A Visual Demo of How a Yagi Antenna Works – MAKE Magazine

Diana Eng KC2UHB visually shows how a Yagi Antenna works in a video at MAKE: Magazine

http://blog.makezine.com/archive/2010/02/seeing_radio_waves_with_a_light_bul.html

This is so easy to understand when you can visualize it this way!

Using a low power amateur radio transmitter and a simple light bulb receiver circuit, we see how radio waves and electromagnetic induction transmit energy and signals wirelessly through the air. We also see how dipole and Yagi antennas radiate their energy in different patterns. Read on to build your own dipole receiving antenna!

73

Steve
K9ZW

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4 thoughts on “A Visual Demo of How a Yagi Antenna Works – MAKE Magazine

  1. Don WS4E says:

    Nice example of an improper unidentified transmission there…. :)

  2. k9zw says:

    Or were her IDs either edited out, or programed in a non-voice form?

    Don WS4E does bring up the very valid point to make sure that an experimenter complies with FCC regulations and Good Station Operating practices when experimenting with RF!

    Part 97 : Sec. 97.119 Station Identification does require an ID transmission of a station’s “assigned call sign on its transmitting channel at the end of each communication, and at least every 10 minutes during a communication”….

    Perhaps at a 5:49 minute video she ID’ed after the fade-out, as she was still keyed up? ;)

    Good catch and it would be clearer if she had included IDing, provided she didn’t forget…..

    73

    Steve
    K9ZW

  3. Could have been cool to try a time-lapse exposure and moved the light all around the device in order to recreate a 3D view of the RF around the antenna, but perhaps too much to deal with at the moment. This was a great video!!!

  4. […] may remember Diana KC2UHB from A Visual Demo of How a Yagi Antenna Works – MAKE Magazine […]

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