The talking machine world (July-Dec 1926)

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October 15, 1926 THE TALKING MACHINE WORLD 77 FERRYMAN iU RADIO TUBES ■ PC II R YM ANa ^^Distance without Distortion*^ Double Filament! Extra Capacity! 'X. Q Patented June 22, 1926 Above is the clear glass demonstrating tube showing the patented Ferryman Bridge which holds the elements in place at the distance of greatest efficiency. Ordinary jars or jolts do not affect Ferryman Tubes. Notice the double filament which distributes the electron emission over the full area of the plate, giving greater capacity without overloading. You get natural tone for the life of the tube and the life of the tube is exceptionally long. Perryman Double Filament The filament of Perryman Radio Tubes with the patented Perryman bridge are doubled to form a letter M. This twin construction not only exposes a greater area of filament surface, but it doubles the area of electron emission and increases the capacity of the tube. The real result is a tube that does its appointed work more easily, giving greater volume without distortion. Its longer life is a distinct economy. Perryman authorized distributors carry ample stocks and can service dealers on sales helps and advertising material. The dealer who anticipates his requirements v^ill greatly assist his distributor in making timely deliveries. This will be a big Perryman year. Type R.H. 201-A Amplifier-Detector New Standard Base with tong pini Type P. D. 200-A Super-Sensitive Detector New Standard Base with long pins Type P,.A. 171 Power Amplifier New Standard Base with long pins Type R.H. 199 Amplifler-De*ector New Standard Base witii long pins Type R.H. 199 Amplifier-Detector Adapter Base witli sfiort pins Type R.H. 199 AmpliflEr-Detector iVliniature Base with short pins Type P.A. 210 Super-Power Amplifier New Standard Base with long pins Type P.R. 213 Full Wave Rectifier New Standard Base with long pins PERRYMAN ELECTRIC CO., INC. This Perryman catalog "Just ofi the Press" lists and illustrates the complete line of Perryman Tubes, giving all characteristics, sizes, etc. Send for your copy. ^ 33 West 60th St., New York, N. Y. Dept. T. Gentlemen: Kindly send me a copy of your latest catalog. Name Address My distribuior PERRYMAN LABORATORIES AND PLANT NORTH BERGEN, N. J. PERRYMAN ELECTRIC CO., INC. SALES AND EXECUTIVE OFFICES 33 W. 60th ST., N. Y. C.