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> Impoverished radio experimenter i - how to book
Impoverished radio experimenter i - how to book
Experimenter s notes on Vacuum Tube Substitutions, Inexpensive Tube Power Supply, Grid-Leak Detectors, Regenerative Receiver and more!
You must try building a simple radio with tubes! Its easy and its cheap! (And don t tell me that that doesn t appeal to you ) Do you remember the excitement when you built your first crystal set? This is even better.
You can substitute later, common vacuum tubes for the rare, early types you see in early radio circuits and get a beautifully working radio. Why spend $10 to $30 for a 201A triode? A $0.50 6C5 will do the job. Here are tips, hints, suggestions and secrets for substituting common inexpensive tubes in early circuits.
You also get details on a crystal set that was converted to a grid-leak radio. You ll get details on how various tubes worked in the circuit.
You get pages of tube charts and basing diagrams, a reprint on tube theory from 1931, a bibliography of research papers from the late 20 s, and you get a brief demonstration of a one-tube regenerative receiver built with a 6SN7 glass tube from the 1950 s (had to scrape the mud off it) using a circuit from 1927. It uses a home-made variable capacitor and the home-made power supply described.
Early radio circuits are simple. You don t HAVE to use the exact parts specified. Mix, match, substitute and, above all, do it on the cheap. Old time radio fun for pennies. That is what it is all about.
