OCR Text |
Show la. above, plcturf Is an expert ' the from material fadlo oji plant of the General Electric HOTO Insert "that of J. C.Palnter, N..Y., who company at' Schenectady, has Just arrived ' In Salt Lake toald in technical problems connected with the Installation 'and distribution of broadcasting and" receiving wireless telephone 'apparatus. The General Electric company is manufacturer for the Radio Corporation of America," the' largest distributor of radio telephones In existence. Locally these firms are represented by the Capital Electric company where Mr. Painter will have his office. The expert has been with the G. E. for five years, two years of which .he has spent in the radio Tesearch laboratory. Radio has already captured the east," he said, and would be a great deal more In use ln thlrsectton if we1 could get sets and equipment to fill ordera Many, of course, have taken to radio as a new magical fad but the same was true with the wired and the automobile in the be . - m fre-ma- quency alternating currents are made' t0 fi.jw ln a wire erected m the air lit accordance with a system of signals or speech. These alternating currents cause disturbances In the surroundjng air; br In other words, send out graves in all directions. The waves are called electromagnetic waves; When these .traveling "waves strike another wire or system of wires erected In the air or some arrangement similar to . nectlons to the receiver. The bodies) the above, alternating voltages are set of these people form a capacity across up In the wires of the same frequency the set and in connection with the ad- as the alternating current at the justable parts in the set wnich will transmitting station whlg.h produced be explained later. It Is possible to reAfter' the voltages are ceive the waves sent out from the send- present in the receiving Antenna, Jtls outsee an we to do that 'two thlngs;Flrst.. to Thus, station. necessary ing "a.lways t"iHake the current which flows In the side wlre'or'antenna lsnot : necessary, particularly for receiving : antenna because of the voltages, as loud local signals and where the re large as possible, and second,' to, Is in a wood frame building. A j vide soma means for transforming few turns of wire wound In a large these currents into Intelligible signals., first of these "requirements- is ac loop arrangement may be' used also In explaining" "the principles of Ra-- j dio communication Mr. Painter said: Let us observe the above illustra- tlon. Here we have a simple receiv- ing set but instead of using an outside wire or antenna, as was considered necessary a few years ago, we .have a 'group "7of " people holding" hands around the set with the end ones hold Ing to. the antenna and ground con and of communication at the coat complete combination receiving These transmitting radio sets for sale. were but originally surplus Other States May Follow Lead. . sets are nn the wooden fleetof the innllii Several states besides hsans board and cost approximately $5,000 . each. All sets, which are said to he in excellent shape. Include a recfeivlng set, a 1 kw, spark transmitting set, with a storage batthe tery. They are located at most-oprincipal, jports,.. but the., bulk. of .the la located is practically the- - only means of ef- surplus equipment Va., where they may :be inspecteor communication, fecting dependable Proposals for complete sets should Stations to be Used to Broadcast Weather, Crop and the destruction of existing .systems is d.be addressed to F, P. Guthrie, radio threatened." ConV Market Reports and Official Statd Messages in section, board, Washington, Michigan Is falcly well supplied with D.C.' .shipping ' stations .today, there benection With its Police Force and Other Activities. , transmitting seven three technical ing experimental, and training,-fogeneral public, six i stations and two special unto broadcasting 10. stats ie Michfgan June .""WASHINGTON, probably. 'the first For the district with headradio system of its own, although amateurs. dertake th establishment of a state-wid- e quarters. In Detroit there are 3,393 Stats licensed amateurs, but, they are not seme municipalities. Including Detroit, have broadcasting stations. all In. Michigan. , officials recently Submitted a request to the. shipping board for 1 comCombination Set for Sale; plete transmitting' and receiving sets such as were, designed for thei The radio section of th shipping boards wooden 'war fleet and completed at a cost of $6,000 each. These With a new and powerful radio sets will be distributed and Installed lathe principal. cities and ports of board has today about 200 of these telegraph apparatus being installed on Rundemandeh, a 2,500 fobt mountain Michigan along the Great Lakes, It. Is understood. , . at Bergen Norway, It Is believed that 7 The Sets are now packed and ready direct communication with' America As ail emergency systa ship to Michigan, for broadcasting broadcasting. will be