Radio, miracle of the 20th century ... a story of human achievement that stands unrivalled in the history of humanity, together with a colorful portrayal, giving a broad, general view of the whole subject of wireless telegraph and telephone and its marvelous development (1922)
Drinker, Frederick E. [from old catalog], Lewis, James G., [from old catalog] joint author · [Philadelphia, Printed by National publishing co.] · leaf 337
the plate potential with a microphone are shownin figure 52. The coils marked R, F, C, are inductancesof values large enough to prevent the passage of radiofrequency oscillations. RFCi, prevents the oscillationfrom passing through the plate battery. The grid andfilament are connected by the… … R.F.C.! Tel. Bottery
Radio
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
