Radio age (Jan-Dec 1926)

54 RADIO AGE for February, 1926 The Magazine of the Hour WITH URERS Colored Pencils Useful for Radio Work COLOR plays a part of increasing usefulness throughout the engineering world in connection with diagrams, charts and data sheets not foreseen when the old style colored pencil with thick lead was first introduced. Realizing how many occasions in modern industry and science called for the use of colored pencils with the same diameter as ordinary drawing and writing pencils, the American Lead Pencil Company has originated a new product called the Unique Thin Lead which can be used exactly the same as a black lead pencil — -for writing, figuring, sketching, drawing, etc. Among radio engineers and experimenters, colored pencils have met with special favor as they permit the designation of the various coils, units and circuits by corresponding colors. The same effect is obtained for diagrams as is obtained in working models through the use of vari-colored cable and wire. Palmer Goes Abroad For Radio Tests T^OR the purpose of cooperating offi* cially in the international broadcast tests before and during the week of January 24 and to listen in at sea during the hours when European stations will send programs for American fans, Eric H. Palmer of the Freed-Eisemann Radio Corporation sailed on the "De Grasse" of the French Line on January 6 and will visit the principal broadcasters abroad. Mr. Palmer will report by wireless to the tests committee, regarding reception also of stations in the United States, Canada, and Mexico that reach Europe during this important week in radio. Mr. Palmer will install an official receiving station on the steamship "Paris." National Engineering Co. Has Semi-Assembled Receiver r I :HE National Engineering Company, -*■ just organized, has started production on a five tube tuned radio frequency receiver which will be offered to the public in a semi assembled state. The set is known as the Huntingdon, built by M. B. Benson, chief engineer for the National Engineering Company. Others connected with the new company are M. M. McCabe, Duluth and Minneapolis, and H. W. Coulter, of Chicago. W. J. Knapp, President of the National Carbon Company, makers of Kveready batteries, announces the election of Paul P. Huffard as Vice-President and General Manager of the company. Mr. Huffard began his career in 1905 at the Electrometallurgical Works at Kanawha Falls, Virginia, as chemist, while still a college student. Upon attainment of his degree, he was transferred to the Niagara Falls plant of the Union Carbide and Carbon Corporation, of which he eventually became superintendent. His first position with the National Carbon Company was works manager of the Electrode Plants; later, in charge of production of all the National Carbon Company plants. His present advancement places him in charge of all phases of activities of the National Carbon Company and its associated companies, including the National Carbon Company of San Francisco, and the Canadian National Carbon Company, Limited, of Toronto, Canada. Crosley Takes Over Assets of Amrad ANNOUNCEMENT is made that ■**■ Powell Crosley, Jr., president of the Crosley Radio Corporation, has recently purchased the assets of the American Radio and Research Corporation at Medford Hillside, Mass. A new company is being formed to operate the Amrad organization with Mr. Crosley as chairman of the board, and H. J. Powell, former Amrad president, as the new president and general manager. Amateurs will remember the development of the S tube for rectification by Amrad as well as the Mershon electrolytic condensers. The new organization is to continue operation in the same location. Amsco Adds Socket to Its Line of Products T^HE newest addition to the line of x Amsco products is a universal socket designed to take all sizes of radio tubes, including the standard UX and CX tubes, without adapters. They click into contact, establishing a positive wipe connectiont hat perpetually renews itself each time the tube is removed and replaced. Connection is possible only in one way — the right way — and the tubes lock into place automatically. Another feature of the Amsco universal socket is its compactness and light weight. Not a fraction of an inch is wasted. It is made of mottled green genuine bakelite. All metal parts are of phosphor bronze, electrically tinned for easy soldering. The base is of the non-skid type, with tiny moulded spikes that prevent twisting out of place — making possible the great convenience of one-hole mounting. Interest Abroad In Use of Piezo Crystals T^UROPEAN fans, as well as broad-*-^ casters, are showing considerable interest in Piezo crystal control for transmitters, wavemeters and some types of receivers, according to a communication from Adam Hilger, Ltd., 24 Rochester Place, London, N. W. 1. Two stock sizes made at present by the Hilger firm are the 180 meter and the 350 meter type, these being mounted in boxes of insulating material with binding posts at each end. All-Wave Coils and Shot Panel in Ambu Set T^WO features embodied in the five tube J receiver made by the Ambu Engineering Institute, as recently announced, are "AllWave" inductances for taking care of the band from 40 to 600 meters, and the "shot" method of panel connection where the panel or sub-base is grooved and shot full of molten copper. This latter process does away with the necessity of bus-bar wiring, since all that is necessary is to put in the panel screws which automatically make the required electrical contact with the copper stream and the apparatus.