Radio Digest (Oct 1923-July 1924)

October 27, 1923 RADIO 1) I r, C ST — Illustrated Further Details of the Famous Miloplex Hook-Up Part V — How to Add Audio Frequency Amplification By the Mystery Man did when the Prodigal Ron ret; they killed the tatted calf. Remember where it says, "they fell on hie neck;" surely they didn't wear rut in those days. Keep your panel layout fi mpli down to the last inch of wl a real pood Radio set has inp along, just because it wa (Continued on page 14) Special for October Fada Complete markdown parts for the 5 tube Fada Neutrodyne Receiver ir eluding drilled engraved Bakt lite Panel and Base Hoard Absolutely guaranteed on our money back UsLs. Z 3 IUI>C $65 WHEN is a circuit not a circuit? Answer me that, somebody, and win the fur-lined bathtub, because, didn't six somebodies hardly wait until the ink was dry on last week's Digest before they were in with special delivery letters. Each wondering how in (mustn't say the naughty word, mustn't say the naughty word) I could call the rotor with a condenser shunting it a circuit, and especially so when it had no physical connection with the set? Asking that question and expecting an answer is just like asking a barber to "gimme a first class haircut," when you haven't got first class hair. 'Pears like as not I'll have to hogtie and double solder it to a ground lead to put it over. But, yes, sir — it's a circuit and you can hear it work — and that's "Raydeo." Some day, methinks, a merchandiser will spring into the limelight by placing a sign in his window reading "Radio Spoken Here." You know what I mean. But, let's' start something. Last week an amplifier was promised, a two-tube job I believe; personally I was going to wait a week in order that you might get better acquainted with your choice of the three circuits offered, but it seems many are clamoring for it, so let's go — very well. Now, read carefully, three circuits have been given you, out of the three you will pick your pet. Naturally, the bearcat of them all is the King III, yet its operation may have some of you perspiring, yes, and sweating too, as Ole says, therefore take your pick for the present, but try the King. Get him (or is it a her) perking for you like a voice amplifier and I think it will be your choice. There are few, if any tricks in amplifying, but there are some mighty dark alleys you better stay shy of. However, as my friend Carl Meyer says, "If you know your stuff" the rest is easy, or as Charlie Tuska says (pardon the familiarity, Charles), "It's r <\Cbffoiiran^^§Service^ ^ •TO ACCENT IS ON SERVICE, " | 14-16 Vesey St. NEW YORK Our appreciation of your orders is expressed in the Quality of our merchandise and prompt service. $3.50 3.00 3.50 2.75 $3.50 8.50 3.50 $2.00 2.35 2.75 $4.00 5.00 $1.00 .75 1.00 $6.00 12.00 5.00 VARIOCOUPLERS Workrite 180° Silk Wound Mills 180° Silk Wound Fisher, Large. 90° Fisher, 180= VARIOMETERS Workrite Remler. Molded Fisher, Large CONDENSERS R. C. 11 plate R. C 23 plate R. C. 43 plate VERNIER CONDENSERS R. C. 23 pi R. C. 43 pi SOCKETS Magnus, Aluminum Bakelite Bell Panel Mounting Socket PHONES Brandes Superior N. & K., Imported Nerco Ambassador .$2.95 . 1.95 . 2.25 . 1.75 .$2.95 . 4.45 . 2.65 .$1.05 . 1.35 . 1.65 .$2.25 . 2.95 .$0.45 . .45 . .75 ..$5.25 . 5.50 ,'. 2.50 .. 