AMERICAN MARCONI

Model 112 carborundum receiver (1917). That model, cheaper than the usual commercial 106 model, was mostly designed for cargos and small ships. The production starts in january or february of 1917 and was probably stopped rapidly with the entry of US country into the war. .

FEDERAL

Model 61, 6 tubes receiver (1923)

NEUTROWOUND

Model 1927, blue version

RCA

Models Radiola III (left) and IIIA (right). Most famous american models from the 20's.

Model "Panatrope with Radiola" mains superhet receiver. Composed of a "Radiola 30" 7 tubes (199) receiver + power supply + Rice Kellogs dynamic speaker + General Electric direct drive turntable. (C1927)

Modèle "Panatrope with Radiola", superhétérodyne secteur. Composé d'un récepteur "Radiola 30", 7 lampes (199), de son alimentation, d'un HP dynamique Rice-Kellogs et d'une platine à entraînement direct Général Electric (C1927)

ROGERS (Canada)

Model "Batteryless" (1926-28). One of the firsts american AC radio.

American Pathé speaker.

Modèle "Batteryless" (1926-28). L'un des tout premiers poste secteur americain (AC).

ROGERS (Canada)

Inside view