![]() ![]() (It will also probably work with other low-MHz crystals from your junkbox, but it won’t necessarily be legal.) , of the Soldersmoke Podcast, has been a passionate advocate of the Mighty Mite, suggesting that it can be made by scrounging the 3.57954 MHz colorburst crystal from an old analog TV set, which tunes the radio to a legal frequency for ham radio operators. One transistor, capacitor, crystal and inductor in the form of a bunch of wire wrapped around a pill bottle form a minimalist oscillator, and then by keying this on and off with a switch, you’re sending Morse code. (That’s the beer can with tape and alligator clips that you see on the left.)Ī Mighty Mite is barely a radio at all. If you’re getting started building your own ham radio gear, it’s hard to imagine a more low-tech transmitter than the Mighty Mite, but took it one step further and rolled his own variable capacitor.
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