RCA & NBC
RCA and NBC were related for decades, even before the Whirlpool/RCA association. RCA and NBC were related in the 1930s, or possibly in the late 1920s. It was a logical association because RCA made radios and radio equipment and by supporting NBC, RCA was assured that their products would have a market. In an odd twist, FM radio was invented in the 1930s by Edwin Armstrong who also built radios to recieve FM broadcasts. RCA bought into FM and took control of the technology, made changes to render pre-existing FM systems obsolete and shelved it. All this so that AM NBC wouldn't be threatened. FM was used by the allies during WWII, but the AM vs. FM debate wouldn't proceed until after television became common. By the time television was becoming common, the major broadcasting networks, like NBC, switched from radio to Television. With the primary market becoming television, FM radio was free to evolve and by the 1990s it was mostly complete. How many popular stations are there today broadcasting in AM?
I love my old radios, if design gets any finer than my 1937 Philco cathedral, I don't want to know about it. It looks great and sounds great too.
Great topic, keep em coming.
Dave