MediaTech: TV/Radio Tech (Basics): How Radio Works (W7-P2) Fa16

Before talking about how radio works, it is first helpful to understand the electromagnetic spectrum.  What is the electromagnetic spectrum?




Now, how does radio fit into this?  What does it have to do with the spectrum?  The following video provides a good overview.




Now some detail from decades ago. While the specific tech shown is from decades ago, the basic principles still apply today. Spot the steps in signal processing?




For a quick summary on how radio works, see this quick video below.  What new pieces of info are added here?





Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

HistMedia: Radio Technologist: de Forest, Armstrong & Sarnoff (W11-P2) Fa15

We continue with our coverage of early communication technologists.  We now turn specifically to radio technologists.

Filmmaker, Ken Burns, told the story of radio in his documentary "Empire of the Air."  Notice the story is not as much about the technology as it is about the people (the innovators).

In the documentary, Burns highlights the lives and work of Lee de Forest, Edwin Armstrong and David Sarnoff.  (Note: We have previously covered de Forest.)

Below is a short YouTube clip on de Forest's audion.

Note: PBS provides a good, but incomplete, timeline for the documentary (see only the "Empire" timeline).



Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.

MediaTech: TV/Radio Tech (Basics): How Radio Works (W7-P2) Fa15

Before talking about how radio works, it is first helpful to understand the electromagnetic spectrum.  What is the electromagnetic spectrum?




Now, how does radio fit into this?  What does it have to do with the spectrum?  The following video provides a good overview.



Now some detail from decades ago. While the specific tech shown is from decades ago, the basic principles still apply today. Spot the steps in signal processing?



For a quick summary on how radio works, see this quick vid.





Share this post with others. See the Twitter, Facebook and other buttons below.
Please follow, add, friend or subscribe to help support this blog.
See more about me at my web site WilliamHartPhD.com.