The radio transmitter changes this power from 2, 000 volts direct-current to alternating-current power at a frequency of ... 4, which carry a wide variety of frequency, this diagram has been divided into four sections by means of the dotted lines at the right. ... the filament, each half of the resistor being shunted by a condenser for by-passing the radio and audio frequency circuits. ... Waves and Frequencies The four 250 watt power tubes in the upper part of the set are the oscillators, which, anbsp;...
|Title||:||Hardware Dealers' Magazine|