Many of us tried the old “Two tin cans connected by a string” experiment as kids. [Michael Rainey, AA1TJ] never quite forgot it. Back in 2009, he built “El Silbo”, a ham radio transmitter powered ...
In this day and age, there are countless methods of communication, but let's not leave radios in the past. Although smartphones offer similar functions, radios are still a trusted form of ...
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