V01.1V, No.2 February 1975 Monthly except during July and August Price 014.50 yearly Single Issue 750

Second-class postage paid at Dallas, Texas Office Address: 9820 Silver Meadow Drive, Dallas, Texas 75217

THE NEWSPAPER FORTHE HOBBYIST OF VINTAGEELECTRONICS AND SOUND

HE HORN SP

Guglielmo MarconiON December 12, 1929, Senatore Guglielmo Marconi, who

sent the first wireless message across the Atlantictwenty-eight years ago, spoke into a microphone in Londonand his voice was heard throughout the United States.Graham McNamee, in New York, introduced Marconi toAmericin listeners.

Engineers of the National Broadcasting Company and theRadio Corporation of America were successful in pickingup a short-wave broadcast from Station G-5SW, at Chelms-ford, England, of Marconi's voice, and it was rebroadcastthrough a chain of forty-six stations extending as far westas Denver. The short-wave signals were picked up at River-head, Long Island, and then routed to the New York NBCstudios and the network. The rebroadcast was the sixthsuccessful attempt of this organization to rebroadcast aprogram from abroad. WEAF and WJZ were the New Yorkoutlets.

Following is Senatore Marconi's address delivered from the Lon-don studios of the British Broadcasting Corporation and rebroadcastin the United States by the National Broadcasting Company.

THE EDITORS

T gives me very great pleasure to recount to Americansthrough the courtesy of the National Broadcasting Com-pany of America and the British Broadcasting Corporationmy experiences at the time when I first attempted and,

indeed, successfully, to send radio signals across the AtlanticOcean twenty-eight years ago, almost to the very hour.

From the time of my earliest experiments I had alwaysheld the belief, almost amounting to an intuition, that radiosignals would some day be regularly sent across the greatestdistances on earth, and I felt convinced that trans -Atlanticradio telegraphy would be feasible.

Very naturally I realized that my first endeavor must bedirected to prove that an electric wave could be sent rightacross the Atlantic and detected on the other side.

What was at that time a most powerful wireless station wasbuilt at Poldhu in England for this purpose and an antennasystem was constructed, supported by a ring of twenty masts,each about two hundred feet high. In the design and con-struction of the Poldhu station I was assisted by Sir AmbroseFleming, Mr. R. N. Vyvyan and Mr. W. S. Entwisle.

Another similar station was erected at Cape Cod in Massa-chusetts. By the end of August, 1901, the erection of themasts was nearly completed when a terrific gale swept theEnglish coasts, with the result that the masts were blown downand the whole construction wrecked. I was naturally extremelydisappointed at this unforeseen accident, and for some dayshad visions of my test having to be postponed for severalmonths or longer, but eventually decided that it might be pos-sible to make a preliminary trial with a simpler aerial attachedto a stay stretched between two masts 170 feet high and con-sisting of sixty almost vertical wires. By the time this aerialwas erected another unfortunate accident, also caused by agale, occurred in America, destroying the antenna system ofthe Cape Cod station.

I then decided, notwithstanding this further setback, to carryout experiments to Newfoundland -with an aerial supported bya balloon or kite, as it was clearly impossible at that time ofthe year, owing to the wintry conditions and the shortness ofthe time at our disposal, to erect high masts to support thereceiving aerial. On the twenty-sixth of November, 1900, Isailed from Liverpool accompanied by my two technical assist-ants, Mr. G. S. Kemp and Mr. P. W. Paget.

We landed at St. Johns, Newfoundland, on Friday, Decem-ber the sixth, and before beginning operations I visited theGovernor, Sir Cavendish Boyle, and the Prime Minister, SirRobert Bond, and other members of the Newfoundland govern-ment, who promised me their heartiest co-operation in orderto facilitate my work. After taking a look round at the varioussites, I considered that the best one was to be found on SignalHill, a lofty eminence overlooking the harbor. On the top ofthis hill was a small plateau which I thought suitable for flyingeither balloons or kites. On a crag of this plateau rose theCabot Memorial Tower and close to (Continued on page 5 )

TIE WORLD'SFIRST FULLTIME

RADIO ANNOUNCERby

RAY POINDEXTER

Publisher. Jim Cranshaw

214-286-1673

MORE FLOESEVERY QU:.RTER

To give more need-ed space in The HornSpeaker, especiallyafter going to thesmaller format, theMarch, June, Sep-tember and Decembereditions sill beplanned for 12 pages.During the period ofa year the newspaperwill have more space.

Harold W. Arlin, I4J KA, Pittsburgh, the world's first

ful¡time radio announcer

Harold W. Arlin was an elec-trical engineer working as a timestudy supervisor in the manufactur-ring division of Westinghouse Elec-tric in East Pittsburg, and it wasonly natural that he wanted to ob-serve the operation of the company'slatest innovation. He was twenty-five at the time and thought thathe was established vocationally.

He had been born in La Harpe, Ill-inois, had moved with his parentsto Carthage, Missouri, at the ageof four, and had attended a two -room elementary school, CarthageHigh School, and the University ofKansas.

The Westinghouse Company hadput KDKA on the air the night ofNovember 2, 1920, After Dr. Frank

2 The HORN SPEAKER,.,,, 9820 Silver Meadow Drive, Dallas, Texas 75217

Conrad, their assistant chief en-gineer, had received considerablerecognition with his broadcastsover amateur station 8XK. KDKA wasthe nation's first regularlylicensed commercial station witha regular program schedule. Theopening night feature was thebroadcasting of returns of theHarding -Cox presidential election.During the following nights, thestation had no regular announcers.Members of the company's publicitydepartment filled in on the air.

Harold Arlin went up to KDKA'ssmall transmitter penthouse on topof the plant. During a recent tele-phone conversation from his home inMansfield, Ohio, still strong -voicedat seventy-eight, he related de-tails of his visit:

"I went more or less throughcuriosity and found out they werelooking for an announcer. Theywanted to know if I wanted to tryout. I said, "Yeah." I thoughtmaybe I'd do this for a week or two,and it ended up I was there aboutfive years."

Arlin "tried out" on the airin contrast to the off -the -air audit-ion methods of today. "Actually,we didn't think much about techrnique," he said in his conversat-ion. "We didn't realize that wewere starting something that wouldexpand and grow like radio did.The first thing we had was thebroadcast of phonograph recordsand the announcing of baseballscores. Then we started bring-ing artists (musicians) out fromPittsburgh. And then there werespeakers."

For about six months, KDKAdidn't have a regular studio. Re-cords were played from the trans-mitter room, and remote broadcastswere carried from such places aschurches, theatres and hotels. In

mid -May of 1921, the decision wasmade to include live programs froma studio. The plant auditoriumwas used at first, but its acousticswere not suitable for the desiredquality. Next, a tent was pitchedon the roof beside the penthousewhere the equipment was located.This arrangement was satisfactoryuntil an autumn wind toppled it.

Although the canvas structureserved well for the purpose ofresonant sound, there were prob-lems. A freight train passed at8:30 each night, and its whistlebecame a part of the KDKA programat that time. On one occasion, apopular tenor almost swallowed aninsect while his mouth was wideopen for a high note. His remarkswere not suitable for broadcast,and the operator quickly shut thestation down.

