Radio mirror (Jan-Oct 1923)

RADIO DIGEST ILLUSTRATED 15 Questions and Answers Selected for the Reinartz Circuit Fan Same Circuit US74) OLP. Osceola. la. Will you please send me a wiring diagram of a receiver using a Reinartz spider tvcb coil and the WD-11 dry cell tube? Would this circuit be as efficient as the one described in the December 23 issue of the Digest? Please give markings of batteries and value of grid leak resistance. A. See page thirteen of the November 25 issue of Radio Digest for diagTam of circuit asked. We believe that this will prove quite as efficient as the one appearing in December 23rd issue. Much depends upon skillful construction in any case and comparative virtues are difficult to determine to a nicety. Use a two megohm grid leak. Peanut Tube (PSTn EPH, Jeffersonvilie, Ind. In the November 25 issue you have a hook-up using spider web coils (Reinartz circuit). Could I use the detector panel hook-up with a dry cell WD-11 tube with good results? If so how far should I receive with a 75-foot, two-wire, L-type antenna. 30 feet high, with a 50-foot lead-in? A. The WD-11 tube may be used satisfactorily in the Reinartz circuit as suggested. The range of this receiver, under all favorable conditions of construction and location, should be approximately five hundred miles. Patent xnfringment (1S91) JPW, Oil City, Fain order to settle an argument I am taking the liberty of writing you to ask if the circuit used in the Reinartz tuner described in the November 25 issue of Radio Digest by H. J. Mars is patented. In other words, if a person should build a receiving set as described to be sold, would he be infringing or violating a patent? A. All regenerative circuits come under the Armstrong Patents and are controlled by the Westinghouse Electric and Manufacturing Co. Seventeen other companies own licenses to manufacture under these patents. The Reinartz tuner embodies the regenerative principle and so comes under this patent. Therefore to sell same without a license is an infringement and amenable to the law. Reinartz and Honeycomb Coils (1974) JDG-, Chicago, I1L Will you kindly tell me through the Q. & A. columns of Radio Digest if it would be practical to use honeycomb coils as loading inductances to receive wavelengths of over 5,000 meters in connection with the Reinartz circuit explained in a recent issue? If so how many will be necessary and where should they be placed? . This circuit certainly is a wonder on short waves and I wish to use it as a long wave receiver if possible. A. It is not advisable to use honeycomb coils as loading inductances with Reinartz circuit. It does not load effectively. It is better to use a long wave set. Reinartz Amplification (1957) WMK, Detroit, Mich. Owing to power lines surrounding my home, the use of any outdoor antenna causes my Reinartz set to hum. My 200foot attic aerial will only give local reception. Will hook-up Q. & A.-1552, page 15, January 6 issue, work as an amplifier for the Reinartz as well as for the Flewelling set, when plugged in on the phones? Can one step of audio be added as on page 7 of the December 23 issue? "Where can I get the hook-up? THE POPULAR REINARTZ HOOK-UP W VAR.GRID LEAK TtX rvfd. srrvjd. DETECTOR] TUBE ~=~ 6 VOLTS. 60 VOLTS, 1.1.1.1.-* A. Hook-up Q. & A.-1552, page 15, January 6 Radio Digest will work satisfactorily if plugged in on your Reinartz set phone jack. See page 13, November 25 issue, for complete diagram of Reinartz tuner, detector, and amplifier. Variable Condensers (1846) AD, Highland Park, Mich. Having a Reinartz single tube set, with which I have obtained much better results than with several other hook-ups that I have tried, I would like to ask a few questions about the Hook-up Q. & A.-1434, November 25 issue: One variable condenser is marked .0005 mfd. What should the other one be? What voltage should the B battery have? What resistance should the potential have? Has this particular set been tried out? I am figuring on using WD-11 tubes. Would Thordarson transformers be all right for the AF and an Erla for RF? Keep your connections tight and your insulation right CONDENSITE CELORON Is the highest type of RADIO PANEL INSULATION We are authorized distributors and carry complete stocks Price per square inch cot to any size ~, lV8c 2c Vs 3/16' Immediate Service 3c Write us for information on high grade Radio Material. Bremer-TuUy Mfg. Company 532-536 S. Canal Street, Chicago THE ONLY GENUINE AND GUARANTEED The New Wave" Coupler TRADE MABK Wave Length— 150 to 3000 Meters FLAT AND BACK WOUND Eliminates ^e ose °' aU/Varlometers, Varioeouplers and Loading Cbils, For the Novict inasmuch as it performs in one compact unit the functions of all of these devices combined. .The "All Ware" Coupler enables the greenest novice to attain the same results attained by the expert in building the simplest, most compact and most efficient radio receiving set possible. R«» Pr«»r»ar«»rl for increases in the wave lengths of the broadcasting uc * rc|jarcu stations which are necessitated by their increasing number. UniTCiial Rociilts AH-am*«l.