Browse Items (143 total)

Collage of different uses of radio world.

Reclining Native American woman posing seductively as if she was an odalisque from Orientalist-themed paintings from European artists.

This is an example of a shipping envelope that we used to create our GIS map on the legacy/influence page of "The Poinsettia and the Promoter"

A digital scan of The San Diego Herald's article on a Masonic Celebration that occurred in June of 1852

he first amateur superheterodyne receiver, an illustration for a do-it-yourself article in a 1920 amateur radio magazine. The superheterodyne circuit on which virtually all modern receivers are based was invented in 1918 during World War 1 by Edwin…

Young child listening to a radio, 1920-1930. Young child with a set of earphones listening to a radio. The child and the radio sit on a table on a verandah. Part of the verandah balustrade can be seen to the left.

A woman, Florence Violet McKenzie, sitting at a desk listening to an early radio in 1922. Radio broadcasting, which began around the time this picture was taken, caused radio listening to explode from a high-tech hobby to a hugely popular pastime…

1920s TRF radio manufactured by Signal Electric MFG. CO. located in Menominee Mich. Demonstrates early radio construction methods using "breadboard

Photo of an American family in the 1920s listening to a crystal radio. From a 1922 advertisement for Freed-Eisemann radios in Radio World magazine. The small radio is on the table. Crystal sets work off the power received from radio waves, so they…

English: Farmer in 1923 listening to crop reports broadcast from Washington D.C. using a crystal radio. The early crystal radio had a "cat whisker detector" consisting of a fine wire on an adjustable arm that touched the surface of a crystal of the…