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For me, a very interesting thing is that Forrest Mims designed one
of the monitors, and he refers to a Radio Shack part. I thought
Radio Shack was long gone (like Fawcett Publications, Herbach and
Rademan, J. J. Meshna, and others). It exists:
<a class="moz-txt-link-freetext" href="https://www.radioshack.com/">https://www.radioshack.com/</a><br>
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I also thought Mims was a lot older than he turned out to be:<br>
<a class="moz-txt-link-freetext" href="http://www.forrestmims.org/biography.html">http://www.forrestmims.org/biography.html</a><br>
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That issue of <i>Make </i>also has an article on a shark tracker.
That might suggest some other underwater projects.<br>
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