under the
new law, will probably operate j on a
low wave length j of 160; meters, i This
wave length will be ample tor th cop
Of th small community, i .
1 Torkvin. Ohio.! May UFir Chief
A. F. Malasky wants to speed cp his
vohmteer members of th local Cre
tlchting Idepartmeat. . Accordingly - he
has decided to install a wtieleas phone
receiving set ra the vfllag bnHdms; Aa
amplifier, he announced, will be at
tached s that the firemen may hear
conoerts, sermons, etc. - broadcasted
from Pittsburg. Chief Mstsalry expects
ihe plan to result In mor of the volun
teers loafing about th municipal build
ing, making them available for quicker
action when aa alarm Is sounded.
I Ecio. May 2oAXr. A. Q. Prffl Is Instal
ling a 'radio receiving' station witha
radios of 2000 milea. This, when com
pleted, will be one of th Jbeet stations
In Z4an county. u i..n . . ,i-t-; m
l ; sm-ft.-- rr, " :r '" : i V:
jLanouncement by " the Hood River
American Legion post that radio con
certs will be a feature of th second an-
troal Mt, Hood cUjnb,- has created a
surprising Interest, according to Kent
Shoemaker, 'chairman. Th Lesion Mt
Hood climb,' as the ascent has com to
be termed, launched only, about a month
In. advance t of the . 1821 event. : was a
JvrVTi Mail Oi-rT rniswi
J"'1 111 ' SM
j J. Complete '4
I, . Line. j J
CHOVN HARDWARE CO.
147 4th SL .
brilliant succesaj Despite , th short
notice last summer: more than 150 par
ticipated in the campfire stunts, and
refTeattontsta. including -Oovemor Ol-
cou and Secretary of Stat Koser were
led to the summit by veteran guide Hark
Weygandt. . Instead of th rtwo days
that are now being devoted to th climb.
It la proposed to open the camp tn the
future for a week or .more and Include
In th acU-riUes skiing and othep snow
field sports. County official havx
pressed a willingness to aid la the de
velopment of the plana. 'The event will
be extensively advertised in Portland by
a Hood River Legioa-comnritte prior
toLth' .ascent' C th- mountain,; -.t.fctrl.
Radio; Work of
HGrf3atest" Bale
A KTOKK who has listened la on a
xl radio set during; the approach 'Of
a thunder storm has little new to dis
covert in the way of frying, hissing, bub-
pungi aad sputtering noises. -I It la only
natural Xor th listener , to wander where
they U com from. , . 3: f i -?
In, general there are Just two kinds
ox raoio noises--tne ones tnat can t be
'avoided aad the ones that ctA. In the
first class are all of th nataral ones
that' result from electrical disturbances
la i th., ether, through which all iradl
waves travel. , - It must be remembered
that these waves follow! the same laws
aad behave in exactly th same manner
as th waves created "to order"?; by man
made machinery. ' :r V . -j 4 .
The second class of noises is the result
of faulty wiring, or In many-case Im
perfect or Improperly constructed bat
teries. Wire must b tight. It is for
this reason that so many t who build
radio sets take special car to solder all
joints - even though binding r posts pro
vide a seemingly tight grip on the wires.
;To a great many people a battery is
just A battery, and need only be consid
ered ' from a standpoint ' of voltage and
amphere-hour capacity. I It is true that
these things are of prim importance,
but there are other features of construc
tion deserving of far more attention than
Is commonly given them.'" 1j: f -i1
i An Important feature of 'the "B" ; or
24-svolt batUry' for example, ts that It
must be able to hold Its charge for long
periods not jonly - because of economy,
but because electrical leaking from, cell
to cell or from positive to negsUve posts
of any particular cell is distinctly a
noise producer. It is to prevent this dis
turbing effect that a nationally promi
nent battery company has developed a
formof "Bf battery la which each, cell
Is a glass jar capped with - a special
screw top and separated from its neigh
bors by compartment partitions. It is
said ; that the leakage and consequently
the possibility of "B" battery noises is
practically' elirainated. h - u t
Vancoaver, Wash. Music from Los
Angeles has beet) heard in the home of
B, M. Mumford in Kast Vancouver over
a 1 radiophone using a crystal detector.
The Mumford radiophone ia one of the
best equipped private instruments ia the
city and is the work of Royal Mumford,
the ; eldest . son. although Harold : and
William, younger 'brothers, are both
licensed commercial - wireless operators.
The Mumford boys began experbneatlag
with wireless telegraphy in 1)14. and
with simple parts picked up at different
times and connected with water pipes
evolved an Instrument that would re
ceive wireless:: messages. When) the
United 'States entered the war Royal en
listed at one and was sent t the naval :
radio school at Mare Island. He i was
assigned . to the transport I Walter -: Q.