3.89 Complete Parts for Cockaday Sets including 7x14x3/16 panel. Standard fltl O *TCJ tested apparatus furnished throughout. .. ."P**1* * ** Mall orders promptly attended to. All orders amounting to $5.00 or more will be shipped prepaid Will ship C. O. D. unless remittance accompanies order. no trick to stop a howl (choke it) if you know how," and I say it's no trick amplifying either of the circuits if you know your stuff. I should know, I worked nine long months finding out; you surely can stick on the job nine minutes. "Brownie" has pictured a standard amplifying circuit intentionally leaving out the do-dads I will put in. Notice that our grid returns (sure, the tail end of the secondary) go to minus EASTERN COIL SETS for the COCKADAY CIRCUIT are now a standard, and in universal use, due to their efficiency in this wonder circuit. Made as per specifications of Mr. Cockaday, using No. 18 wire with D coil bank-wound. Complete Assembled Set of B, C and D Coils $2.75 Hook-up directions and material list furnished free with each set of coils. Mail Orders Filled. Dealers Communicate EASTERN RADIO MFG. CO. 22 Warren Street. Dept. R. D.. NEW YORK. N. Y. Do you Know why the Mu-Rad sells, Mr. Dealer? Simply because to hear the Mu-Rad is to buy it! One of Chicago's largest radio stores sells the Mu-Rad entirely by demonstration. Their records show that 8 out of 10 demonstrations result in a sale! That's profitable business! Write for Mu-Rad Franchise We are the exclusive distributor of the Mu-Rad Receiver in the states of Illinois, Indiana and southern Wisconsin. If your store is in any one of these three states, Mr. Dealer, write us today for details of our special exclusive territory proposition. Winter's here — there's need for haste! We also carry a complete stock of WESTERN ELECTRIC CO. GENERAL RADIO CO. parts. Write for details and discounts. Chicago Radio Apparatus Company Jobbers of Good Radio Merchandise General Offices: 407 South Dearborn CHICAGO filament, also peek closely and note that the rheostats are connected in the negative A battery lead to filament. Atta boy! Do it just right and don't slip like they You Must Use RHEOSTATS to get the best possible results from your set — no matter what type it is. They guarantee noticeable improvement in the reception obtained. 6 Ohms $1.00 20 Ohms 1.2S 30 Ohms 1.30 25c extra with dial Suitable for either table or panel mounting. Condensite base, high grade resistance unit, attractive knob. Adjustable shaft to any thickness of panel. At all good dealers — or direct on receipt of purchase -price. Also write for our complete literature. AMSCO PRODUCTS, INC. 416 Broome Street New York AMPERITE— Automatic Filament Control. Unmounted $ .70. »1 1 /\ Mounted $ 1 . 1 U Langbein and Kaufman Variometers $6.00 Langbein and Kaufman Variocouplers $6.00 We personally consider both these variometer* tod • couplers to be the best on the market. Our stock consists of a most complete line of all Btandtu-d radio apparatus. Just let us know whu you want an<J we will 6hlp It to you uumedlately at regular manufacturers' prices. All shipments made immediately on receipt of purchase price. RADIO & MECHANICAL TRADING CORP. 23 Warren Street NEW YORK CITY L> "We Repair Your "Vacuum Tubes WD-ll-12. UV-199, UV-201-A C-301-A $3.50 each UV-200, C-300 2.7S each UV-201, C-301 3.00 each DV-6, DV-6-A 3.50 cicS All Work Fully Guaranteed Quick Service — Repaired Tubes shipped C. O. D. unless accompanied by remittance plus postage. * NEW TUBES A-399 (Type UV-199) C m | f\ A-401-A (Type UV-201 -A) *p^li_»M_ A-12 (Type WD-12) * EACH All the above Tubes guaranteed amplifiers and detectors. Shipped C. O. D., postage prepaid. ABALENE RADIO. 14 Vesey St., New York. N. Y. Jfctura/Re-PRODUeiJW Atlas Loud Speaker re-PRODUCTIOXS are absojutely true To the original The patented "double diaphrW £»£«*' in perfect harmony to every change of vibration «****"*• Adjustable to your set and particular rece.v.ng conditions as accurately as though built expressly for you. Ask the nearest Atlas dealer to demonstrate the ATLAS Loud Speaker for you. WRITE FOR BOOKLET "R" What have you accomplished with your Atlas Amplitone ? Tell about it! MARK MttftWe Eteettk Products Co. Inc. OftANGE" ST., f?AOIQ D.VfSlQN NEWARK, N. J.