May 2020
Intermediate to advanced
262 pages
6h 48m
English
Content preview from Hands-On Edge Analytics with Azure IoT
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High frequency
The high frequency band sits between 3 MHz and 30 MHz with wavelengths of 100 m and 10 m respectively. A prominent application using the HF range is CB, or Citizen's Band, a radio that operates with 40 channels near the 27 MHz frequency. The popularity of CB radio peaked in the late 1970s to the early 1980s in what could be described as a pre-internet version of chat room talk:
Many users of CB radio take advantage of a phenomenon known as skip to achieve long-distance communications with their transceivers. Skip occurs when radio signals skip off of the ionosphere, a layer of the upper atmosphere that is electrically charged, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.