Much about radio acousticswas learned from the use of thetent studio. Engineers utilizeddrapes and sound board to the bestadvantage in a new indoor studio

that was put into use October 1,1921. Even this facility was notan absolute guarantee against on -

the -air mishaps. Announcer Arlinwas reading baseball scores onenight when a dog ran through thestudio, knocking over the micro-phone, upsetting copy, and addingbarking sound effects to thebroadcast.

Because Arlin was the originalfulltime announcer, he is creditedwith many "firsts." He did thefirst broadcast of a major leaguebaseball game, describing the con-test between the Pittsburgh Piratesand the Philadelpha Phillies inAugust 1921. He had followed base-ball as a fan and possessed a goodworking knowledge of the game.The play-by-play broadcasting ofcollege football was added to thelist of firsts with the openinggame of the season between Pittand West Virginia in 1921. His

second football broadcast, whichmatched Pitt and Nebraska, is evenmore memorable to him. "I got alittle excited and yelled into themicrophone so loud that it knockedthe needle off the modulation met-er, and we were off the air forseveral minutes," he said.

Mike fright was very commonamong guest performers and speak-ers. Arlin stated, "I found outthat a lot of famous actors and act-resses didn't have the inspirationthey got from a visible audience,and they were just lost at themicrophone." Once a newspaperreporter brought Babe Ruth to thestudio while the Yankees were intown for an exhibition game. "He

had written a little speech forBabe," Arlin recounted. "I intro-duced Babe and he got cold feet.I took it and read it myself. I

received a lot of letters tellingme what a wonderful voice Babe had."

Arlin had no such problem withWill Rogers. The cowboy humoristtook a copy of the Pittsburg Sunand talked for fifteen or twentyminutes about the news headlines.He mentioned that there had beenanother mail robbery and addedthat this type of criminal act hadnot happened during the tenure ofthe preceding postmaster general.When asked by Arlin how he ac-counted for that, Rogers answered,"Well, no one knew when the mailwas coming through."

Other celebrities introducedby Arlin on KDKA included WilliamJennings Bryan, Marshall Foch,David Lloyd George, Lillian Gishand Herbert Hoover.

In 1924, Arlin received themost votes in a contest to selectthe world's most popular announcer.Since KDKA's shortwave broadcastswere heard on several continents,a British newspaper called him "thebest known voice in Europe."

After being on the air almost

every night for about five years,Arlin accepted an offer to head upa department of the Westinghouseplant in Mansfield. He has beenvery active in school and civic af-fairs of the city. He served as

president of the Board of Educationfor sixteen years. Arlin Fieldwas named for him after he spear-headed a drive for construction ofthe stadium. He has also held theoffice of district governor ofRotary International. Since hisretirement in 1961, he has visitedevery continent.

His retirement period wasclimaxed in 1972 (fifty-one yearsafter his initial major leaguebroadcast) when he was invited toannounce a couple of innings of aPittsburgh game in which his grand-son was a pitcher for the San DiegoPadres. He is still invited toother special occasions.

Arlin enjoys quoting a basket-ball coach who was at the Univer-sity of Kansas during his studentdays: "You start to get old whenit takes you longer to rest thanit did to get tired." If Harold W.Arlin has reached that point inlife, his telephone voice and per-sonality do not reflect it.

LETTERSEDITOR'S MALBAG

Editor,The Horn Speaker:

I read with interest your art-icle entitled " Morris N. Beitman-The Radioman Who Helped Thousands"in the November Horn Speaker. How-ever, in the art1 e, Brent Ding-man states, "Volume FM, not Volume7, was published in 1947."

Allthough, long since out ofprint, Volume 7 was in fact pub-lished, and consists of more ofthe same type information as theother Volumes in the Radio Series.I know, as my set of Supreme RadioManuals contains this volume.

I assume Volume FM was publishedin addition to Volume 7, and is asMrs Dingman says, really TV -l.

Sincerely,Russ Harvey2656 LaCruz Ave.Yuma, Arizona 853611

Pear Jim:Would you please print this

letter? I need help in locatingthe following radio books.

Radio Up To The Minute 1926,J. R. Irwin.

Radio For 1\11, Hugo Gerns-back.

Radio Receiving Tubes, MoyerUostrel.

Practical Radio Repairing Hints,John R. Rider.

(Continued on page 4)

The HORN SPEAKER....,, 9520 Silver Meadow Drive. Dallas, Texas 75117

SCIENTIFIC INTELLIGENCEEdison's Phonograph.-Mr. Thomas A. Edison, the

celebrated electrician, has Invented a talking phono-graph, which speaks with great clearness and loudenough to be audible at a distance of 175 feet. Thespeech Is also recorded by diagrams OR a revolving disk,so that it can be stored up and read at leisure. Theinstrument is still in its infancy, but bids fair to becomea rival of the telephone, particularly as it is self -recording.

THE LATEST SCIENTIFIC WONDER.EDISON'S SPEAKING PHONOGRAPH.

FOR a year or more the scientific world has beenexcited from time to time by the discoveries of

Thomas A. Edison, who has made electricity a

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NEW JERSEY, -PROFESSOR EDISON EXHIBITING THE PHONOGRAPH TO VISITORS, AT HIS LABORATORY, MENLO PARK.

special study. One of his first inventions was theautomatic telegraph, which was received as quitea marvel. This lie followed in turn with the quad-ruplex and sextuplex system of telegraphy, thecarbon telephone, the stock indicator, the electricpen, the airaphone, and lastly and more wonderfulthan all the others, the speaking phonograph.Although his discoveries embrace a far greaterrange of applications and instruments, these are theones with which the public are best acquainted.

Mr. Edison's workshop is located at Menlo Park,on the line of the New York and Philadelphia Rail-road, in New Jersey. The building is a long woodenstructure, facing to the east. A dozen telegraph.wires are led into it by sentry -like poles connectingwith the main line along the railroad. The front doorsopen directly into the office. The second story isone room, in which Mr. Edison carries on his ex-periments. It is an immense laboratory, filled withelectrical instruments. A thousand jars of chemi-cals are ranged against the walls. An open rack,filled with jars of vitriol, stands in the middle ofthe room. The western end of the apartment isoccupied by telephones and other instruments, andthere is a small organ in the southwestern corner.

it was here that our artist caught Mr. Edison inthe act of completing his improvements on thelatest wonder, the speaking phonograph. This isan instrument that will record and reproduce anywords or sounds pronounced or made within theproper distance of the mouthpiece of the appara-

WEI. IIWWIIIIIIIIIIIIIIIIIIIIIIWIIIrIIItNNiIIIÍÍIIIp Í

NEW JERSEY.-EDISON'S PgoNOGiIAPH FOR RECORDING AND REPRODUCING SOUND.

tus. This apparatus is exceedingly simple. It con -1 lists of a cylinder four inches in diameter and ten

inches long upon a shaft. A spiral groove, like thethread of a screw, is cut in the surface of thecylinder from end to end, and the same kind of ascrew is cut in the shaft carrying it. Over thiscylinder is secured a sheet of paper or tinfoil.Immediately opposite the cylinder, on an uprightarm (4), is a speaking tube, one end of which isclosed by a diaphragm (I). In the centre of thediaphragm is a small point (2) like that of a pin,arranged so as to be exactly opposite the groovesupon the cylinder. When the cylinder is set in motionit rotates, and at the same time moves endwise.

