curprev12:4712:47, 8 October 2022 86.162.147.159talk 154,330 bytes+5 →The first vacuum-tube receivers: Reference did not state that audions specifically were used for further amplification. De Forest's audion was actually useless for amplification because it had a very very non-linear characteristic. De Forest later made vacuum tubes as well but claimed they were audions as he did not understand the difference but wanted to claim patent infringement.undo
curprev17:1517:15, 1 June 2022 Robert Sledtalkcontribs m154,323 bytes+1,276 Add "console radio" to "types of broadcast receivers", also add "mantel or mantle radio". Add reference to powering portable radios from outlets, solar and hand cranks.undo