Looking at some radios

https://makertube.net/w/sK3zofQMnSUrCBq51mTdCj

"Bakelite was the first plastic used to make radio cases, allowing for sleek, modern designs not possible with wooden construction. Invented in 1907 by Belgian-born chemist Leo Hendrik Baekeland (1863-1944) at his home laboratory in Yonkers, New York, Bakelite was the tradename for a lightweight, easily molded plastic, thermosetting phenolic resin. While the color of Bakelite was initially a translucent amber, the addition of fillers and heat in the manufacturing process changed the plastic into its characteristically opaque, dark brown color. Do you own any Bakelite? Radio is courtesy of Steve Kushman. "On the Radio" is on display, post-security, in Terminal 3. http://bit.ly/RadioSFO" This was posted to our Instagram account on April 12, 2018 – https://millsfield.sfomuseum.org/instagram/1729358359/

"Crystal sets received radio signals during the earliest days of broadcasting. These simple radios did not operate from batteries or household current-they relied on a semi-conductive mineral known as a crystal and simple circuitry to harness energy directly from radio waves in the air. Crystal sets required a large antenna and a good ground connection to be effective. Due to their low output, crystal sets could not power speakers and listeners wore headsets. Radio Bug courtesy of Steve Kushman "On the Radio" is on display, post-security, in Terminal 3. http://bit.ly/RadioSFO" This was posted to our Instagram account on March 21, 2018 – https://millsfield.sfomuseum.org/instagram/1729358453/

"Transistors are far smaller than vacuum tubes and do not require periodic replacement. Initially too costly for most products, audio transistors found their first use in hearing aids. In 1954, Texas Instruments partnered with Industrial Development Engineering Associates (IDEA) and created the first transistorized radio. Marketed as the Regency TR-1, it featured a built-in speaker and debuted just in time for the holiday season. In 1957, Sony marketed their first pocket-sized radio, the TR-63, followed by the popular TR-510 in 1961. Japanese transistor radios were designed for the American market, and sales quickly outpaced heavier and more-expensive examples made in the United States. Do you own any transistor radios? "On the Radio" is on display, post-security, in Terminal 3. http://bit.ly/RadioSFO" This was posted to our Instagram account on June 29, 2018 – https://millsfield.sfomuseum.org/instagram/1729358039/

Replaced frayed AC line cord with a vintage-style cloth cord complete with an acorn style plug. #vintageradios #tuberadio

After shot with replacement capacitors #vintageradios #tuberadio

Old leaky paper capacitors were the norm #tuberadio #vintageradios