possible. The radio telegraph tem for official use In case of' disorand weather. ctoD will hXve d 3,000 kilometer.. radius market reports,. ai)d der ror .a state-wid- e strike, Michigan ' An wireless offlciu sucs messages in connection will have a dependable means of at hand. phone for communication with Eng with 'Its. police -- fore,- forest rangers, communication alwaya sets land and Continental Europe will also Sold by Dealer Everywhere which are shipping board shipping, coast guard,, and other ac- 1 The be established.' The Improvements kw. spark transmitters, have tivities which require communication Beautiful .finish panel. If sudlon represent an investment of abotit $25 with places. The most detectorsa are used Inradius. Btack, brown, and mahoganit. 000, and are expected to be completed receiving. valuable function of this Michigan Best insulation foVrsdio, resists by June 1, according to Consul George Other states will undoubtedly folradio MW however;, will be Its operawarping, Nicolas of Bergen. tion In the event of abreak In. the low Jthe lead., of Michigan, officials of Standard Dials S and 4", hoard and communication the due systems, Relieve, they shipping regular TWO NEW ARMY STATION'S. knobs, sockets, baaas, etc. ll o rwlirterrstorm'e 'especially, arvantieloatlng requests for setsf rom -Two army radio stations have, been pHbnvrlnrMrAUiw the wires mlgbt. be down, such states, as Texas, which has a American Hard Rubber Co. a dosen, or more radio stations could greater expanse of country In proporadded Jo the. signal corps radio net; New York, N. Y. llMareerSt. one at" Jefferson Barracks, Missouri, maintain a system of communication tion to Its population than any other and the, other at Fort Leavenworth, practically throughout the state either state, and Mississippi where the peKansas. operated ftom point to point or by rjodlc floods cut off the ordinary ur ' ' imiwii: prao-tical- 600-mi- ay ly -- le . ' . formal-though-a- - , ; - - r"-- 'I Ifsentinthe manner by commercial rate on land RADIO SATES II. S. t In the event of a collapse of the. lines.. For April 2,249 messages, com- commercial wires and radio stations or in an emergence, great possibilities are prising 13 (.316 words, were handled seen P the growing arms net, as nrae-tlcal- ly i cv.-rby signal corps radio stations, estimatse:t(on of tber country ed as a saving of $2,117. The saving could be reached through It and thfi would approximate $18,000 a year. nine corps area local nets. Every With the Installation of a powerful branch, even the field detachments of 1 n A, - .on rortDuglae,8altthe armyr- - ls In conetant eommunloa-TLak-e City, May 9, which. Is now f tlon with headquarters at Washington. N commercial work is handled, only ,C,nn BIG SOM dio j ill ment $ 3,354, by carrying over 20,000 . with an of 6,000 watta, a dtetanoe words In messages, which would have of 6,000 Input mile may be reached. cost that amount old . . - 1 SIGNAL CORPS of much time, and money. staSes-wherera- '" I - Michigan have made inquiry at the radio section of the department of commerce concerning, the licensing of state radio systems, although no specific applications have yet been received. The department is of the opinion that point to point radio stations should be , - prfi-cetv- er , ps of-th- , j j Planning First State mitter. 1 . t .. . Various combinations and arrangements of the above requirements particularly the tuning devloea are used In receivers at present, hut the fundamental principles are the same. Furthermore additional devloea are often used, particularly In connection with . the vacuum- - tube detector to strength- en or make louder the slgnalk or p e to Improve the quality r station. ; signals. .' It Isn't necessary, however, "To sum up we find that the equipment necessary to receive radio signals for persons desiring only to enjoy the either telegraph or telephone since the broadcasting concerts, etc., to study or receiving appartus for both Is exactly understand the functioning of ,thsao the same, consists of these four parts: additional devices. 11) Antenna system which picks up Radio Corporation . Equipment Is the traveling ether waves. 7 distributed In this territory by .the (2) Tuning apparatus which makes Capitol Electrio Co. and can be e 7 the received, currents from the par cured, from any. of. the electrical and t station desired as radio supply dealers throughout tho v ' large as possible. entire Intermountaln section. Tie la- (3) The detector which detects the stallation of the Radio receiver la the presence of the receiving currents or home la a simple matter, complete converts them Into a form suitable seta can be purchased from V to. operate a telephone recelvsrvT tllO.OO'to $600.00, according to iha";'7 (4) The telephone, receivers which individual desire or requirements. - te . In-T- mineral to get a sensitive spot. The other type Is the vacuum tube which Is a better detector and easier to keep In adjustment, but