Mr. Edison explains very clearly the method ofmanipulating the phonograph." This mouthpiece is simply anartificial diaphragm. Turn it overand you see this thin disk of metalat the bottom. Whenever vonspeak in the mouthpiece the vibra.tions of your voice jar this disk (3),which, as you see, has in its centrea fine steel point. Now for theother part of the machine. Hereis a brass cylinder, grooved some-thing like the spiral part of ascrew, only much finer. I wrap asheet of tinfoil around the cylinder,and shove the mouthpiece up to itso that the tiny steel point touchesthe tin -foil above one of thegrooves. I then turn the cylinderwith a crank, and talk into themouthpiece. The vibrations arousethe disk, and the steel point pricksthe tin -foil, leaving perforationsresembling the old Morse tele-graphic alphabet. They t re reallystereoscopic views of the vmce, re-cording all that is said, with timeand intonations. It is a matrix ofthe words and voice, and can beused until worn out.. Now let usreset the cylinder, so that thesteel point may run over the holesor alphabet made when we talkedin the mouthpiece. The thin metaldisk rises, and, as the steel pointtrips Irom perforation to perfora-tion, opening the valves of the dia-phragm, the words, intonation andaccent are reproduced exactly asspoken through the tunnel "(5).

The instrument is so simple inits construction, and its workingsso easily understood, that onewonders why it was never beforediscovered. There is no electricity about it. It canbe carried around under a man's arm, and its ma-chinery is not a fiftieth part as intricate as thatof a sewing -machine. It records all sounds andnoises. Mr. Edison blew in at intervals, and thematrix recorded the sound and returned it. Hewhistled an air from the " Grande Uucheese," and

back it came as clear as a fife, and in perfect time.He rang a small bell in the funnel. The vibrationswere recorded, and, on resting the cylinder, thetintinnabulatory sounds poured out soft andmellow. Mr. Edison coughed, sneezed and laughedat the mouthpiece, and the matrix returned thenoises as true as a die.

Mr. Edison says the machinery is designed forpractical use by business men and lawyers, etc.He is now making a new machine which will havea plate sufficiently large to receive 500 spokenwords. Thus a man may dictate half a dozen lettersbefore leaving his office, and his clerks may writethem out in his absence. If he should wish to saymore, he can remove the first plate and put in a

SHEET OF TIN FOIL ON Whichi TILE' OUNDS ARERECORDED BY EDISON'S PHONOGRAPH.

-econd, and so on up to any number he may re-quire. His improvements of the airograph. hoclaims, will enable navigators to converse witheach other during a storm at sea, while their shipsare as far as three miles apart. It can also boattached to Bartboldi's statue ut Liberty to i,

erected on Bedloe'a island.

Originally appeared in Frank Leslie's illustrated Newspaper., March 30, 1878

The HORN SPEAKER,.,., 9820 Silver Meadow Drive. Dallas, T. 70174

LETTERS(Continued from page 2)

Radio Frequency Amplification,Kenneth Harkness.

The Home Radio -How To Make &Use It 1922,

A. H. Verrill.Gernsback Radio Encyclopedia,2nd. edition published in the1930's, 352 pages.Gernsback Official Radio Ser-vice Manuals, 1931-1932-1933copys.

Thanking you in advance forthis favor.

Sincerely, BillWilliam E. HemrickRoute 1, Box 93ATerra Alta, W. VA

26764

clIto C lass cc

(52ad u by J. W. F. Puett

Remember how excited you werewhen you added that fine old set toyour collection? A new set alwayssparks our enthusiasm, but how manycollectors are familiar with thehistorical significance of the lit-erature published by certain classicradio manufacturers?

For instance, in addition to mag-azine ads and articles, McMurdo Sil-ver published The Silver Times andE. H. Scott sent The Scott News tohundreds of customers and prospectsall over the world. Most of thehistory of these companies is pre-served in the pages of these month-ly periodicals. The next time youpurchase an oldie from an estatesale or antique dealer, I suggestthat you don't forget to ask ifthere is an instruction book or anyother literature that goes with theset.

Scott published many beautifulluxurious sales brochures in thethirties and forties. He also pub-lished special brochures such as,"A 24,000 Mile Radio Test On LandAnd Sea," (1933) and "Special De-luxe Installations" (circa 19110).

on. the AirSome collectors have been

beefing about their letters sentto other collectors being unan-swered. Of course, I believe,that in case the original letter

is lost a second letter should besent in case there is no reply.

I understand that S.ARS.E. donot work for Canada or any foreigncountry since they must use theirown stamp for mailing.

FIND OF THE MONTHby

Ross E. Mason

While going home from work onenight, I over -heard a co-worker say

that he had to go home and cleanout the garage, because it was fullof old radio tubes. So I said, ashe walked by me, "And I'm going a-long to help."

When we got there, he had tubeson his work bench, on the floor andhe even drove on some, so I askedwhere they all came from? And hesaid that they were here when theymoved in over a year ago.

He gave me two boxes full, withmostly type 80, 71A, 47, 45, 42, 27,24A, etc., some were the old styletype.

The sad part for me was, thatmost of my radios use OlAs.

Ross E. Mason6111 So. Georgia Ave.Mason City, Iowa50401

211 GOTIIF,N AGE RADIO

DICTOGRAPH A.C.-D.C. "SILENT RADIO" MODEL 91134 SERIESA 6 -tube (including ballast) "Silent Radio" broadcast superhet.

Appearance of the "Silent Radio" receiver.

The "mystic ear", tucked under a pillow, per-mits individual radio enjoyment without dis-

turbing anyone close by.I! a

Chassis showing location of trimmers.

1;14E -

200V

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10.000 0OHM

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CONTROLp7aqo ia l 0.25-MEG

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59,4/T20%

Schematic

This radio set affords optional loudspeaker (group) or "mystic ear" (indi-vidualized) program reception; the latter is desirable in hospital sick rooms,etc. Service data follow.

Connect the low -potential side of the signal generator to the metal chassisthrough a 0.1-mf. (400 V.) condenser for the following adjustments.

Adjustment of I.F. Condensers. (a) Remove the control -grid lead of the 6A7tube and insert a 50,000 -ohm (carbon type 1/3-W.) resistor in series withsame. Then connect the high -potential lead of the signal generator through a0.001-mf. condenser (paper tubular 400-V. type), directly to the control -gridof the 6A7 tube.

(b) Turn the rotor plates of the ganged variable condenser where no broad-cast station carrier is heard (approximately 1,000 kc.). If this is not possibleconnect a 0.1-mf. condenser (paper tubular) from the oscillator stator sectionof the ganged variable condenser to chassis.

