| The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...
| The use of CW (morse) on a high-power transmitter/receiver presents a serious risk of burned antenna (coax) relay contacts or destruction o...
| In limited bandwidth circuits, any periodic or repeated waveform can more easily be made with square waves; the reason is that from a clo...
| This article looks at instruments and methods that can be used by both harn operators and shortwave listeners to get the most out of an an...
| This article looks at several options that exist for the distribution of satellite TV signals in small networks. Also, in the face of the f...
| It is widely believed that electromagnetic fields can affect biological systems, including man, although the evidence remains equivocal. Qu...
| Welcome to this new two-monthly column in which we will be covering the fascinating hobby of long-distance TV reception, or DX-TV, as it...
| The instrument described in this three-part article is one you can not afford to give a miss since it is very likely the most advanced fre...
| The type NH -02 humidily sensor from Figaro consists of a capacitive humidity sensor, Zg, in series with a thermistor, Zt on an aluminium...
| Although lhe properties of the LM317 regulator are excellent, they can be improved by cascading two of these devices. There is then a co...
| With the aid of a few components a standard relay can be made to change state every time a pulse is applied (or a switch is pressed).