Luctten&actt as wire less operator and
maae tnree trips across to Europe,
celvlng his discharg as fc wm starting
oa tn zourta,. .
Washington t Stat Collece. i PnXhnan.
Waah- Tbe 'establishment of a. radio
broadcasting outfit at the Stat college
or Washington has been proposed by
the Pullman Klwanla clubhand efforts
are to be made to interest other Eastern
Washington clubs in the proposed ven
tur. - ; ; . ' t '''
There win be a great advantage lh the
excellent opportunities afforded at the
college in sending ' broadcast to more
than 20,000 receiving" sets in th state.
An unlimited field presents Mself la the
sending out of concerts, musical - enter
tainments of. all kinds, lectures by nsv
ttonal authorities and local oollece ex
perts. rTher are at present over 0
amateur radio stations in Pullman and
many , of those, are equipped for "tak
ing" lectures, 1. musical entertainments.
news and other features sent out -from
stations . throughout the West !
Many - local ; citizens are Joining th
student;, radio bugs" in their deep In
terest. in' this fast-developing science.
" v ' - i - - :' ! i
The American Society of Com nosers.
Authors and :i Publishers was recently
advised by Its counsel,. Nathan Burkan,
New Tork, that -ia his opinion the per
formance of copyrighted . compositions
over-the radio constitutes a publlo per
formance for i profit It therefore f falls
withia the class of performance-for th
privilege of which the copyright owners
are i entitled to a revenue, Mr. Burkan
states. ; The society is said to have
warned mlt broadcasting stations 1 that
any Infringement may be the subject of
prosecution. ' The organisation tis now
arranging f or th assessment of a per
forming rights tax. - -1
On of the radio freaks of Seattle is
a radio bicyel built by John Adams, i 14
year old high school, boy. : An ' antenna
is rigged on the. handlebars, the tanlag
coil, wound on an oM cylindrical phono
graph record rand wired to the handle
bars and th rest of .the apparatus: is
secured to the frame of the blke By
the use of a trail wir Adams forms his
ground and is able to listen to -on radio
broadcasting J while merrily ; Jogging
along oa his blcycl, - -- . :
HO AERIAL HECESSAEY !
Th Wolf Aerial attaebmeot abtas eaa to
noact to bt eteetxas Usht soekat aad maeSve
m sad aass (run the sir with , tout R.mm
fUeetrteuf set. gave east, ef all aerial- censtran
tkm. - Ho esanr esd -fsohmof. --Th attutfa
Bwat comas raady to aaa, Jast soasect ta ierJal
poet ol tartar aat. ,:.L--
MTwr s-aaraaieaa, r rnea poatpaid.
TNI woir udm iMMia "
; Sonera aioW- ' -i- OetMW.' anoh.
Battery
We are receivihigr reffiilar shipments of
complete
!AM
and parts and can now offer immediate
delivery of items needed by the amateur;
IJ. J. VALSH ELECTRIC CO.
106 Fourth St, Bet Stark and Washinirton
Navy Declared
Supreme in Its ;
Radio Stations
ivhvJ - I1
Washington, ilay iO. L N. SI) De
spite th maulings" It "has "received at
th; hands of the armament, conference
and .congress, th United - States navy
stands supreme today in on respect, at
least its system of high power land sta
tions for radio- telegraphy is the most
complete of all the naval establishmen ta.
The navy's station at Arlington, as-signed-a
-wave-length of 17.145 meters,
is one of th most powerful in-the world.
Operated , by remot control, by . meant
ef keys In the navy building- her, the
Arlington station is depended upon day
in ; aad - day . Out to' transmit messages
over a radius of about 6S00 miles. This
rang includes the extreme eastern end
of the 'Mediterranean sea; and the -same
territory also: can b reached from the
opposite direction br the navy's Philip
pine station - at 'Cavite, which, operates
n ! 13,900 meters, - -1 .
Among the navy's larger units south
ward of the great Annapolis station are
the sending . plants at"; Cayey.' Portol
Rico, using a lOHO-meter wave, and th
station at Balboa, . canal Zone, sending
on j 10.110 meters, Th eastern portion
of the Pacific is covered from the con
tinent by a station at San Diego. CaL,
and another on Puget sound, the former
using waves of 0800 meters and the lat
ter: waves of ? 100 meters. ."OV
In the Hawaiian islands the navy has
two sending stations, one using lLSOO
meters and the other 8875. The navaU
station at Guam, which send oa 9145
meters, and the 11.900-rneter plant in
th Philippines, complete the navy's net
of i radio stations around the world.