(c) Place an output meter (copper -oxide type) across the "mystic ear"terminals with the speaker control switch in a clockwise position so that varia-tions in signal output can be noted.

(d) Place the signal generator in operation, adjust the carrier frequency to456 kc. and regulate the attenuator control of the signal generator so that theoutput signal is low enough to insure accuracy in adjusting the I.F. condenser.

(e) Adjust trimmers T1, T2 and T3 (see sketch showing trimmer locations)to resonance as indicated by the greatest swing on the output meter.

Adjustment of Ganged Variable Condensers. (a) Remove the signal generatorconnection from the control -grid of the 6A7 tube and replace the control -gridlead. Then connect the antenna wire of the receiver to the high -potential leadof the signal generator through a 200-mmf. condenser (mica type).

(b) Set the dial pointer directly at the last long line at the right-hand sideof the dial with the ganged variable condenser fully meshed. Then rotate thereceiver dial to 1,500 kc.

(c) Adjust the carrier frequency of the signal generator to 1,500 kc. and,starting with trimmer T4 and then T5, adjust each for maximum signal output.

Voltage Readings (atTube PlateType Volts

108V1

108V2 105V3 36V4 90Vs -

Exploded view of "mystic ear" construction.

119 V.,Plate

Ma.1.4

A.C.) :C. -G. S. -G.

Volta Volta2.6 54

2.2 -8.4 2.6.05 6.2"

20.0 15.078.0 TOTAL -

*Taken with a 1,000 ohms/volt meter."To be measured across bias resistor.

field, 128 V.; filter choke, 15.5 V.D.C. RESISTANCE VALUES, IN

Unit Pri.Antenna coilOscillator coil1st I.F. trans.2nd I.F. trans.Filter chokeSpeaker input trans.Speaker fieldSpeaker voice coil

AF43

250

350OHMS 0.35 ME6 0.5-

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MF, MA,V

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105

97

Speaker

OHMSSec.

23.0 4.7

1.75 6.1

15.0 15.025.0 25.0

400.0300.0

3,000.03.0

114-

a-MF2000 'FT.

PRIMARYI6 OHMS.SECONDARY15.5 OHMS

EXTERNAREPROOUCCR

YOKECOL

OS - 625OHMS

Ile T10% 5MF25V.

6.25

B

SNAP ANT .ROIL

SwnC- A.C PRIMARY

3000-73oNMS

300B.D4.1 OHARr

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COIL I. FT.2PRIMARY24 5C1NAH5;

SECONDARY24.5 00015

?L ER Iuoc,v120 15) 15 05C COIL

NOTE - 110 V. 7 OHMS OHMS OHMS05 * (E) AD 1.T%1:s

OHMS15 % e .FOR 25<KlEscoNemy

OHMS OPERATION ONLYAC -DC

Ow (ON RI) 614F. 1000' 4['6.10015diagram of Dictagraph Products Co. "Silent Radio" superheterodyne receiver.

-166 RADIO -CRAFT for SEPTEMBER, 1937

The HORN SPEAKER 9820 Stler Meadow Drive, Dallas, Texas 75217 5

RegenerativeBY

William E. Hemrick

A regenerative receiver whenproperly regenerating is one of themost selective receivers known. It

is more selective the more you areable to regenerate. If a verylarge antenna is used it is dif-ficult to regenerate much, in fact,it may not be possible to regenerateat all, due to the long antenna,the moment you begain regenerat-ing by using the tickler coil orplate variometer the set begins tosqueal.

Long antenna means small re-generation and little selectivity,for you cannot employ the veryfeature of the receiver which givesit its selective qualities, regen-eration. With a short antenna itis possible to use considerable re-generation before the squealingpoint is reached, thus the set isextremely selective on a short an-tenna, due to the ability to re-generate and bring its selectiveproperties into play.

Why is a short antenna betterthen a long antenna? A regenerat-

MARCONI

it was an old military barracks. It wasin a room of this building that I set upmy receiving apparatus in preparation forthe great experiment.

On Monday, December 9th, barelythree days after my arrival, I and myassistants began work on Signal Hill. Theweather was very bad and very cold.On the Tuesday we flew a kite with 600feet of antenna wire as a preliminary test,and on the Wednesday we had inflatedone of our small balloons, which made itsfirst ascent during the morning. Owing,however, to the strength of the wind, theballoon soon broke away and disappearedin the mist. I then concluded that per-haps kites would answer better, and de-cided to use them for the crucial test.

I had arranged with my assistants inCornwall to send a series of "S's" at aprearranged speed during certain hours ofthe day. I chose the letter "S" because itwas easy to transmit, and with the veryprimitive apparatus used at Poldhu I wasafraid that the transmisison of otherMorse signals, which included dashes.might perhaps cause too much strain onit and break it down. Mr. Entwisle, Mr.George and Mr. Taylor were in charge ofthe English station at Poldhu during thetransmission of signals to Newfoundland.

On the morning of Thursday, thetwelfth of December, the critical momentfor which I had been working for so longat last arrived, and, in spite of the galeraging, we managed to fly a kite carryingan antenna wire some 400 feet long. Iwas at last on the point of putting thecorrectness of my belief to the test! Upto then I had nearly always used a re-ceiving arrangement including a coherer,which recorded automatically signalsthrough a relay and a Morse instrument.I decided in this instance to use also atelephone connected to a self -restoringcoherer, the human ear being far moresensitive than the recorder.

Suddenly, at about half -past twelve, asuccession of three faint clicks on the tele-phone, corresponding to the three dots ofthe letter S, sounded several times in my

ive receiver is more sensitive tolow signal voltages, that is, itwill amplify low signal voltagesconsiderably more than it willhigh signal voltages.

Although the long antennawill bring in a large signal vol-tage it will not be amplified much.Whereas the short antenna's lowsignal voltage may be amplifiedmany times and thus bring the ult-imate signal intensity above thatof a long antenna.

Weak signal from a short an-tenna is considerably amplified bythe regeneration of the set. Use ashort antenna if your set is theregenerative type, and regenerateas much as possible. You will nothave as much trouble with interfer-ence and the signals will be consid-erable louder.

Club NewsANTIQUE RADIO GUILD OF AMERICA

We are looking forward to re-ceiving more information about thisorganization of Scranton, Pennsly-vania that seems to be nationallyoriented and public relationsminded.

ear, beyond the possibility of a doubt.I asked my assistant, Mr. Kemp, for

corroboration if he had heard anything.He had, in fact, heard the same signalsthat I had.

I then knew that I had been justified inmy anticipations. The electric waveswhich were being sent out into space fromPoldhu had traversed the Atlantic, unim-peded by the curvature of the earthwhich so many considered to be a fatalobstacle, and they were now audible inmy receiver in Newfoundland!

I then felt for the first time absolutelycertain that the day when I should beable to send messages without wires orcables across the Atlantic and acrossother oceans and, perhaps, continents,was not far distant. The then enormousdistance, for radio, of 1,700 miles hadbeen successfully bridged.

