Radio mirror (Jan-Oct 1923)

RADIO DIGEST June 16, 1923 LEVIATHAN'S OUTFIT KING J)FTHEM ALL TWO MOTOR-DRIVEN LIFEBOATS TO BE EQUIPPED Huge Shipping Board Vessel's Installation Will Connect Boat with Two Continents By F. N. EoUingrsworth BOSTON, MASS. — Surpassing even that of the Majestic, which has hitherto been credited with having the most powerful and up-to-date Radio equipment of any ship in the world, the United States Shipping Board's steamship Leviathan, now being refitted and equipped in Boston in the largest drydock in the world, will have everything in Radio that is necessary to make her equipment the greatest on earth. It will be eclipsed in importance only by her powerful machinery and delicate controls. The contract to equip the Leviathan, whose call letters are Tv*SN, with a super-power marine Radio installation has been let and completion of the work will give America the distinction of Radio supremacy on the high seas. Can Talk with Two Continents She will have a six kilowatt tube code transmitter. This is six times as powerful as that carried by the average great Atlantic liner, and assures uninterrupted communication with points 3,000 miles distant, or with Europe and America en voyage. In addition to the telegraph service, she will have a two kilowatt Radiotelephone installation, which will provide voice contact with other vessels and stations on both shores of the Atlantic as well. With the increasing number of ships having Radiophone installations, it is likely that land stations will soon be erected to handle voice messages from ships at sea to points inland over the regular land wire systems. The Leviathan will have a special emergency 600-meter spark transmitter in addition to the regular installations. Several sensitive vacuum tube receivers will be installed for reception, including Radio frequency amplifiers and interference eliminating devices. Radio on Motor-Driven Lifeboats The two big motor-driven lifeboats, the finest that marine engineering can devise, and primarily designed for towing other lifeboats in long strings, will be completely Radio equipped. Each motor lifeboat will carry a crew of eleven in charge of a second officer, and two Radio operators. One of these boats will be located on each side of the ship on the boat deck. Each is 3? feet long, unsinkable, and is propelled by a 100-horsepower standard marine engine, and by means of the main shaft drives a 4-blade towing pitch propeller. Each boat is equipped with a one quarter kilowatt transmitting outfit and is capable of tending and receiving messages a distance of at least 250 miles. The operators wUl be specially trained men, whose duty will be to see, with frequent tests, that the outfit is always in working order. SPECIAL OFFER LIST (Continued from page 2) Dubilier Ducon; Dubilier Mieadon Type 600 (.006 mfd.); Dubilier Mieadon Type 610 (.01 or .02 mfd.); Dubilier By-Pass Condenser (1 mfd.). Premier Universal Radio Jack. Filament Control Five Spring; CBL Variable Grid Leak, without condenser. Class D Articles For eight consecutive coupons and one dollar and twenty cents ($1.20) any one of the following articles will be sent; 1 Carter 20-Ohm Vernier CoDtrol Kheostat; 1 Schindler Radio Frequency Transformer; 1 MartinCopeland 13-Point Inductance Switch: 1 Martin-Copeland 15-Point Inductance Switch; 1 Martin-Copeland 19Point Inductance Switcth; Walnart Variable Condenser (5-Plate .0001 mfd.); Ray-O-Vac No. 4151 B Battery. 