Wherever Its ' ships are, likely to cruise
they nearly always will b within rang
of 1 th dots - and - dashes from one or
mora, of th navy's sanding stations., i
The Lafayette station near Bordeaux.
France, using the- longest waves 23,000
meters conceded to be th most power
ful radio station in the world, was built
by! th United States to facilitate Amer
ica's part lai th World . war. but has
since, been sold . to France.! : Its broad
casts are transmitted with ease over the
4000 miles of water and land that sep
arate Bordeaux from .Washington, ai)d
occasionally it has been' heard in French
Indo-Chlna. 600 miles in the east -' The
commercial station recently opened oa
Long Island, r usin 9 the second - longest
wave . in use, 19,000 meters. Is expected
to challenge the Lafayette station's title
to first place when additional units are
added. - The Long Island station Is used
for transmitting messages'to Germany,
about 4000 away, - ; i .-.
The British navy, ' time honored
mistress, of 4 the seas," in direct con
trast to the American -navy, does not
maintain a system of land stations of Its
own. bat uses those of the British post
office. - Though thes postal stations
practically encircle the earth they do
sof in much smaller "Jumps' than those
of the United States navy aad therefore
use less powerful stations. -:
Seven of th IS longest-wave stations
which '- follow Annapolis : axe In the
United States -or its territories. They
are commercial stations at Barnegat.
N; 14,800 - meters ; St James, Long
Island, 1.43 ; ' Kohuku. Hawaiian
islands.- ICS 00, and Tuckerton,. tf. J,
15.JO0; th nary station at Cavite, Phil-
ippin islands and commercial stations
at Brunswick. N. 11,600 meters, aad
Bolinas, Cal 13,810 meters,
Numerous United States ; army send-
Iiur, statlens. operatinsr on wave lengths
from a few hundred to 10,000 meters,
are v scattered . over - the - country. The
postofflea department, at its several sta
tions, sends on waves for the most part
between looo and ooo meters long.
;HarrisburgV Pa--My 20. TJ. P.
dally radio broadcasting servica for fhe
farmer of Pennsylvania, whica Will in
dude Pennsylvania market reports and
other agricultural tafornrntloa. has been
Yariocouplers $2.50 - -
Latest i Variometers
. Grid Condensors .
.Aluminum Sockets SI
KTECiAi parts BtrriT Ton xsr
H SET I
Hi M. H. Electric Co.
j ) 31 N. FIRST ST.
jBrOadwax leU - - PftrUasd. Oregon
ADIO
IJUCEplATK DEiaTEBIES
- HIGH-GHADE BABIO
AEPABATCb A3TD SUrriilES
Acme ; Products
11$ CHiXBEB OP COXHZSCX
1 .! : f an m tJ
eUeettiaf set eealsletelj tattall,
-M-:-- . - la Tr.aai. " - l J
uuaraateea u new an nie Locur
cm tics sting. a.uaic and JNews. i
ttl n 1 . BS lit-
. Sit Oraad Ave, ITear B. Jlala
t k East Kf4) k --v
'-!;bs. 7bb Jlala tm
Itadio Farts
11 " - :
m
planned by i th Pennsylvania ' depart
ment of agriculture and : th : Pennsyl
vania stat police, -i 4-Cv -3i': i ,-Kr;vi
The, eervic wUl be iastltttted some
time .: this : month '1 and will , coatinu
throughout the year. - General plans for
this service were arranged at a con
ference between Secretary of Agricul
ture Fred JElasmussea and Mayor Lynn
G. Adams., superintendent of th' stat
police. " , ' .
- Th i Pennsylvania stat 1 polic now
hav Installed , at Harrisburg a ; radio
broadcasting station. that Is on or th
most powerful In the United States. The
station will,: each evening at a specified
time., broadcast agricultural laformatioa
throughout ' ; this - aad - adjacent atates
which will be Of value to the farmers. --.
This' broadcasting service will prove
of tremendous value," said ' Secretary
Rasmosaan. : Tt: wllf prevent' bur farm
ers from rushing their products to mar
kets that ar glutted, will tell them each
day where there Is th greatest demand
for their products, aad will generally aid
in solving marketing problems.' '
i" ::-.'"'A ! . f-': ;.!. : ---g'-l j .j, N:-."
Eugroe The application Of tr. Si XX.
Donahue for permission to string radio
wires from his dental; offices in-i the
Zum wait building across' th street was
denied by the city council Monday eve
ning upon the advice of O. H. Foster,
city attorney, who believes there is dan
ber of too many radio wires becoming a
nuisance In Eugene. ' n. .
limz it?
f t . , . COVPZ.BTE STOfsr
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AMI;
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147 Fourth, Between Alder and Mcrriscn
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