THE DAI LY BRITISH WHIG. WEDNESDAY, JULY 26, 1022. i ------------------ INSTRUCTOR NEW YORK. Y. M.C.A PADIO SCHOOL vn T The éircuit diagram shows the secondary circuit of a receiver connected to a vacuum tube de- tector and, In addition, a vacuum tube oscillation generating eir- cuit coupled to the closed oscil- latory, or secondary, circuit of the receiver. The frequency of the oscillations {s controlled by the variable condenser shown _ THOMAS COPLEY Telephone 987. EEVISH Wanting anything done in the RESTLESS ies. Rane anit | CHILDREN Era Tit BESS, 2% urrenng, eno -- mr-- | MEDICINE, gi SPECIAL SALE | oy Double oe LT Diamond Tires connected across the grid and 30x3} : { 2 $12.00 plate coils of the oscillator. Oscillations will of course be in- THB duced in the secondary circuit by © CORD TIRES || BELMONT 4 oniintr wag "vi ba 30x34 ......$16.00 Re iy puede, olber {Ing between the oscillator and TUBES $1 75 the secondary circuit will also . 2000. . | of course affect the strength of . DINING AND TEA ROOM the Induced oscillations. a ' Lar er sizes in Imagine that a signal is picked g Why not dine here where up when the antenna circuit is proportion. Quality and" Service Is in resonance with a distant sending station at a_wave length Supreme? of 3,000 meters and suppose that _ Ww H Co b &C | the oscillator 18 not being ck operated. If the sending station o Ale um 0. Home Style Cooking Is transmitting with undamped 8 heard in the head telephones treets | Dinher 6 to 8 p.m. because the plate current varfa- tlons are smoothed out and are A. Tierney, Pi . of too high \frequency at any . Ys Prop rate to produce an audible sound. This would happen even a though the secondary were accu- 2 -- rately tuned to resonance with BUY YOUR RADIO NOW! is Phone 216. Cor. Princess and Wellington { Lunch 12 to 2 p.m. or continuous waves fo signal is S PRODUCTION OF BEATS WITH SEPARATE HETERODYNE the incoming oscillations whose frequency in the case of a 3,000 meter wave would be 100.000 cycles. The undamped oscilla- tions would not produce audible sound in fhe head telephones whatever their frequency might be. } : But now let us tune the os- cillator circuit and start the generation of continuous oscli- lations at a frequency of say 99,000 cycles. The tuned sec- ondary circuit connected to the grid and filament is not in resonance with the oscillator, but the latter will nevertheless induce oscillations of 99,000 cycle frequency in it. They will be forced oscillations. There are then oscillations of two fre- quencies--100,000 and 99,000 cycles--which add together to produce a third frequency of 1,000 cycles, the diffe. ice be- tween the other two. The os- cillations acting upon the grid and therefore the plate current variations have a frequency of 1,000 cycles, which is called a beat frequency. This frequency is within the audible limits and when rectified or apparently rectified bythe tube results in audible sound in the head tele< phone. The telephone dia- phragms vibrate at a rate of 1,000 times per second and the sound heard has a musical tone. If the oscillator frequency were matle 100,000 cycles no beats would be produced anc no sound would be A heard in the telephones. The heat frequency would be zero. But {if the oscillator frequency were increased to 101,000 cycles the beat frequency would again be 1,000 cycles and produce the same audible sound as before. The beat frequency.is always the numerical difference between that of the received oscillations and those locally generated in the osciHator. If the beat fre- quency is varied within audible I limits by varying the oscillator frequency. slightly, the tone of the signals may be varied. bo _ Hear the baseball sco res, stock reports, com- ' certs, shows, church ser vices and other radio telephone wonders in your own home. AN It is easy to build your own f and much _cheaper. Come in and get complete Information Ve Bi natu eo brte SR By RALPH BROWN, RADIO ENGINEER ready-to-use receiving set at minimum cost {in your home. . 