On the following day the signals wereagain heard, though not quite as distinctly.However, there was no further doubt pos-sible that the experiment had succeeded.

The result was much more than the meresuccessful realization of an experiment.It was a discovery which proved that,contrary to the general belief, radio sig-nals could travel over such great dis-tances as those separating Europe fromAmerica and it constituted. as Sir OliverLodge has stated, an epoch in history.

It must be remembered that at thattime there was no suggestion of the ex-istence of the Heaviside -Kennelly layer,nor of the reflection of electric wavesfrom the higher regions of the atmos-phere. The instruments we had at ourdisposal were very crude compared withthose we have today. We had no valvesor tubes, no amplifiers, no sensitive super-heterodyne sets. no directional transmit-ters and receivers. and no means of mak-ing continuous waves. All we had fortransmitting was the means of makingcrude damped waves by means of irregu-lar spark discharges. The receivers thatwere then employed were insensitive ascompared with those of the present day.

Following the success of the test I was

(Continued on page 6)

1975 advertisement

WHIPPANY VINTAGE RADIO DISPLAY

This club scheduled to dis-play antique radio receivers andcommunication material for the em-ployees of the Bell Labs at Whip-pany, New Jersey. Information ab-out the historical Whippany "barn"purchased in 1926 for radio com-munication experiments as well asthe display of receivers, circa1918-1935, was programed for theevent.

SOUTHWEST VINTAGE RADIOAND PHONOGRAPH SOCIETY

The collectors of the Dallasarea are becoming more active. At

the last meeting: there was sel-ling and trading of radios, phono-graphs, and associated items andthere was a discussion of the so-ciety sponsoring exhibits for pub-lic viewing.

Earl McDonald, Clarence Johnsonand Jim Crenshaw displayed theirvintage wireless and radio equip-ment for student education of thedevelopment of electronics at East -field College in Mesquite Texasduring the week of January 27 to 31.

For membership informationcall: Bob Sullivan at (214) 255-9033.

50 YEAR OLD FLAME PROOF KEY

TYPE J -7-AGov Ordl'r No 141082 Ddtcd. 1921

LEI *1292In 1966 the U.S. Navy closed the hughBrooklyn Navy Yard and the City of New Yorkpurchased the property. The J7A Keys werediscovered in a warehouse where they had beenstored for the past 50 years. Corrosion has beencorrected, however, there is some slight paintpeel. New boxes have been provided.

Both keys are of heavy duty construction witha large Navy type knob. The keying arm anddome are brass ... the contacts are Y. inch coinsilver. The J7A is 2V x 5V, inches and the J5Ais 2% x 3Z inches in size. The BULB, or Lampis NOT supplied with the J7A.

A RARE FIND! $1295ORDER TODAY! PPd

The .15A was made forthe Signal Corps in

1941, and is the sametype of Key except forthe Dome housing theneon bulb. A real mem-ento of WWII. Supply issomewhat limited . .

buy today!

__1' t é

Sounders

$2500

SALTS BHPOflIIIMP O BOX 19406 DALLAS. TEXAS 75219

EVENINGS 214-262-7855

SASE FORCOMPLETE

LIST

6 The HORN SPEAKER,....

MARCONI,promptly notified by the Anglo-AmericanTelegraph Company that, as they had theexclusive right to construct and operatestations for telegraphic communicationbetween Newfoundland and places outsidethat colony, the work upon which I wasengaged was a violation of their rights. Iwas asked to give an immediate prom-ise not to proceed with my experi-ments and to remove my apparatus orlegal proceedings would he taken. I wasabsolutely astounded by this communi-cation, which, however. at least gave methe satisfaction of knowing that one of thegreat cable companies not only believedin my success but feared the competitionof radio trans -Atlantic communication.

I mention this to show why my experi-ments in Newfoundland were thus cutshort. When. however, the reason becameknown. I received a very cordial invita-tion from the government of Canada toerect a station in Nova Scotia, an offerwhich I gladly accepted.

The announcement that I had succeededin transmitting radio signals across theAtlantic was received with scepticism by

most scientists, principally inEurope. The same thing cannot besaid of American electrical en-gineers, for the American Instituteof Electrical Engineers was thefirst technical and scientific bodywhich believed in me and my state-ment of having received signals a-cross the Atlantic Ocean. It wasthe first distinguished and author-itative society enthusiastically tocelebrate the event and to extendto me. its generous support and val-uable encouragement. It celebratedthe occasion by a dinner given to

1975 advertisement

9820 Silver Meadow Drive. Dallas, Texas 75217

me in New York, at which most dis-tinguished American scientists tookpart, including men whose names wereand still pre household words inelectrical science, such as Dr. Al-exander Graham Bell, the inventor ofthe telephone, Professor Elihu Thom-son, Dr. Steinmetz, Dr. Michael Pupin,Mr. Frank Sprague, and many others.In less than three months from thedate of the tests to Newfoundlandthese long-distance results weremore than confirmed by experimentscarried out by myself on the S.3.Philadelphia of the American Linen

Spanning great distances is nowchild's play compared with what itwas then. The 1 -beam projector andother commercial radio telegraphand telephone stations are now ex-changing daily hundreds of thousandsof words between distant parts ofthe earth. Wireless telephony overworld-wide distances is now a real-ity, together with transmission ofpictures, and the day is approachingwhen television will also be a com-monplace. It may even be that thetransmission of payer over moderatedistance may be developed in the

not far distant future. I mustleave to your imaginations theuses which can be made of these newpowers. They will probably be aswonderful as anything which we haveexperienced so faro

Nr. Kemp and fir. Paget are withme at the microphone today while I

C:3/1 Puns a7a<.T1a]La KerT nar,msa 1 Kerr alrnwana 1 KDETT LaCTRCnICs' P11irT LiCTRONICs [Parr LICTRUNICs I PUS" ltLCfl:Cir1f;6

am addressing you, and I wish to

send my most cordial greetings toall those interested in radio inAmerica ¡I feel sure they form themajority of the American people)and to all my friends at the otherside of the Atlantic.

READER WANTS AND NEEDS"Put in more articles about the

early battery sets," is a frequentrequest lately. Many readers saythat they want to see' more about

the small table radios between 1930and 1939.

THE HORN SPEAKER has the view-point that all radios, phonographs,telephones, phones, electric eq-uipment, telegraph items, etc. a-long with all the people who in-vented, improved and used theseitems make interesting readingmaterial. Simple or complex it isinteresting.

In passing let me mention thatwe never try to promote one col-lectible over another. Please letus know what you like.

SUBSCRIPTION RATES FOR

THE HORN SPEAKERRegular rate:

One 3 ear..........1L.[0N ¡

Two years..........,:, :-.LC

Spec:_al rates for one year(mailed in envelope)First class ..........3.00Air mail ...... 112.00

Foreign air mail 116 . CIO

PURTT IIiCTNOIiCN. Purr L6AC7nU1:IGs' P:D;1T LZ7HONICs PeiT n.Lf.TRaICs I

PUETT ELECTRONICSMAILIIG ADDRESS- ' LIST 1101688 10

3006 Abston Drive Mesquite, Teas 75149

NOV TO ORDER:

a)

(t) Please state whether new or weed tubes aredesired and whether a half-price used tubeis desired when a new tube Is out of stock.RE70IDS e.. wailed with pour invoice forout -of -stock tubes. or when, by customerrequest, a used tube is substituted for anout -of -stock new tube.

