The regenerative radio is long-ago superseded in commercial receivers, but it remains a common project for electronics or radio enthusiasts seeking to make a simple receiver. It’s most often seen for ...

A small, simple AM receiver project with only 3 transistors. This circuit can pick up medium wave stations in your area. It can use general purpose transistors, and in this example there are 3 BC109C ...

Here is a VLF receiver tuned to 300 kHz designed to detect the crackle of approaching lightning. A bright lamp flashes in sychrony with the lightning bolts indicating the proximity and intensity of ...

You would think detecting lightning would be easy. Each lightning bolt has a staggering amount of power, and, clearly, you can hear the results on any radio. But it is possible to optimize a simple ...

Early radio receivers and record players nearly always had a knob marked “tone,” which was usually a crude low-pass filter with some form of severity adjustment. At best, these controls could ...

The Marantz NR1403 is a slim, handsome AV receiver with excellent sound and plenty of HDMI connectivity, although it lacks built-in networking. Covering home audio and video, Matthew Moskovciak helps ...