4 3 " A TELEPHONIC LOUD SPEAKER Open evenings. Drop in and hear a Radio Concert FREE. A careful study of acoustics ovo leball scores by Radio : has resulted in the production of Stock reports twice-a-day by Radio. Out-of-city people! Write us your needs. We originate--others follow. Canada Radio Stores RIGHT GOODS A T RIGHT PRICES & 30034 Princess Street Phone 1207J. Radio 3AAY, ngaton's First and Only Exclusive Radio Supply House There is one very good ""Life Sentence'. It's The , . London Life Insurance Company "Policies Good as Gold" Lg Heap OFFICES . . LONDON, CANADA : this loud speaker. Material con- Agencies in all principal cities sists of spun fiber brass, Tele- & P phones are inserted on sound District Representatives: with the editor by mail? chambers and clamped there by an ingenious device allowing no escape of sound vibrations, Tone arm runs at right angle and fits into horn. Latter consists of overlapping sections, each one an accoustic chamber, the diam- eter increasing until th. bell ie reached. Latter is so designed that overtones are done away with. The main acoustic fea- tures are a perfected sound chamber with a graduated series of ten others, each Increasing the resonance of tone. In addi- tion there are two sound pro- Jectors on the bell, one aug- menting the one behind. They are made according to sound curves and this type is patented. The instrument is finished either in nickel or brass. The base is also of the same material and is large enough to furnish a firm stand. The results claimed for this Instrument by the mauu- facturer are surprising. Not only does the tiny sound dis- appear but all tones are given their natural resonance. The price is very reasonable and compares very favorably with other loud speakers. Telanhonas are not included, Will readers interested In these radio articles kindly communicate Fred M. Clow. ~ W. Walters. ' ah It is the height of cruelty to send King and Brock Streets . SE - 2 children to school on a eircus day. mn 'A Two Weeks Afloat on 'a Wonderful Boat-- %.. Who wouldn't be a sailor in July! Two weeks of such invigora- tion as this trip provides is worth a King's ransom--soothes Jaded nerves----rests tired brains. : A Two Week Cruise to Newfoundland From Montreal, down ihe St. Lawrence River, out through the Gulf to the At lantic, Passing the picturesque Gaspe Coast, then to Prince Edward Island, where we stop at - to St. John's where the ship docks for two days, allow- ing you to visit points of interest in the neighborhood. pea] "8. 8. Manoa" (6,000 tons) leaves Montreal Saturday, August 5th and every second Saturday thereafter. ' 6-Day Cruise to the Saguenay Every Saturday Steamer de luxe "Cape Eternity" leaves Montreal at 7 p.m. for an extended cruise Lo Quebec, Lower St. Lawrence River resorts, Tadousac and the Sag- uenay River, arriving back at Montreal the following Friday. Make all reservations early. For particulars, rates, ete., apply: Canada Steamship Lines Limited KINGSTON - EEEEREEEEEREEEEEEEE ~ AT CHAFFEY'S LOCKS. The Farmers Report a Good Yield of Hay in This District. Chaftey"s Locks, July 25.--The farmers are engaged harvesting 'their hay, and 'report a good yield, tha past week being ideal weather for the work. "Dr. T. F. Chamberlain's ideal cottage is nearing completion. Mr. and Mrs. Harry Fleming, St. Louis, Mo., and Mr. and Mrs. M. H. Kieran, Mrs. J. E. O'Brien and Miss Frances, of Montreal are guests of W. H. Fleming. A. W. Thompson and Party of New York, on the yacht Summertime, are spendiny the Summer here. A. Jones and family Smith's Falls, are occupyinv their house boat here. D. F. Anderson, Youngstown, is spending a few weeks in his beautiful cottage here, He was fortunate in catching a six- pound bass last Saturday while W, G. Smith, of Youngstown, caught a six and a half pound bass, the day previous. Some of the late gyests at the Opinicon Club are: Mr. and Mrs. R. Buchanan, J. A. Trawick and nephew, W. G. Smith; Dr. and Mrs. Sherbondy, D. A. Trawick, Youngs- town, Ohio; Mr. and Mrs. C. Semple, J. A. Richards and sister, Chicago, Ill. W. Semplé, Judge Kennedy, Youngstown, Dr. Conboy and party, Rochester, New York. A 'very emjoyable evening s spent on Friday last, when Mr. W H. Fleming entertained a number of the young people. Dancing and cards were enjoyed, also a number of sel- ections from Chaffey's Locks or- chestra. W. H. Buffman, Detroit, is the guest of George L. Simmons. Mr. and Mrs. J. Rowswell and fam- ily, Winnipeg, are visiting Mrs. Wellington Kerr, Sr. W. F. Noonan, Napanee, spent the week-end here. sisi. W. N. Stevenson, Organist. and Choirmaster of Almonte Presbyter- fan Church, was the recipient of a [#] {handsome wrist watch, presented by the members of his choir. PF VULCANITE SLATE SURFACED ROOFING Four-in-One Slab Shingle ... . ..$7.50 per sq. Hexagonal Slab Shingle .......