(3) All orders are shipped parcel poet - noC.O.D. INCLUDE 191 POE 706TA.Z AID8Á101I10. IISUIYCI RATS ARE 301 fororders under $50.00. TAILS EBSIDEITSADD 9% STATE SALES TAI.

MBWLJ ORDER $3.00

TABLE 1.1 OLD STYLI GLASS E1IIO7E moss

I

01210 $5. C1326 . 3x227 3-C327 3. 31551 3. 75302.332 3. s128D 2.C1345

$22

j7 la3. c3.

uff) =2. i5. 71 ----

mg

27

}4-02.240 5.

71A 5. 11$1011

PÁ224 $44 26

ACE 36

so 2.

3.5.

0/245 . IATIA/L

37OI2A0 2. i4.

'P.F.4 $4.666 $3. 112224 $4

EAD mow TUNG SOL

16245 $

$4.I.31 13.

3D227 3 WIZARD

E1D 245 3. $4. SILVERTCNE.

ma.----$3. 327 $3.

07221

01226 $1,.

all are used, thoroughly tested

CUE1IJGIfAM SYLVANIA MAJESTICl -27

ií

.5

CEOSLbT5- $3.

TABLE 2.1 SPECIALS

011 new is original cartons (new style) $6.00Cunningham C1350 used $5.00Radiotron UI-200 new in original cartons $7.00Westinghouse projection bulb (very old)

Type T20 0137 500 watt new $4.00Western Electric 052127 used $15.00

1E52 used

Type 56 (blueglass) used $5.00Arcturaa Type 27 (blue glass) new in original

carton $7.00

ALL TUBES ARE THOROUGHLY TESTED on a mutual conductance tubechecker before shipment. CUSTOt:R SATISFACTION GUARANTEED -- Ifyou are not satisfied with your order for any reason, tubes maybe returned within ten days for refund or replacement with ex-ception of tubes which are shorted or have open filaments. Itwill be assumed that returned tubes with open filaments or shortswere damaged in shipment. Shipping damage claims will be handledpromptly through the poet office on insured orders. Puett Elect-ronics assumes no liability for orders which are not insured, andno liability beyond that which ie covered by poetal insurance.

IN TABLE 3, THE SYMBOL n INDICATES THAT A TUBE IS AVAILABLENEW AND THE SYMBOL u INDICATES THAT THE TUBE IS AVAILABLE USED.

TABLE 3. OLDER i'SPS-NUMBER TUBES-prices listed for new tubesused tubes are half new price

01A3lµ1A51161A7

1151051061071D51D81151E7174104105106164105186

1I.16

1124

1LC61LD511.1311.73

1I.05116411.15

1851751Q5192A32µ2A5216

3C631743Q5564574

54511.

514

nunu

n

nuu

nu

uu

ma

nu

u

u

manu

nunu

nnu

nnununununu

numuu

DUmI

nnu

nonunununUnunu

3.3.3.

3.2.2.

3.

3.3.

3.

3.3.3.

3.2.

3.

3.

3.

3.

3.

3.

3.3.

3.

3.3.

5.

3.3.

3.

3.2.2.2.2.2.2.2.

513

5246A4615666

668

6856866376886C56066C76C8606

616

6756766776786066066356376386156166176186156166L7665686

675

617637638617618606

696

616624

nu 2.

nu 2.n 3.nu J..n 3.nu 3.

nu 3.nu J..

nu ,4.

nu 4.nu 4.nu 3.nu 2.

nu 3.n 3.nu 3.nu 3.n 3.n 3.u 3.

nu 3.nu 3.nu 5.nu 2.

nu 3.nu 2.nu 3.nu 3.u 3.nu 3.nu 3.nu 3.nu A3.nu. 13.nu 3.

nu3.

3.nu 3.nu 3.nu 3.nu 3.nu 3.nu 3.n 3.u 3.n 2.nu 3.nu 4.nu 2.nu 3.nu 2.nu 42.

6175 nu 3.7A1. nu 3.715 n 3.716 nu 3.

7A7 nu 3.7A8 nu 3.

7677 ma 3.7AG7 nu 3.707 u 3.704 no 3.735 nu 3.7H6 nu 3.

787 u 3.788 nu 3.7C5 nu 3.7C6 u 3.707 nu 3.716 u 3.717 nu 3.717 nu 3.778 nu 3.

707 u 3.767 u 3.7J7 n 3.717 u 3.7L7 nu 3.717 nu 3.7Q7 nu 3.767 n 3.737 nu 3.797 nu 3.716 n 3.717 u 3.

774 nu 3.

724 nu 3.1267 nu 3.1218 u 3.1237 u 3.12B8 u 3.1205 nu 3.1208 nu 3.1275 n 3.1235 nu 3.1237 nu 3.1217 nu 3.1218 nu 3.1207 nu 3.1223 u 3.1414 n 3.1417 u 3.1485 n 3.1436 nu 3.1488 n 3.

14C514C714771478148714371417144714071417151924A25A625A7258625C625162582525252626266626672728073031

32321632L7333435351435233637333941424344

46

48

50655006501651

n

nnnDU

nu

nuDU

nunuu 1

unuu 1

nunununnunuInu

wwu ;

nunu

n

nunuu

nuu ;

nununununununuu ;

nunun

nu

nunu

3.3.3.

3.

3.

3.

3.3.3.

3.

5.3.

3.

3.3.

3.3.2.

3.

2.

3.

3.3.

3.3.

3.2

55 n ' 3.

56 nu 3.

57 nu 3.58 u 3.

59 n 3.7(367 n 3.7017 nu 3.

75 nu .3t

76 nu 3.77 nu .3.

78 nu 3.79 nu 3.80 nu 2.81 u 5.82 u 3.83V n 3.84 nu 3.85 nu 3.89 n 3.117-L7 nu $4.

117-26 nu 3.9002 n 3.9003 n 3.VT52 u 4.SIB n 3.ISM u 3.ITS nu 3.

3.

3.3.3.2.2.

3.

3.

3.3.3.

3.3.3.4.4.5.5.4.2.2.

3.3.

ADDITION:

215 n

1Ó VT 325 n$4.

22 u 5.6H4 u9004 n 4.53 53 nu

6146 n 3.

1620 u 3.

44h.

IN TABLE 4, THE SYMBOL n INDICATES THAT A TUBE IS AVAILABLENEW AND THE SYMBOL u INDICATES THAT THE TUBE IS AVAILABLE USED.

TABLE 4. MORE RECENT TUBE TYPES - priceslisted for new tubes

used tube, are half new price

062 n063 u083 u003 nuOD3 nu014 n0Z4 nu1L4 n.a

1L6 n1RS nu134 n155 nu1T4 nu1T5 nu105 nu2C26 u212 n

3µ nu365 nu368 n

304 nu384 nu374 nu6634 nu6AB7 nu6AC5 nu6607 má6A15 nu6115 nu6ÁL7 a

6ÁQ5 nu

2.2.2.2.2.

