A look at the radio spectrum

Someone e-mailed this today to a list I’m on. It is a bit simplified, but this chart is meant to introduce people to the concept of electromagnetic radiation. Click on it to get a slightly larger version of the chart.

EM Spectrum

UPDATE 12/8/12:

Here’s another from Fred, W8ZLK:


  1. Dave, N8SBE says:

    I guess it would be OK, if it wasn’t riddled with technical inaccuracies. Ham radio, for instance, is not limited to less than 3 MHz, nor is it primarily there. There are plenty of others, but that one jumped out at me, of course.

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