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Your Radio Problems Solved for 30 Cents in Stamps
IF YOU are constructing a receiving set, a battery charger, a loading coil, a condenser, or a transformer and you need help in the way of clear diagrams and full detailed descriptions of that very thing you may have it by return mail.
We have laid aside a limited number of back numbers of Radio Age for you. Below we are listing the hook-ups and circuit diagrams to be found in these magazines. Select the ones you want, enclose 30 cents in stamps for each one desired.
, We advise immediate attention to this as the stock of back numbers is diminishing rapidly.
May, 1922
— How to make a simple Crystal Set for $6.
June, 1922
— How to make a Receiving Transformer. — -Aerials under ground and under water. — Electric light wires as auxiliary to radio.
September, 1922
— Bank uses radio to serve public.
— How to construct the Reinartz Receiver.
— Federal Act regulating radio.
October, 1922
— How to make a Tube Unit for $23 to $37. — How to make an Audio Frequency Amplifying Transformer.
November, 1922
— Photo-electric Detector Tubes.
— Design of a portable short-wave radio wavemeter.
December, 1922
— Home-made battery charger for $3.00. — Principles of radio receiving equipment.
January, 1923
— How to make a sharp-tuning Crystal Detector. — Fixed condensers in home-made receiving sets. — Description of loading coil for simple sets.
March, 1923
— Layout and drilling for Reinartz Tuner, with amplification. — How to make the Crystal Set do long distance work. — ^ Wired wireless.
— How to make an Audio Frequency amplifier. — Symbols used in radio diagrams.
April, 1923
— The Kopprasch circuit.
— How to make a onetube loop aerial set.
— A two-circuit Crystal Set.
May, 1923
— How to make the Erla single-tube reflex receiver. — How to make a portable Reinartz set for summer use
June, 1923
— How to build the new Kaufman receiver. — What about your antenna? — Use of Rubber for radio parts.
July, 1923
— The Grimes inverse duplex system. — How to read and follow symbols. — Proper antenna for tuning.
August, 1923
— Constru3tion of the Cockaday four-circuit tuner. — An efficient two-stage amplifier. — A simple buzzer transmitting set.
September, 1923
— How to load your set to receive new wave lengths.
— Simple Radio Frequency Receiver.
— Radio with the MacMillan expedition.
October, 1923
— The Four-Tube Neutrodyne. —Your First Tube Set.
November, 1923
— The Super-Heterodyne. — A Three-Circuit Tuner. — How to Learn Code.
RADIO AGE, Inc.
500-510 North Dearborn Street, -------- CHICAGO, ILL.