3.3.4.5.2.1.2.2.

2.

3.3.

2.

2.

3.2.2.2.2.2.

2.

3.2.2.

2.2.

6AT6 nu6AÚ6 nu6Áv6 nu6BÁ6 nu68E6 nu6836 nu6C4 nu636 nu634 n6367 nu6837 nu6307 nu6307 nu6375 n6317 n6307 m+6507 nu6937 nu6917 nu6317 nu6307 nu6307 nu6317 nu6337 nu6307 n6317 n6116 nu614 nu615 nu675 u677 u

2.

2.2.2.2.

2.2.2.2.

.

3.2.

3.2.2.3.2.2.

2.2.

1.2.2.2.2.2.

2.2.1.2.2.

12Á5 nu12Á6 nu12ÁT6 nu12ÁT7 ul206 nu1207 nu12676 nu12816 nu123E6 nu12L6 nu12567 nu12307 o12315 n12577 n12507 nu12307 n12937 nu12517 a12317 nu12307 nu123Q7 nu12317 nu12V6 nu12W6 n .2.1214 nu.

19111 nu3565 nu3505 nu

3516 nu35W4 u3524 nu

3.3.2.2.2.2.2.2.2.

3.2.

.3.

2.2.3.M

3.

'3.

2.

3.2..

2.

3.

3.

2.

3..3.

2.2.2.2.

3525 nu3526 nu4025 u

45Z3 n

4525 nu5085 nu5005 nu5016 nu5026 nu5017 nu117-Z3 nu117-24 u

807 nu879 n884 n

930 n

950 u955 n958 uCl-1005 u11158 u1201 u1203 u

1232 u1273 u1612 u1625 u1626 u

2.

3.

3.3.

3.2.2.2.

3.3.

$3.

3.5.3.5.3.4.

4.

3.3.3.

3.

3.

3.3.4.3.

1629 u1633 u

1634 u1635 u2050 nu2051 nu5686 n5691 nCI( -

5703 u

5749 u

5751 nu5814 n5879 n5881 u5992 n6080 u6842 n6973 a7193 uVR90 nuVR-105 n

VR-150 nu

3.2.2.2.

3.3.2.2.

2.2.2.2.

2.4.2.

2.2.2.2.

$2.

$2.

ADDIIIDI:

104 nnn

3535 n

2.

2.

2 w

2.

TABLE 5 BALLAST TUBES - $3.00 each - all are new

JPD Type 1,3 & C; 136A; E498; EBOC; 192B 11498; L55B 28143H7; 4245; 7H11; 4061; 100-77; 100-79; 165R; 16504; 1584; 1í50R;6092A. AMPERITE 3177; VICTOREEN 1300-8

WE HAVE MANY MORE -RECENT -TYPE -NUMBER TUBES AND EARLY TV TUBESAT $2.00 new and $1.00 used. Send a self-addressed stampedenvelope with your requests.

SCHEMATIC DIAGRAM SERVICE -- We can furnish schematic diagrams &technical data on almost any radio from 1920 to 1954 from ourlibrary of original manufacturers service data. Send a self-addressed stamped envelope end $1.50 per radio set. This offeris limited to five photocopied pages. If your set exceeds firepages, we will send you a quote.

WANTED -- LITERATURE AND HISTORICAL DATA ONCLASSIC RADIO MANUFACTURERS IN THENINETEEN THIRTIES. E.H. SCOTT,McI'IURDO SILVER, LINCOLN, FISHERAND OTHERS. WRITE J.W.F. PUETT

Send a self-addressed stamped envelope for a free copy of ourClassic Radio Newsletter. We offer free technical advise for aself-addressed stamped envelope, or you may call S.W.F. Puettbetween the hours of 6.00 A: 110000 PM Centrpl Tine PLEASE.

.We are always glad to ¡kelp it we can. call a c b 9-8309

$

1

$

$

,Cali 1 men Wnaeawwsa 1 wart satmlas I purr natTeaSa 1 rerr 1IaCTAaICs 1 KQYrT nacmalcaTPWa"T slitTRascs I PIRTr nsCTRaIcs IreTT QJCTmOwICs' PUAT NucndlcaT Kett naCrlwaas' NWT IIIICIRONIcs CI:D

MART&sv GOT CHART

FOR CLASSIFIED ADS

W.. ow i.m lfr.o twee.ewags 1.w. 1..... 2.w.. 1.....1-16 __ 1.28 1.46 3.45 12.76

16-60 _. 1.70 2.60 4.15 18.11011-36 _ 1.66 3.40 4. SO 17.6016-40 _._ 216 1.60 5.50 26.3841-0 _._ 2.60 4.40 8.1E 22.6645-50 3. e.60 l50 26.4381-66 __ 3.06 8.10 7.58 2e.0066116 ...._ 1.10 6.60 4.15 20.5561-66 _ 1.50 8.30 8.66 83.0500-70 _ _ 3.50 8.78 6.68 38.001'1-78 4.18 7.16 10.30 36.2076 80 4.15 7. 76 11.00 40.7561-88 4.70 1.10 11.70 43.2366 00 6.00 3.70 12.35 45.6061-b 5.23 6.20 13.05 45.4066100 8.60 6.50 13.75 MN101-116 1 65 10.50 13.15 511.1111111-120 l 60 11.54 1160 41.40121-130 7.20 12.88 17.35 66.15111-140 7.78 13.50 10.28 71.161e1-160 8.28 - 14.45 20.66 74.30be per ward per

Photo adsJ..u. ever 150 word.

$2.00 extra.

MISC.

WILL REPAIR, restore, refinish, re-new or rebuild your old radio. Buy,sell or trade tubes, parts and radios.Bob Lucas, 9014 Mahoning, HoustonTX 77036.

WILL DUPLICATE exactly, the mutilat-ed panel for your antique radio.Send sketch or rubbing for quotat-ion, or will trade for antiqueradios of equal value. Norman A.Parsons, 22 Forest St., Bran-ford CT 06405.

PR PSSSIONAL Chi operators, re-tired or active, commercial,military, Gov't, police, etc.,invited to join Society ofwireleaa Pioneers, W70AQJ6Box 530, Santa Rosa CA 95.

FOR SALE OR TRADE

FOR SALE: Misc. Radio parts, all:5.00 per item or lot, postage paid.UX201'.s, UX112's, 71's, UX199's,UV199's, Arcturus Blue type GA,boxed blue Wunderlich's, 8 Rheostats,15 Grid Teaks, 30 assorted bindingpost, 2-UV199 Adaptors, 7 -UV 199shock mounted sockets, 25 piecesraw galena crystal, 3 Kilograd ver-niers, 2 Remler Honeycomb coils,Thordarson Audio Autoformer, P.can transformer -open, Redhead ear-phones. G. B. Schneider, 6848Commonwealth Blvd., Parma Hgts.,Ohio 44130.

