. QST . thats built for rugged service; and the con-trols are comfortably placed for lengthy DXoperations. But, its whats inside the cabinetthats important. For example, the HQ-140-X offers a profes-sional-type tube lineup. The use of a separatemixer (6BE6) and oscillator (6C4) contributeto the high degree of oscillator stability. Modern6BA6s are used for the RF amplifier and for allthree stages of IF amplication for maximumefficiency. The nine individual sections of the band-spreadcapacitor, and the six sections that make up themain tuning capacitor, at all times maintain theproper L/C ratio
. QST . thats built for rugged service; and the con-trols are comfortably placed for lengthy DXoperations. But, its whats inside the cabinetthats important. For example, the HQ-140-X offers a profes-sional-type tube lineup. The use of a separatemixer (6BE6) and oscillator (6C4) contributeto the high degree of oscillator stability. Modern6BA6s are used for the RF amplifier and for allthree stages of IF amplication for maximumefficiency. The nine individual sections of the band-spreadcapacitor, and the six sections that make up themain tuning capacitor, at all times maintain theproper L/C ratio regardless of what part of thereceivers range (540 Kc to 31 Mc) you are heavy brass, soldered to their shafts,built into a large sturdy frame for rugged us*. Features like those described above rate high withhams the world over. For detailed information on theHQ-140-X, write to The Hammarlund ManufacturingCo., Inc., 460 West 34th Street, New York 1, New for Bulletin R4. BlUNU SlHi 85. MODEL GRID DIP METER KIT The invaluable instrument for allHams. Numerous applicationssuch as pretuning, neutralization,locating parasitics, correcting TVI,adjusting antennas, design pro-cedures, etc. Receiver applicationsinclude measuring C, L and Q ofcomponents—determining RF cir-cuit resonant frequencies. Covers 80,40. 20,11,10, 6, 2, and1 i meter Ham bands. Completefrequency coverage from 2—250Mc, using ready-wound plug-incoils provided with the kit. Acces-sory coil kit. Part 341-A at low frequency range to350 Kc. Dial correlation curvesfurnished. ■ ^^fH Compact construction, one hand I l^fldU Ship. Wt. operation, AC transformer oper- I J/ ^ 4 lbs. ated. variable sensitivity control,t humb wheel drive, and direct read-ing calibrations. Precalibrated dialwith additional blank dials for individual calibration. Youlllike the ready convenience and smart appearance of thiskit with its baked enamel panel and crackle finish cabinet. ANTENNA COUPLER KIT The
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