^In(,lTldual usera of **« "Au unusual KeSUlIS ATiamea— Wave" Coupler have written us that in Rhode Island it is nothing unusual to bring in stations as far south as Havana, Cuba, while in Mobile. Alabama, Newark, X. J., is brought in daily. Rpwarp f»f Imifatinne of the "M1 Wa«" Coupler. Look for the BlianonS^;ra(ia)a,ki •A11 wave" on the rotor. $9 (\f\ Six_effident Hook-ups sent upon receipt of 10c stamps or Free with each "All Wave" Coupler Thousands of Satisfied Users Patents Granted and Pending Guaranteed with an Absolute Money-Back Guarantee to Operate as Advertised CAPITOL PHONOLIER CORPORATION 56 Lafayette Street, New York City A. With reference to the Reinartz tuner detailed in the November 25 issue of Radio Digest, the variable condensers should be of .0005 and .001 mfd. capacity. The plate battery voltage should be from forty to sixty. Resistance of potentiometer should be about two hundred ohms. The apparatus you mention will serve effectively. This circuit has been proven and is meeting with much enthusiasm wherever used. Tested Detector Tubes Standard Tubes for 6-volt *0 »7e Detector ^£t.iO Standard Tubes for 6-volt *Q QC Amplifier $0.00 Every Tube guaranteed to functbn. LUX MFCCO^^HicfGo51 Set Will Not Regenerate (1275) CR, Jameson, Mo. I would like to ask a question concerning my homemade receiving set which will not regenerate. I have tried all means of regeneration but with no success. Could there be any other reasons for this? I am using a variocoupler, variable condenser shunted across secondary, detector, and one-stage amplifier. In super-regeneration, does it make any particular difference -about placing a de* tector or amplifier tube in the first tube socket? A. — Your set, as now, is not designed regenerative. For regeneration a tickler coil is necessary. This is usually a variometer placed in the plate circuit at any convenient point. An amplifying tube is necessary in the first tube socket of a super. For Sale — Westinghouse Aeriola Sr. two-stage amplifier with tubes, $52.00 Amrad shortwave receiver and two-stage amplifier, $92.00. Amrad two-stage Radio frequency amplifier with transformers, $2/. 00. Burgess B Batteries, $2.50. MESABA SPECIALTY COMPANY. 310 Third Street South Virginia, Minn. GOVT RADIO STORAGE BATTERIES Willard 2 volt 40 A. H. for WD-11 tubes $4.75? 6 volts Edison $7.75; Edison B battery elements 4c each. FLEWELLING .006 CONDENSERS Bakelite mounted with binding posts. Set of three $2 90 variable Grid Condensers .00025 or .0005 max. 45c. ' FLEWELLING SPIDER WEB COILS Easier tuning; clearer signals; green silk wound $1 75 each. FLEWELLING VARIABLE GRID LEAKS Give clearer music, louder signals on any circuit. 75c. REINARTZ LATEST SPIDER WEB COILS Double green silk winding on Bakelite spider Jl 95 Choke coils for Beinartz detector plate circuit $1.70. VERNIER FOR VARIABLE CONDENSER Eits any condenser. Requires no extra space. 95c. HI-POWER AMPLIFYING TRANSFORMERS Best made. Louder signals. Cannot bum out S2 95 Jacks. Open circuit .46: Sin. eir. .54; Doub. cir .62; Plugs .56: 3000 meter long wave couplers 57.95. We save you money. Tell us what you need. Include Postage With Tour Order QUALITY RADIO SHOP, RICHMOND, IND. ■ i^CSSCO' W. B. 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Variable, highest quality guaranteed. Large size 1.45 $ 1.75 B Battery, 22'/2 V. Variable, highest quality guaranteed. Small size $ 7.00 Westinghouse Storage B Battery $1.00 W. D. II A Battery PANELS: Guaranteed Genuine Bakelite Panels — 7x10, $1.25; 7X18. $1.85; 9x10. $1.60; 6x9. 95o: 5x5, 47c; 5x9. 95c: 6x12, $1.25; 7x12. $1.50; 7x9, $1.15; 12x14, $3; 7x24 „ Sphagetti. per length 07'/2 Special Electric Soldering Iron, two heat 455 20c Bezel 15 J5 5.50 .55 3.00 INCLUDING PHONES, TUBES, AERIAL and BATTERIES CONDENSERS: $5.00 23-pl. Variable Condenser $ 1.65 $5.50 43-pl. Variable Condenser 1.95 3-plate Vernier Variable Condenser 70 50c Mica Condensers 25 Thordarson Grid Condenser 15 Bronze Bus Bar, tinned, ft 02 PHONES: $8.00 Brandes Phones 5.75 $5.00 Murdock Phones 3.55 $1.00 Freshman Variable Grid Leak 75 WIRE* 100 ft coil No. 14, 7-strand pure copper Aerial Wire .50 Magnet Wire 20 per cent, off list. RHEOSTATS: $1.00 Rheostat ....1..... .32 Homecharger De Luxe 13.25 JohnsManville Blk. Com. Tubes, 3-in .25 DETECTORS: $ .75 Crystal Detector •»»•• .35 $1.50 Mulri Jack 1.15 $1.50 Twin Adapter 1.15 SI. 25 Universal Plug .75 BATTERY CHARGERS: $18.00 Westinghouse Battery Chargers 13.25 $19.50 Westlnghouso Battery Chargers far A. & B. Batteries 16.00 70c Open Circuit Jack 25 35c Double Circuit 30 75c Battery Hydrometer 35 $20.00 Wessco Battery Charger, highest quality, guaranteed. Special Introductory Price 11.95 KNIFE SWITCHES: Knife Switch S. P. S. T .1 14 Knife Switch S. P. D. T 22 Knife Switch D. P. D. T 35 Wooden Horn 5.50 Contact Points 06 $5.00 Standard Metal Horn 4.50 $7.50 Standard Metal Horn 7.00 $22.00 Pathe Large Speaker 15.00 $3.00 Radio Frequency Transformer 1.50 MAGNA VOX— NEW TYPE, NEW CONSTRUCTION, NEW FINISH— ON SALE $10.00 Guaranteed highest quality Wessco Phones. Superior to any phone on the market at the price. Introductory price $4.95