22% volts; Ray-O-Vac Dry Battery, 3 cells 4% volts; Electrad Variohm, with mica condenser: Dubilier ByPass Condenser (2 mfd.); CRL Variable Grid Leak with Condenser. Class E Articles For ten consecutively numbered coupons and one dollar and fifty cents ($1.50) any one of the following articles will be sent: 1 Carter 6-Ohm Automatic Control Rheostat; 1 Carter 20 Ohm Automatic Control Rheostat; 1 Decima 3-Plate Variable Condenser; Walnart Variable Condenser (13-Plate .00025 mfd.); Ray-O-Vac Drv Battery. 4 cells 1% volts; Dubilier Variodon (.0004 or .0006 mfd.). Class P Articles For twelve consecutively numbered coupons and one dollar and eighty cents $(1.80) the following will be sent; 1 Acme Pot-Rheo (potentiometer and rheostat) ; Walnart Variable Condenser (23-Plate .0005 mfd.); Bay-O-Vac No. 2151 B Battery, 22% volts: Dubilier By-Pass Condenser (3 mfd.); Premier Variable Condenser without dial (.00039 mfd.). Class G Articles For fourteen consecutively numbered coupons and two dollars and forty cents ($2.40) any one of the following articles will be sent: 1 Federal 7-Plate Variable Condenser; 1 Federal 11-Plate Variable Condenser: 1 Federal 21 -Plate Variable Condenser; 1 Federal Anticapacity Switch; 1 Decima Variable Condenser 11-Plate Walnart Variable Condenser (43-Plate .001 mfd.); Dubilier Variadon (.001 mfd.) ; Dubilier By-Pass Condenser (4 mfd.) ; Premier Variable Condenser with dial (.00073 mfd.). Class H Articles For sixteen consecutively numbered coupons and three dollars ($3.00) any one of the following articles will be sent : 1 Federal Audio Frequency Transformer No. 228 W; 1 Decima 23-Plate Variable Condenser; 1 Acme Audio Frequency Transformer; 1 Acme Radio Frequency Transformer (R-2, R-3, or R-4) ; Walnart Variable Condenser (13-Plate vernier; Walnart Variable Condenser (23-Plate vernier) ; Kay-O-Vac No. 2301 ••B" Battery 45 volts; Bay-O-Vac Dry Battery, 6 cells 1% volts; Dubilier Duratran (R. F. transformer); Premier Micrometer Variocoupler with dial; Premier Variable Condenser with dial (.0015 mfd); Premier Variable Condenser with vernier (.0004 mfd.). Largest Radio Store in America Radio Bargains Buying Direct — in Quantities — for Cash, and Operating on a "Small Profit— Big Sale— Quick Turn" Basis Makes Possible These Values Radio Supplies Purchased Here Are Sold Under a Positive Guarantee of Satisfaction. We Carry the Largest New Stock of First Quality New Merchandise. Largest Radio Store in America BUILD YOUR OWN SET! All Panels Drilled — Results Guaranteed If You Use Our Instructions COMPLETE PARTS FOR KNOCKED-DOWN RECEIVING SET $17.95 Beg. CONSISTING OF Price 2 Variometers $10.00 1 Variocoupler 5.00 3 Bakelite Dials 3.00 Remler Bakelite Socket.. 1.00 Howard Rheostat 1 . 1 0 Cunningham C-300 Detector Tube 5.O0 Mahogany Cabinet 4.50 Genuine Formica Panel. . 2.25 8 Binding Posts 80 Switch Lever 50 12 Switch Points 40 Freshman Grid Leak and Condenser Combined... 1.00 Complete Drawing for Assembly and Wiring.. 1.00 Our Price $3.90 1.75 .75 .45 4.45 2.75 1.75 .40 .25 .20 COMPLETE PARTS FOR REINARTZ SETS $11.45 Reg. Our CONSISTING OF Price Price 7x18 Formica Panel $ 1 .89 $ 1 .70 Remler Bakelite Socket... 