The Radio Amateur's Handbook, Volume 20, Part 1943

adjusted alternating current amateur radio amateur station antenna tuner audio bakelite band battery bias C₁ capacity cathode chassis Class-C Amp coil connected coupling crystal detector diagram dial diode feeder filament filter frequency frequency meter grid circuit grid current grid leak ground Hammarlund harmonic impedance inches inductance input insulators length license load maximum megohm meter mica microphone mixer modulation mounted ohms operation oscillator panel parallel Pentode plate circuit plate current plate voltage Plate-Mod plug Power Amplifier power output power supply quency r.f. amplifier r.f. choke R₁ radiation range ratio reactance receiver rectifier resistance resistor resonance screen shaft shield shown in Fig signal socket spacing stage Steatite switch tank circuit Telegraphy terminals Tetrode tion trans transformer transmission transmitter Triode tube tube socket tuning condenser turns unit variable volts watt wave wire