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Chapter 14 VACUUM TUBE RECEIVERS AND TRANSMITTERS
www.concept9.co.ukCRYSTAL SETS TO SIDEBAND ... VACUUM TUBE RECEIVERS AND TRANSMITTERS My old-tech QRP project began the day I acquired an ancient type 216A vacuum tube. It’s a wondrous Jules Verne-looking device with a round glass ball mounted on an elaborate nickel-plated brass base. It’s the simplest three-element “triode” with all its guts in plain view.
Chapter 14 VACUUM TUBE RECEIVERS AND TRANSMITTERS
kambing.ui.ac.idCRYSTAL SETS TO SIDEBAND ... VACUUM TUBE RECEIVERS AND TRANSMITTERS My old-tech QRP project began the day I acquired an ancient type 216A vacuum tube. ... crystal-controlled transmitter, just like the old days. As you’ll see, there were problems with this dream.