1.00 .45 Howard Vernier Rheostat.. 1.50 1.35 23 Plate Variable Condenser 3.30 1.45 11 Plate Cuni Variable 3.10 1.35 3 Switch Levers 1.50 .75 2 Dozen Switch Points 80 .40 1 Schoonhoven Reinartz Coil 3.00 1.95 Freshman Variable Grid Leak and Condenser Combined 1.00 .65 8 Binding Posts 80 .40 25 Feet Tinned Wire 30 .20 Baseboard for Mounting. . .50 .25 Blueprint with Complete Instructions for Assembly and Wiring 1 .00 .50 Regular Price $21.69 til 4C Our Price ♦•••t* COMPLETE PARTS FOR 2-STEP AMPLIFIER $12.45 Can be used to amplify Reinartz. Flewelling. Short Wave Receiver, Crystal, Ultra Auction or any Receiving Set so that Loud Speaker or Phonograph can be used in place of head set. Beg. Our CONSISTING OF Price Price 7x10 Formica Panel or Other Suitable Size $1.05 $0.80 High Ratio All-American or Thordarson Trans . former 4.75 3.95 Low Ratio Thordarson or All American Transformer 4.50 2.95 2 Howard Rheostats 2.20 .... 2 Remler Bakelite Sockets 2.00 90 3 Double Pacent Jacks 8.00 1.50 13 Binding Posts |.30 .65 Baseboard for Mounting.. .30 .15 Regular Price . ." $20. 10 Wiring Diagram, with Complete Instructions for Drilling and Assembling Panel tin MC Our Price COMPLETE PARTS FOR FLEWELLING CIRCUIT $12.45 CONSISTING OF Price Price 6x14 Formica Panel $1.26 $1 10 23 Plate Variable Con denser 3 30 1 45 Three .006 Mica Condensers 3.00 2~25 CRL i Variable Grid Leak. . 1.85 I "35 Remler Grid Leak 40 95 2 Coil Adjustable Honeycomb Coil Mounting with Knobs 4.00 2 65 75 Turn Honeycomb Coil . . '.80 40 2 Remler Coil Mounts with Straps 1 20 80 1 Remler Bakelite Socket. 1.00 .'45 Howard Vernier Rheostat.. 1.50 I ¥*e}j** 3" Dial 1.00 !25 » Binding Posts 80 40 1 Baseboard for Mounting.. .30 20 1 Blueprint with Complete Instructions for Assembly and Wiring |.00 .50 Regular Price _. . . $22,16 $1 4 At. Our Price COMPLETE PARTS FOR SINGLE Reg. Our CONSISTING OF Price Price 43-Plate Vernier Variable Condenser $7.00 $3.95 Radion Loop Aerial 8.50 Cunningham C301-A Tube 9.00 Grewol Glass Inclosed Detector 2.00 Radio Frequency Transformer 4.50 All American 5 to 1 Radio Audio Frequency Transformer 4.75 2— .001 Micon Condensers .70 1 — .002 Micon Condenser. .45 5.95 S05 3.95 .50 .35 TUBE REFLEX CIRCUIT $32.65 Reg. Our CONSISTING OF Price Price Howard Potentiometer $ 1 .50 $ 1 .35 Howard 25 Ohm Rheostat. 1. 10 1.00 8 Binding Posts 80 .40 9x10% Formica Panel.-... 1.42 1.20 9xl0M; Genuine Solid Mahogany Cabinet with hinged top 5.00 2.95 Complete instructions for drilling, assembling and wiring furnished so that any one with no technical knowledge can easily follow. Regular price, $45.22. t"?9 fi«i Our Price <P"lDO COMPLETE PARTS FOR ULT (Known as the Wonder Circuit) Reg. Our CONSISTING OF Price Price 9x10% Formica Panel $1.42 $1.20 23-Plate Condenser 3.30 Bakelite Socket (Remler). I.OO Special Ultra Audion Coil, plain or hank wound with tape 3.00 1 Howard Vernier Rheostat 1.50 CRL Grid Leak 1.50 .0005 Micon Condenser 35 2 Switch Levers 70 1.95 1.35 .95 .25 .50 RA AUDION CIRCUIT $11.90 Reg. Our Price Price .50 .30 CONSISTING OF IS Switch Points... 