Ham radio allows for the broadcast and reception of non-commercial radio signals across vast distances with relatively inexpensive equipment. As the name implies, ham radio relies on antennas to function, and most designs can take up large amounts of space. An alternative antenna is the magnetic loop design which has a tall circle of copper […]
Ham radio, or amateur radio, is a hobby enjoyed by millions of enthusiasts around the world. The FCC in the US and similar organizations in other countries provide amateur radio licenses that allow hobbyists to communicate on designated radio bands. Most ham radio operators communicate by voice, but ham radios can transmit other kinds of […]
Loop antennas for ham radios use heavy duty variable capacitors for tuning. Since such capacitors need to be physically turned for adjustment, radio enthusiast Jose B.O. made his own remote rig using an Arduino Uno and CNC shield. The CNC setup allows stepper motors to rotate through a range of angles for frequency selection, and […]
Maker Thomas Meston needed a “mysterious looking device” that allows players to enter codes obtained via an original party game. What he came up with is entitled “Dr. Hallard’s Dream Transmission Box,” and consists of an Arduino, a party light, a smoke machine, and other components stuffed into a broken National NC-33 ham radio. This […]
[Leight] posted an interesting use of the LCD Shield by SparkFun as a waterfall visualisation (a.k.a. plotting signal strength and frequency over time). “Cascata” is the Italian for “Waterfall”. Nice one. Cascata is an Arduino Waterfall display program built using the Arduino and the Sparkfun Color LCD Shield. It has a selectable 0-4 kHz or 0-2 kHz […]
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