Pete (AC7ZL) wrote in to tell us about his latest project: building a flat response microphone and channel amplifier. You may remember his previous project: building a crystal radio from modern junk.
The bizarre rap battle between astrophysicist Neil deGrasse Tyson and hip-hop artist B.o.B over the shape of the Earth now has a mic-drop moment. On Sunday and Monday (Jan. 24 and Jan. 25), B.o.B — ...
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