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Radio made easy
The language of radio
12 other sections not shown
25 volts adjusted aerial coil amplifier stage Audio frequency band base basic battery broadcast capacitance carbon-track carrier wave ceramic characteristics collector conductors construction crystal set d.c. resistance detector diameter diode earpiece earth connection electrical impulses electrolytic capacitor emitter equivalent etching external aerial feedback ferrite rod germanium headphones heat high-impedance input insulated integrated circuit leads length loudspeaker low-impedance matched microphone miniature modulated n-p-n transistor normally number of components number of turns ohms optimum oscillator output load p-N-p transistor Paxolin panel PC board phones picofarads potentiometer push-pull output radio range reactance reflex receiver regenerative receiver resistance values RF signal shown in Fig signal frequency signal strength simple Single-transistor solder speaker stages of amplification suitable superhet switch tag strip tapping point temperature TRF receiver trimmer capacitor tuned circuit tuning capacitor tuning coil usually variable capacitor vary voltage volts or greater volume control watt wire-wound