| This 455-kHz quadrature detector for narrow-band FM signals boasts two important advantages: it is pleasantly simple and it does not require...
Gert Baars (67)
| Not all AM receivers are created equal. The receiver described here is definitely not a run-of-the-mill type. The tuning range is not limite...
| This super-simple dimmer consists of only two components, and it can easily be built into a mains switch. If you do this, don’t forget to fi...
| Short-wave listeners who like to travel a lot have a particular need for an aerial that provides a bit more gain than a standard whip aerial...
| Effects units are and remain popular, especially with pop musicians. These units, phasers, clippers, flangers, and so on are used to make a...
| The tiny medium-wave (MW) receiver described in this article is an ideal construction project to while away the dreariness of a rainy winter...
| If you have a general coverage shortwave receiver available and would like to extend its frequency range with the two-metre amateur radio ba...
| There’s nothing better than a long-wire antenna for shortwave reception, but not everyone has the necessary space. The active loop antenna d...
| The design described in this article is one of those with immediate appeal. It is easy to build, very compact, and offers exceedingly...
| A variable power supply is described that in spite of its simple design has two clear benefits. In the first place, it is built from d...