$8.00 per sq. Rolls, 32 wide . .... ...... | . $3.90 per sq. The highest type of "Beaver Quality Roofing and surfaced with natural colored Crushed Slate, Red or Green. SERVICE AT THE RIGHT PRICE {|-LET US REPAIR YOUR CLOCK WHILE AT CAMP L. C. HEMSLEY Watchmaker trom R. J. Rodger 149 Sydenham St. Just off Princess DAINTY CAFE The place where EXCELSIOR LIFE, ROYAL EX. CHANGE, FIRE, SICKNESS AND ACCIDENT, BURGLARY. RC rrserrsaremeriarant OGILVIE'S Insurance and Brokerage Office ---------------------------------------------- AGENT FOR G. HUNTER OGILVIE 151 Wellington Street dining out is truly a delight PRINCESS ST. OPPOSITE BIBBY'S a ae ami a THE A. B. C. W Let us loan you one free for next washday. "THE ELECTRIC SHOP" F. GRACE Phone 1543 118 Brock Street We have received a car of Ebony Cube Cannell Coal of the § annell finest grade and quality. Let us have your order for your season's requirements, which shall y oa have our prompt attention. Cut Soft Kindling for summer burning always in stock. SOWARDS COAL CO PHONE 135. UPTOWN OFFICE: McGALL'S CIGAR STORE. PHONE 811. Wasapika Gold Mine' is being rap!dly developed. Of- ficial word of results on 100 ft. level show remarkable attain- ments. Ee Drifting north and south of the shaft on this level, 30 feet one way and 40 feet the other, gave an average ore value of better than $20 a ton across full width of shaft. Recent faces have rum as high as $40. A cromscut, on the 100 ft. level cut the full width of the ore 3 fect and gave an average of $15 a ton. A month ago the stock was be- low 10 cents a share. Send in your order at once be- fore It 1s too late. tray PHONE 821. We execute orders on all the markets A. McKINNON & CO Stocks : Bonds Cor. Brock & King Sts. ~~ WHEN" YOU BUY BATTERIES INSIST ON HX JL SIT AGENCY FOR ALL LINES MONARCH OCEAN STEAMSHIP MADE IN KINGSTON ASK TO HAVE A "MONARCH" INSTALLED IN YOUR NEW CAR. o BOOST HOME INDUSTRIES, J Ki Special attention given your family friends going to or returning from the Old Country, ~ For information and rates apply to P. HANLRY, G.Fand T.AGT. Ry, ngston, Ont Open day and night. PHONE 99. We Have a Lunch That You Will Like A 'special club dish, changed daily, a cup of our de- liclous Tea or Coffee and a tasty dessert, is sufficient lunch for anyone. THE VICTORIA CAFE JEWLY LEE, Manager. : 384 KING STREPT 'TELEPHONE 762. Many Folks Are Underfed You've seen them--Tolks who look as if they never had enough | Au Au HTT LTR HT TTC Au Au Au Au Au, to eat. A They have what the doctors call "malnutrition." They are An underfed. They eat the wrong foods. Their appetites need coaxing. | Au "Lots of good milk' 'is-the remedy. Milk is easily digested. It is the perfect food. It contains everything the body needs and sup- FROM MONTREAL AND QUEBEC July 28--Montealm Liverpool July 29--Metagamg . Glasgow Aug. 2--~Minnedosa Southampton, Antwerp. §. 3--Empress of India * -- Chep- bourg, Southampton. £ $--Empress of France ® --Cher- ours, Southampton, Hamburg 8. 11--Montrose 8. 12-----Tunlslan Glasgow 5 15--Empress of Britain *, Liver pool. Aug. 16--Melita--Southampton, Ant werp. &. 18---Victorjan iverpool £ 33--Empress of Scotland *--Cher- hourg, Southampton, Hamburg. €. 35--Montoalm ........ . g. 26--Metagama 8. 30---Minnedosa Antwerp. Sept. 1--*Empréss of India, Cherbourg, Southampton. plies it in the right proportion. Sept. 1---Montclare Folks with appetites jaded with too much rich, highly spiced food should try Price's Pasteurized Milk. PRICE'S DAIRY tr Sept. 13--Empress of Britain *L{ pool. Bept. 13--Melita ..Southampton, Ant- 4 Bept. 5--*Empress of France, bourg, Southampton, Hamburg. Sept. an ........Southampton, Antwerp, or- le we! Bept. 16--Victorian .....ve.. JLdverpool * From Quebec only. OCCT LC LLL - t's WITTE | 2 Coes voce, or a, acre farm owned by John McRae one mile from Ashton Station te bs ad J. M. Quinn, Perth, sold the Jon Green, Lansdowne, Ont/ The B, Beaumont, Gen. Agt., Pass. Depd 1 King St. EK. Torente Adelaide 2100 Canadian Pacific Raflway Traffie Agents crop, live-stock and farm implemants | Many a man commands respect-hy go with the farm. : simply looking wise. : em Many Shoe Bargains on $ Day "$ DAY © S$ VALUE Ladies' White Canvas Lace Boots with Rubber Soles andlieels ove... S100 Girls' White Canvas Lace Boots (11 to 2), Leath- CPBOIES, ........c. iii oi. i Misses' White Canvas Lace Boots (8x]1 0h), .....$1.00 Leath- erSoles. ....... >. ......; crane aids $1.00 Ladies' White Canvas Pump s, mostly small sizes . . $1.00 The Sawyer Shoe Store Phone 159 , 184 Princess St.