Radio age (Jan-Dec 1925)

RADIO AGE for April, 1925 The Magazine of the Hour 45 we will not go into detail. The by-pass condenser across the "B" negative and the phone connection of the variometer should have a capacity of .0005. It might or might not be necessary to use this, and the experimenter is advised to try the circuit both ways to determine which is the more effective. As Mr. Jones was kind enough to offer his services to the fans, we wish one or two of you would drop him a line and let him know just what results you are having with his "pet circuit." u^ oco5 ffl 2-Meos ■> .occ z 5 UVWJA -/I + H II II * B-zz'A ir .0005 We received the following letter from one of the RADIO AGE fans in Havana, Cuba: RADIO AGE, Editor, Pick-Ups and Hook-Ups Section, Dear Sir: I am a radio fan and also one great reader of RADIO AGE because I think it is the best radio magazine ever published. Everything has a consequence, and my consequence of being one of the many readers of RADIO AGE is that I find in its columns a great quantity of hook-ups, all of them of the first rate. I have proved some of them, always with excellent results, and lastly I have make the "Tuned Plate Regenerative" great pleasure to know with what results positive wire to the "A" negative wire which appears in the blueprint section 0ur efforts are being received by people on the vacuum tube socket "T3." If of January's issue, and, "by jingo," on the other end of the line. Letters you will omit this connection, everything it gives excellent DX, so "I'm satisfied." containing compliments are a source of will work out correctly. Those of you I have received a great quantity in pleasure; not that those of a constructive, who follow the wiring diagram, (Fig, 1), United States and also Mexico and critical nature, are not welcome. We will not experience any inconvenience, Porto Rico; some of them are: KFDM, want to receive them at any cost, as as that drawing is correct. The mistake WGY, WMC, WLW, WOO, KDKA, they enable us to give the fans just what was made only on the isometric drawing. WOR, WQAM, WEBH,_ WEAF^ and they want. But nevertheless, a compli Arthur Cantrell, a new dial twister, gives us the following list of stations The circuit used by E. H. Jones and from which he has had some excellent results. The coil is tapped at the 15th, 32nd, 45th, 60th and 80th turns. some others. I live near Station PWX which comes in very loud in the phones, and can operate a loud speaker with medium volume, and excellent musical tone. I have an antenna of two wires, 80 feet long, and I use low-loss parts. The only thing that I need now to be happy is to be one "Dial Twister." "What I'll do" in the mean time?, "Experiment" is the best policy. Very truly yours, GASPAR A. CARVAJAL. Calle, Infanta & San Miguel, No. 18, We want t0 correct a mistake that Havana, Cuba. was ma(je ;n tne blueprint section in It is with a feeling of pride that we the February issue. The draftsman^ in publish the above letter, as it gives us making the drawing, connected the "A" ment is a compliment, and although we might blush, there are times when we like to blush. Gaspar wants to become a member of the Dial Twisters. He states that it is the only thing he "now needs to be happy." Are we going to deny him this happiness? Most emphatically, NO. We welcome him to the "fraternity "with the proverbial open arms. Don't you think he deserves it, fellows? He does? Let him enter. that he has listened to on his single tube "Baby Heterodyne." His letter and list of stations are as follows: RADIO AGE, Gentlemen: I have a one tube "Baby Heterodyne" set made from RADIO AGE specifications. I think it is a great set, and I am having wonderful results with it. Enclosed you will find a list of stations that I have received. Do you think it will admit me to the Dial Twisters? I have been trying hard to obtain a button. KDKA, WGR, WSAI, WGY, WBZ, WAAM, WEAN, WCBD, WTAM, WHAM, WEBH, WHN, WLS, KFKX, WGN, WLW, WTAS, WHAZ, WSB, WDAF, WEEI, WGAZ, WREO, WGBS, CNRO, CFCA, WFBI, WFFA, CKAC, WOC, WCAE, WEAO, WEAF, WJDD, WEAP, WOR, WEAR and WSP._ Not so very many, but then I think it is pretty good for a single tube set. Yours very truly, ARTHUR CANTRELL, 20 Orchard St., Auburn, N. Y. What say, fellows? Does his list merit a D. T. button? We think it does, so consider yourself admitted to the order, Art. In the Pick-Ups and Hook-Ups section of the March issue, in the wiring diagram of the reflex circuit contributed by Mr. Dolan, of Aurora, 111., we have shown the negative terminal of the "B" battery connected to the negative and positive terminal of the "A" battery. This is a mistake. And we wish to apologize for any trouble we might have caused you. Wiring, Diagram for the receiving circuit described by William Vreeiand. A four The negative terminal of the "B" inch tube is used to wind the tuning inductance. Mr. Vreeiand has had very good sue battery should have been connected ^to cess with this circuit, and for that reason we are passing it along. the negative terminal only of the "A"