Radio Broadcast (Nov 1926-Apr 1927)

RADIO BROADCAST ADVERTISER 71 Smooth as Velvet Webster "DUO-CHOKE" and Raytheon Rectifier Make Perfect Power Supply nPHE remarkable series of Webster power units make possible a source of everready, inexpensive, noiseless current supply that gives any capacity radio receiver the greatest distance, most volume and clearest tonal quality. It eliminates the noises from run down B batteries. Completely filters out all A. C. hum from the loud speaker. NO ACID TO SPILL. No filament to burn up. Just connect the unit to your light ng socket, adjust the supply to the exact requirement of YOUR RECEIVER for BEST QUALITY and you have a PERFECT CURRENT SUPPLY for years to come. Costs far less to operate than the current requirement of one io-watt lamp. «B" and "C" Current from ONE unit Something new! A "B" and "G" unit that gets the greatest distance, most volume and clearest tone quality from super-power receivers. The "Little Giant B-C" under load delivers a surplus current supply and ALL TAPS ARE MINUTELY CONTROLLABLE TO THE EXACT REQUIREMENTS FOR BEST QUALITY OF ANY RADIO RECEIVER now on the market. The adjustments are easily made and when set require no further attention. The detector B supply is variable from 5 to 90 volts; the intermediate amplifier B from 20 to 125 volts; the power tube B supply from 12? to 180 volts; the intermediate C supply from o to 45 volts; and the power tube C supply from o to 45 volts. May be used without ground on loop receiver. You will not hide the Webster Power Unit in a corner. On the stand, beside the radio set, its beauty adds a touch of distinction. Price complete with Raytheon B. H. tube #50.00 THE WEBSTER COMPANY 3506 West Lake St. Chicago Webster "Super B" The Webster "Super B" has three voltages with positive variable controls. This unit delivers sufficient surplus cur* rent that with its wide range of smooth positive variable control in the power amplifier tap, as well as the detector and .intermediate taps, the "B" 6upply may be adjusted to 'the exact needs for best reception of any receiver, and counterbalance any variation in the electric light line voltage. All parts in the circuit are insulated from the case. The detector supply may be varied from 5 to 7j volts, the intermediate amplifier supply from oo to 125 volts and the power tube supply from 125 to r^o volts — to 180 volts with the B H Raytheon — same price. 1 When getting a straight "B" eliminator for over 5; tube set, insist on the WEBSTER SUPER B. Price with Raytheon B tube $39.45© Popular-B' "POPULAR-B"-Open type — All connecting wires are con' cealed in the base which is en' closed with a felt protected iron bottom. All parts in cn> cuit insulated from supporting base. This unit delivers ample noiselesi "B" current for the detector supply, intermediate amplifier supply and power tube supply for any transformer — coupled, resistance — or impedance' coupled receiver requiring up to 35 milliamperes, 7 standard tubes or 6 standard and one power tube, fully wired, ready to connect and plug in. Price — Complete with Raytheon B tube, cord and plug $35.00 "Little Giant B-C," the Webster "Super B" and "Popular B" are for operation on no (100-125) volt 60 (5060) cycle AG supply. Prices slightly higher in Canada and west of Rockies. If your distributor does not have the Webster units do not accept a substitute. It will pay you to fill out attached coupon and mail to us at once. SMail Coupon NOW! WEBSTER COMPANY 3506 Lake Street Chicago, 111. Without obligating me in any way, please send me your free booklet "Improv ing your Radio" and name of nearest dealer. T^ame Address . City Dealers! Write on your own letterhead for full details and name of nearest distributor. ■jfc Examined and approved by Radio Broadcast if