Radio Broadcast (Nov 1926-Apr 1927)

438 RADIO BROADCAST ADVERTISER 7 he flux is everything in radio soldering says this Radio Engineer "In our laboratory we made a thoro analysis of the two groups of fluxes (natural and chemical) . We found the natural flux, rosin, the only safe one to use on radio work. Pure rosin, as in Kester Radio Solder, will not fume, sputter, or creep over large areas, and being a hard, dense substance, rosin will not attract and collect dust (carbon particles), which makes an excellent path for leakages. These are the faults of fluxes containing chloride, be it either in paste, liquid or compound form. Any flux containing chloride will eventually cause heavy leakage. Hence they should be strictly avoided. We find Kester Radio Solder the most convenient way to solder on radio work, for it has the proper amount of pure rosin right inside the solder itself. In fact, we used it exclusively on all of our work." There's your guide, radio fans — the approval of an expert radio engineer. Surely there can be no doubt as to what you should use on YOUR SET. A free Sample Tvriteforitnozo KESTER Radio SOLDER the safe solder for radio, requires only heat CHICAGO SOLDER CO. 4ZZX Wrightwood Ave. Chicago, V. S. A. Originators and the World's Largest Manufacturers of Self-fluxing Solder READ RADIO BROADCAST Tamous Now Sold on Easu Terms IDial 6 Tube M3« Both Modda Complete With All Accessories Get Agents Price— Save SO : Great ncwBl Now own o famouB Mnrwood at tho world'oloweet price for real quality — and pay on cnay terms. The only Radio sold dircot on easy terme — proof (hat tli<! Mnr» 1 M 1ST l><) a wonder. A year ahead with 4 bin ev. hinivo iinprovciii.-nta — SuperK.-lo fivilv. I'mv-T-'l ul.e Y'nluuie, New Kaav-'l uniiiE Prineiple, Ni'w T (Jualil v. Wave half— and BOt a Radio that ean't bo beat at ANY price. 30 Days Free Trial Wo trimt you. l'rovo tho Moiwood tho bcBt buy in America. Don't buy a Radio t II you eot our Unity Titiuh. 30 Day* Froo Trial. AkcuI 'a < 'on I'uli'ii I ial I*ow Pri.TJi. It.. Radio pla... new Cnt-Mnk MARWOOD RADIO CORPORATION ? 747-1 1 1 c, Morse Avenue, Chicago, III. Many home-constructors will want to obtain a copy of this booklet as the information contained in it is of such nature as to be very useful both in choosing the method to use in audio amplification and in actually constructing the amplifier. H. E. R. from u'Rummin>h.am,} Soys SAM 'N' HENRY. By Correll and Gosden. Published by the Shrewesbury Publishing Company, Chicago, Illinois. i8g pages. ■ Six illustrations. Price $1.00. SAM 'n' Henry have compiled and published a book called "Sam 'n' Henry" — and that, to this reviewer's notion, is about all there is to say. The Sam V Henry addicts, once knowing that the book exists, will probably rush out and buy it no matter what our comment; and those who aren't followers of Sam V Henry would never buy it anyway. Sam and Henry, if you be among the ignorant, are a couple of colored boys from way down " Bummin'ham," Alabama, now working in Chicago, and every night at 10:00 they hold forth over wgn for a large and enthusiastic audience. The roles were created a year or so ago by Freeman F. Gosden and Charles J. Correll. And the characters art creations, broadly drawn, perhaps, but never out of drawing. Sam is the ignorant, clinging-vine type, but pathetically anxious to improve himself. Henry is pompous, worldly, and smug, actually quite as dumb as Sam but delightfully unaware of the fact. This every-night program, constituting as it does a sort of radio comic strip, is to be judged like Mutt and Jeff, not on its best or worst days but on its average, the which has been consistently fair. The book has presumably been compiled from the best performances of the past year, about twenty-five of them, embracing such episodes as "Taking a Ride on the ' L, '" "At the Shooting Gallery," "At the Fortune Teller's," "Initiation at the Jewels of the Crown," "Sam Gets a Letter from Liza," "The Quack Doctor," etc. Several of them constitute rather good satire of an obvious sort — the burlesque on fraternal organizations in the "Initiation" episode, for example. But of course the best thing about the radio "Sam 'n' Henry" has always been, not what they say, which is frequently dull, but the way they say it. Sam has an amusing, high, piping voice, while Henry's is a beautifully resonant bass, so low that you can almost count the vibrations! The reader who knows the radio characters well enough to reproduce the dialect and intonation as he reads will doubtless have quite a bit of fun out of a perusal of the volume, and if he is sure enough addict, he will probably indulge in reading it aloud to whomever he can persuade to listen. To him we recommend the book. John Wallace. "How Radio Receivers Work" LjOW Radio Receivers Work" by Walter Van * *■ B. Roberts, is obtainable for $i from Radio Broadcast, Booklet Department, Garden City, New York. Doctor Roberts' book is enjoying a wide sale among radio enthusiasts. It provides the novice in radio with a very complete and easily understood discussion of the basic principles involved in modern radio receivers. See that Screw f A screw-driver adjust an X L in crowded places X-L VARIO DENSER Cr*^ "^j^l^^ "l? ESULTS in easier tuning, s^iem -^more distance, volume and clarity — greater stability. Indorsed by leading authorities. Model "N" A slight turn obtains correct tube oscillation on all tuned radio frequency circuits. Neutrodyne, Roberts two tube Browning-Drake, McMurdo Silver's Knockout, etc. capacity range 1.8 to 20 micro-micro farads. Price $1.00 Model *'G" With grid clips obtains the proper grid capacity on Cockaday circuits, filter and intermediate frequency tuning in heterodyne and. positive grid bias in ail sets. Capacity range. Model G-i — .00002 to .0001 MFD Model G-5 — .0001 to .0005 MFD Model G-10 — .0003 to .001 MFD Price $1,50 X-L Push Post. Push it down with your thumb, insert wire, remove pressure and wire is firmly held. Releases instantly. Price 15d Push Post Panel permanently marked in white on black rubber. In box in 1 eluding soldering lugs, raising bushings and screws for mounting, etc. Price $1.50 X-L Radio Laboratories 2424 Lincoln Ave. WE ESTABLISH YOU Co-operative membership in EIA is establishing an honest and industrious man in each locality, regardless of his handicaps or present occupation, in a successful radio industry of Lis own. Young married men preferred. Apply by confidential letter to EQUITABLE INDUSTRIES ASSOCIATION, Dept. B-27, Tribune Bldg., New York Why not subscribe to Radio Broadcast? By the year only #4.00; or two years, $6.00, saving $2.40. Send direct to Doubleday, Page & Company, Garden City, New York. "BRUNO" Develops The Adjustable Bracket You cannot mount upright panels with sloping brackets; neither can you mount sloping panels on upright brackets. You must use one or the other. With "BRUNO" Adjustable Brackets you can mount either panel, upright or sloping. They are adjustable from 45 to 90 degrees. Made of diecast aluminum, moulded just so, permitting plenty of leeway tor the mounting of any size sub-panel. Adjustable brackets Non Adjustable 51.25 a pair 1. 00 a pair By mail or from your dealer Booklet of instructions, circuits and blueprints 25 cents by mail BRUNO RADIO CORPORATION Long Island City New York