which requires batteries to operate. Either type of detector may be used for receiving radio teleThe current which phone signals. comes out of the detector operates the telephone receivers reproducing the telegraph or telephone signals which were sent out from the transmitting . es. the-wav- qulres no battery to operate it but re- change , the received , currents Into quires adjutment of the point on the sound such as was put into the trans- complished by what Is known as tun- for one particular wave or frequency. For tuning It is necessary to Thus the first part of any radio reing have connected In the antenna circuit ceiver Is the tuning, part whose funca coil of wire known aa an inductor tion Is to make the current from the or a condenser which consists of metal received .waves as large as possible. plates near eacn other', but insulated In other words, tuning t is, simply adfronv eac.h, or both of these devices justing the receiving apparatus for may be used. These are so made the frequency of the. transmitter! to as to be easily, adjustable. In order to be received from, so that it will get make the current flow In the antenna maximum current from that trans, . system a maximum. The reason for mitter. . this result is because turns of wire The second requirement in receptend to oppose the flow of alternating tion - which- - follows after - provisions current while the condenser has the, jjave been made for making the effect, and when the two are rent as large as possible is to- - convert made equal they neutralise each other tbis high frequency alternating cur- and the flow of current becomes as rent into direct current or low frelarge as the pure resistance will per- quency current. This Is necessary bemit. The question may be asked why cause the high frequency current will use either? The answer is that in us- not operate the telephone receivers ing neither- the- - receiving Btatlon Is and direct, as low frequency current tuned for. one particular frequency will.. The device for this requirement of alternating current and cannot be Is practically a rectifer and is called detector. At present there are two adjusted to any otherTTn other- words, there is a fixed inductance and ca- - j kinds of detectors In use. One is a however crystal detector which consists of a pacity In the antenna wires arranged and without some means of small piece of mineral with a sharp to with values metal poiqt or some other mineral rest.-- , respect adjusting the each other lt'woudl always be tuned '"Ing upon It." This fornl of detector-re- - Wireless telephones have stead of the several people holding ginning. come to stay and already plans are hands. being made in the east- that will make the first place we should consld-theavailable, useful, practical means er a simple transmitting station. By to the average means of certain apparatus high of communication I Great Net Soreads From 4! n . army andmeval dlspatche be- -' Station at Fort D. A. Ing carried, but all commercial traffic Wyoming, the main could be handled In time of need, m4 ;n transcontinental radio Coast to Coast circuit will be a large amount regularly In dull hours. I completed. - With .stations '' e already Smaller stations are going In dally; New at York of operating LommuniCaand Waehing- Lowering ton, communication on the cross coun- recently" a station was opened at theer Aberdeen. Md., and try circuit Is routed a follows: Fort airshipatfield, Costs. . tion the Morgan Ordnance depet. Benjamin Harrison, Indiana: Chicago; South Amboy. N. J. The signal corps Forts Omaha, Douglas and Russell, to plans shortly to have a 60 station eerv-l-ce San Francisco, .- v. In operation. Whlle tho Naval Communication Soms of the army stations are sendELLERBECK-UTAService handles all. official .tran; ing 1,000 mile with an antenna Input RADIO BAT1.000 watts, but as a number of the TERIES are 8. Gqyt. approved. 41 oceanic radio messages,' and most of of new stations are to be higher powered. Main Srteet. U;Adv. the shore to ship communication, the army Is far from Idle In Us radio acA great radio tivities. net now stretches practically all over the United States, with 43 large sending staBOYS! DODGE BROS. tions located In the nine corps areas of the army. Thie net. Is controlled by the signal corps, under the direction of Major General George O'. Squier, an eminent soldier and scientist, credited with many of the Inventions and devices which have made radio and wired Free Classes for Amateurs. wireless practical. At present thfi Slgrral'Corps is clearing practically 5 to 6 P. M. Daily Well Teach You. ovrtnmeut communlca-- 7 tlona.-andcn-ly S the gIgnatureof"Secre NoObIigatiOiuAtAILr tary Weeks It needed to make the SigWtr-.l- ci 245 SOUTH STATE STREET. nal Corps radio headquarters the message center of the army. Catalogue Price, Phra In two months the raJlo communiV cation system ha Saved the govern. Renltt of a X,4ncl5(h-J- i ' ' an-oth- -- - . H SEE j ' |