Radio Broadcast (Nov. 1925-Apr 1926)

272 RADIO BROADCAST ADVERTISER Introducing "SUPERUNIT JUNIOR" A little brother to the standard Type A and Type B "Superunits." He measures 5 x 10" and he consists of a stage of tuned R.F., the detector and two stages of Thordarson audio. He has plug-in coils, and the standard set of coils which he uses will tune from 170 to 570 meters when used with the S-C Capacity Element to make a one dial set. Other coils for other wave lengths. He makes the most efficient set for use with an aerial and there are just 11 connections to complete him. YOU SHOULD MAKE HIS ACQUAINTANCE! Price, complete with instructions $37.50 MATERIALS NEEDED FOR A COMPLETE SET 1 "Superunit, Jr." I S-C Capacity Element or 2 .0005 condensers. 1 Front panel, size 7 x 10 or larger. 2 Bradleystats. 1 Double circuit jack. 1 Single circuit jack. Note: No baseboard is required Hanscom Radio Devices ^ Mfgrs. of the S-C Capacity Element, the one dial control for two control sets. Woonsocket, R. I., U. S. A. SOME startling new ideas on audio amplification will be given in an article in the January Radio Broadcast by an authority on the subject, Mr. Kendall Clough. B Y P A S S — Prevent "B" voltage fluctuation — Allow undistorted amplification — Make possible full bass tones — Improve reception with "B" Supply Units. Made in \, \, 1, 2, 3 and 4 Microfarad sizes Order from Your Jobber POTTER MANUFACTURING COMPANY North Chicago, Illinois BAKELITE BASE TWENTY LOOSE CONNECTIONS IN A FIVE TUBE SET That's possible — but not if you use the new EBY Cushion Sockets. These ingenious devices make it possible to maintain a positive wiping contact at all times, regardless of the size of the tube prong or the amount of solder on the prong tip. By a special shock-absorbing feature EBY Cushion Sockets not only eliminate microphonic noises but are a guarantee against tube damage. Old style tubes will not give the advantages of interchangeability and other features of the new U. X. Tubes. EBY Cushion Sockets are especially built for them. The list price for the EBY Cushion Socket is 60c, If your dealer can't supply you write direct to us sending his name. H. H. EBY MFG. COMPANY 4710 Stenton Ave. Philadelphia, Pa. Makers of EBY Quality Binding Posts An inexpensive short wave transmitter operating entirely on dry batteries will be described in the January issue ... ; of Radio Broadcast. _ F" Q»ali|y Corbett'S Cabinet'S For Q"ality HAMMARLUND-ROBERTS CABINET Built exactly to specifications with fancy panel effect line grooves, full length piano hinge and lid stay. GENUINE AMERICAN WALNUT... $14.00 GENUINE MAHOGANY 14.00 MAHOGANY OR WALNUT FINISH 11.50 Shipping charges prepaid "CORBETT'S CABINETS'* have been preferred for several years by quality set builders and are unquestioiv ably superior in design and finish. They are backed by our guarantee to please you. Carefully hand-rubbed piano finish. Well packed for shipment. WRITE FOR CATALOG showing attractive models for all sizes of radio cabinets, consoles and tables. Jobbers and Dealers write for discounts. CORBETT CABINET MFG. COMPANY St. Marys Pennsylvania If you aro the type of dealer who hustles after business, who isn't content to wait for trade to come in but who takes sets out to demonstrate, can talk and sell quality merchandise, and knows Ilndio values, we have a big proposition for you. Aro you that dealer? 50% Discount to Dealers Wo manufacture plete line of high > dealers at 50$ tors for more than f FREE « (EVERY i /MONTH It J ^~^J ami: i ' 1410-18 McGee St. : i< \ > i! \ mo mic. en. Depi. T. KaiiHas'Clly. Mo. Originators and World's Largest Manufacturers of Self Fluxing Solder YOUR DEALER CAN SUPPLY YOU ALMOST TOO GOOD TO BE TRUE X-L VARIO DENSERS INSTALL THEM IN YOUR SET AND LEAVE THEM SPEAK FOR THEMSELVES Endorsed and Used by the Foremost Radio Engineers MODEL N — Capacity range 1.8 to 20 micro-microfarads, for balance in Roberts two tube. BrowningDrake. McMurdo Silver's Knockout, Neutrodyne and tuned radio frequency circuits. Price $1.00 MODEL G— Two capacity ranges, .00016 to .00055 and .0003 to .001 Microfarads, for the Cockaday circuit, filter and intermediate frequency tuning in super-heterodyne and positive grid bias in all sets. Price $1.50 X-L RADIO LABORATORIES 2424 Lincoln Avenue CHICAGO ■jt Tested and approved bv Radio Broadcast *k