1921-1931 Schematics and servicedata where available $2.00.Cecil Bounds, Pine Springs Rte.,Carlsbad, N. M. 88220.

FOR SALE: Rubber stamp with yourname and address plus AK Radioand speaker 1$3.00pp. James Fred,P. 0. 42, Roseville Ind., 46065.

FOR SALE OR TRADE

FOR SELT,: HRO 50, RME 6800, CrosleyShowbox, Musicaire 32, HallicraftersS-20, SX-28, Hoefer 1924, A -K 7,old car radios. Please make offer.NEED: Old test gear, E. H. Scottand other radios. Albert Pratt,WA9DYE, 1111 Lakeview, Milwaukee,./Wis. 53217.

TUBES FOR EARLY RADIOS and TV's.Send want list for lowest prices,trade in some types for others.Jim Farago, 247 W. Park St., So.St. Paul MN K5075.

RARE RCA VICTORS: Model 7-3Radio Record Player C1926 $275.00;Alhambra I $275; Early OrthophonicCredenza 1'350.00; Model 9-18 Mint;

Extremely Rare Model 9-25 Mint; Ex-tremely High quality Microphonesand many early Radio Books; Grand-father clock -radio, self windingclock and Elra Radio in Pooley Cab-inet cannot be told from actualGrandfather clock C1930; Rare "Mon-arch Special" Victor talking Machineheavily carved cabinet.

NEW OLD TUBES FOR SALE:

350 #10; 500 ##24A;

1000 ,1/27; 100 #47350 #71A; 100 x`35

50 ,#81; 50.. #76500 #80

3000 tubes - Price '1_000.00.Also many other hard to find tubes.Bruce Hertzberg, 343 Wagaraw Road,/Hawthorne, N. J. 07506. Phone 201423-3830.

WD11 Adaptors, use UX199, 120, VT24.No Wiring changes, Radiola III'sbattery hook up included t5.25pp.,2 for 49.25. Keith Parry, 17557Horace St., Granada Hills CA 91344.

FOR SALE: Group of early radios,speakers, earphones, etc., pleasesend long SASE for list. BillSprentall, 3312 East Lake Road,Canandaigua, New York 14424.

FOR SATE OR TRADE: Sixty near mintcopies of Radio World Illustratedcovering 1923, 1924 & 1925 for saleas a lot or trade. Don Patterson,1220 Meigs St., Augusta GA 30904.Phone: 404-738-7227.

TAPES OF OLD RADIO PROGRAMS: Reel -to -Reel -8 Track-Cassetes. Freelist. The Radio Tape Library,P. 0. Box 805, Bakersfield CA

93302.

HAVE AIRLINE 26 radio, WANT Com-patible speaker same era, not r-aces-

sarily Airline. Also CX 201 nbes.Bill Guertin, 10509 Oak Place,Fairfax VA 22030.

FOR SALE: Original Atwater Kentsales brochures. Excellent con-dition quantity limited, w2.50 ea.postpaid. Gary Probst, 336 WestChurch St., Lock Haven, Penn. 17745.

FOR SALE OR TRADE 7

WILL TRADE AK -10, Remler Superhetand possibly Radiola ILIA withWD -112 for AK -9 or 12, earlyFederal or Paragon. G. Hausske,1922 E. Indiana St., Wheaton,Ill. 60187.

WANTEDWANTED: Good cabinets for PhilcoModels 60 and 84. AR 43, 46, 47,or 53 power pack. WestinghouseFL field coil unit or substitute,for RCA FH horn speaker. FrankHeathcote, PSC 2, Box 2365, KAFB,N. M. 87117.

WANTED: Midwest eighteen tube chas-sis for parts. Fade "KG" AC chasis.Please write on any early AC Fada

chassis. Any information on Brunel-li Jones radios. Cecil Bounds, PineSprings Rte., Carlsbad, N. M. 88220.

WANTED: Telegraphone, MagnecorderSD -1, pre -1946 wire recorders;

books on recording and pre -1936television. Buy or trade. H. Layer,AV-SFSU, 1600 Holloway, San Fran-cisco CA 94132.

WANTED: Radio parts, sets, books,magazines, tubes, catalogues, in-struction booklets eta., pre -1930.Western Electric audio and tele-phone equipment, instruction book-lets etc., any vintage. BillNangle, 761 No. 29th. St., Mil-waukee, Wisc. 53208.

WAN1ED : 1922-28 commercially builtradios with unusual mechanicalcoupling devices for ganged tuning.Arthur Harrison, 1021 Falcon Drive,Columbia, Missouri 65201.

WANTED: RCA Horn Speaker, ModelUZ-1320 in good condition, "RadioNews" and "Popular Radio" for the1920's and 1930's with covers.J. Albert Warren, Box 279, Church

St., Waverly PA 18471.

WANTED: 21" Magnavox horn speaker.Would prefer to trade one of thefollowing: RCA IV, V, VTIB, VIII,

25, 28, RADA, or Zenith Super 7.W. Wiley, 282 Highland Ave., Wads-

worth, Ohio 44281.

WANTED: Scott All -Wave 12 cabinet,Knobs, escutcheons, speakers.Rauland Lyric R-500 Audio trans-

former. George Harris 3212- 36thStreet, Lubbock TX 79413.

WANTED: Old radio books, catalogs,Gernsback manuals, Early test eq-uipment. Give price in first let-ter. William Hemrick, Rt. 1, TerraAlta, West Virginia 26764.

WANTED: Old car radios, parts man-uals etc. Send description, modelnumber, price desired, trade?Mary Roth, 14500 LaBelle, Oak ParkMichigan 48237.

March '72

AK "bread-

board

February '72

Marconi 106.

April '72

Tube article

by Lee DeForest

August '72

Emile Berliner

invents the Gram-

ophone

June '72

Edison Phono-

graph, 1923

radio programs

The

Hor

n S

peak

er

BA

CK

ISS

UE

SO

RD

ER

NO

W!

THE HORN SPEAKER NEWSPAPER

All 10 back issues for 1973 $5.00

January '72

February 172

March '72

April '72

May '72

June '72

August '72

September '72

October '72

December '72

25

ea.

$1.00 ea.

$1.00 ea.

$1.50 ea.

50¢ ea.

500 ea.

50¢ ea.

75¢ ea.

750 ea.

25¢ ea.

All 20 back issues for 1972 and 1973,

while they last...$10.00.

Any issue from Jan.'73 to now..50¢ ea.

January '73

1887 Electric

Phonograph

Lee DeForest 1902

All

post

paid

September '72

Nikola Teals

Box

12

Kle

berg

, Tex

as 7

5145

Send

Nam

e

Add

ress

p E

nclo

sed

i.

PLE

ASE

PR

INT

j

cdr

Stat

eZ

ip

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February '73

Eagle Grapho-

phone

Echophone "4"

October '72

WRR since 1920

Amos 'N' Andy

March '73

Multiplex Phono-

graph, Armstrong

receiver

01[a tqp1g

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Gú g

lielm

Marconiu

a9

755,

',

1975