. QST . only$495 10 Volt center tapped — 10AMP secondary. Primary tappedsame as plate transformer. 10,000Volt insulation. Makes an excel-lent auto-transformer. 4 long x5,H high X i wide. .5 MFD-4000 Volt Sprague Vitamin Qoval can capacitors. Single insulated ter-minals. (Can is common.) Use several ofthese in parallel for a low cost filter cajiacitor2x 1 4-5 8. 10 for *7i? $ 1 00 each TERMS: 25% Deposit with Order. Balance or Paymentwith Order BOULEVARD ELECTRONICS, INC. 1229 W. WASHINGTON BLVD., CHICAGO 7, ILLINOIS. yiBROPLEX Semi-AutomaticKey The Vibroplex bug does all the arm-tiring
. QST . only$495 10 Volt center tapped — 10AMP secondary. Primary tappedsame as plate transformer. 10,000Volt insulation. Makes an excel-lent auto-transformer. 4 long x5,H high X i wide. .5 MFD-4000 Volt Sprague Vitamin Qoval can capacitors. Single insulated ter-minals. (Can is common.) Use several ofthese in parallel for a low cost filter cajiacitor2x 1 4-5 8. 10 for *7i? $ 1 00 each TERMS: 25% Deposit with Order. Balance or Paymentwith Order BOULEVARD ELECTRONICS, INC. 1229 W. WASHINGTON BLVD., CHICAGO 7, ILLINOIS. yiBROPLEX Semi-AutomaticKey The Vibroplex bug does all the arm-tiring work for you —automatically. Relieves nervous and muscular tension sonoticeable when sending by hand. Suits any hand. No specialskill required. Adjustable to any speed and any degree of keytension. Easy to operate. Beginners use it in a matter of min-utes. Built for long life and rough usage. Vibroplex is the otilykey with Jewel movement — insuring better and easierkeying. Used and recommended by thousands of hams andcommercial operators on land, sea and in the air. Five models,$ to Left-hand models, one dollar more. Orderyours today. At dealers or direct. FREE folder. Headquarters for NEW portables, all modelsand styles of type. Also, REBUILT standardand portable typewriters with ALL CAPITALletters and other styles of type. Quick our prices before you buy! THE VIBROPLEX CO., INC. 833 Broadway New York 3, N. Y.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