2 Switch Stops 8 Binding Posts 80 Genuine Solid Mahogany Cabinet, size 9x10%, with hinged top 5.00 25-ft. Hookup Wire 20 Regular Price $19.37 »ii q/% Our Price ip.ll.yU 2.95 .10 Original Baldwin Phones These are the Genuine Nathaniel Bald-win "Mica Diaphragm" Phones, complete with silk cord and headband. d»Q QC Special iptf.WJ 'Mica "C" Genuine Baldwin Diaphragm" Type Loud Speaking Units. Special $4.65 $10 Value Long Range Headset $3.65 Made in style and design proved by use and experiment to be the best. Coil wound with about 6,500 turns of No. 40 enamel coated copper wire. Direct current resistance approximately 1,600 ohms. Impedence at average music and voice frequency (800 cycles) is <fcO CC 21,000 ohms «pO.OO MASTER BALDWIN PHONES Type C w'rth head band and cord... $6.95 Type C unit 3.95 Brandes superior headset 5.75 3000 Ohm Guaranteed Headsets $8.50 value 3.65 FORMICA PANELS Cut to Any Size %" Thick SQ. IN. V/2c We Engrave Panels at 3c a Letter We Drill Panels at 5c a Hole All drilling or engraving orders must be accompanied by drawing or template. Thordarson Amplifying TRANSFORMERS [High and (A IF Low Ratio $£.40 HONEYCOMB COILS 1.500 Turns, Coto-Coil $1-50 1,200 Turns. Coto-Coil 1.50 1.000 Turns 1.25 750 Turns 1-00 250 Turns. Coto-Coil 75 150 Turns 60 100 Turns 50 75 Turns 40 50 Turns 40 35 and 25 Turns 40 Rubber Spaghetti Tubing, yard 10 Antenella — Use Electric Light Socket for aerial 1.15 22^-Volt B Batteries (stock replenished every day) 1.65 Dials — 2, 3 and 3% inch 25 Ultra-Audion Bank Wound Coils... 1.95 Grewol Detectors 1.45 ELECTRIC SOLDERING IRON $2.45 Especially adapted to radio work. Simply attach to any light socket 110-120 volts. Complete, with six foot cord and attaching plug. Lasts a lifetime for ordinary home or light shop work. A real bargain. VARIABLE CONDENSERS $7.00 value, 43 Plate Vernier $3.95 $6.50 value. 23 Plate1 Vernier 3.45 $6.00 value. 11 Plate Vernier 2.95 SI. 75 value, 3 Plate Vernier 1.15 $4.30 value. 43 Plate NOW 1.75 $3.70 value. 23 Plate NOW 1.45 $3.30 value. 11 Plate NOW 1.35 $2.25 value. 5 Plate NOW 1.25 Signal Corps SuperSensitive Microphone Transmitters $2.45 BRACH'S LIGHTNING ARRESTER Approved by underwriters; fully protects your home from danger of injury by lightning. Signal Corps Super-Sensitive Microphone Transmitters $2.45 Thordarson Amplifying Transformers, High and Low Ratio, $4.50 Value, now 2.45 Our Price 95c Outdoor Type $1.45 Western Electric No. 10A Loud $161.00 so"*r $98.45 Complete with loud speaker horn, 3 stage power amplifier and 3 216A Western Electric amplifier tubes. FRESHMAN LEAK AND CONDENSER VARIABLE GRID $1.00 Value 65c JACKS AND PLUGS Pacent single circuit $0.35 Pacent double circuit 50 Federal Single circuit, filament control 35 Federal double circuit, filament control 50 Pacent plugs 45 Jacks are polished nickel, nickel-silver springs, pure silver contacts. Nickel washers for mounting on any panel % to % inch thick. Spread terminals make soldering easy. VARIOCOUPLERS 180 Degree Coupling $1.75 90 Degree Coupling $1.95 Moulded Couplers, 180 Degrees at $3.45 VARIOMETERS Diamond Lattice at ; $2.95 Moulded 3.65 $5 Value Mahogany Variometer 1.95 RADIO BOOKS 101 Receiving Circuits, by M. B. Sleeper 50c 6 Successful Radio Sets, by M. B. Sleeper. .S0c 100 Radio Hook-Ups 25c Loud Talkers, How to Build Them 25c How to Tune Your Radio Set 25c We Guarantee All Merchandise Purchased of Us Mail Orders Receive Immediate Attention CHICAGO SALVAGE STOCK STORE 509 South State Street, Chicago, III. Dept. RD6