More about radio (325)

1-09-1997 | With the rebirth of thermionic valves (electron tubes) in audio amplifiers (note that they never 'died' in radio transmitters), it was fei...

1-09-1997 | Almost fifty years ago, Wireless World (now Electronics World) published the design of an audio output amplifier that gave a new dimension t...

1-12-1996 | The article describes a remote control (send/receive) system that does not use infra-red light, but visible light. It is particularly...

1-12-1996 | This circuit ensures that impatient callers or naughty children cannot make an electric doorbell ring continuously. It limits the time t...

1-12-1996 | Model cars, boats and airplanes may go out of control, causing serious danger and damage when a failure occurs in the radio control syst...

1-07-1996 | The monitor is a handy aid in cam and is particularlv suitable for radio amateurs who power their equipment from a car battery.

1-07-1996 | Believe it or not, but it's fashionable ('cool') these days to listen to medium-wave radio stations. Ferranti's ZN416 integrated circuit con...

1-07-1996 | Only a handful of components are needed to build an intrument which is indispensable in any RF workshop: the grid dip meter or 'dipper...

1-06-1996 | Amateur television (ATV) is among the most popular, technically advanced and exciting sub-activities available to the licenced radio am...

1-03-1996 | The Radio Data is now well established among VHF- FM broadcasters aiming at providing additional information with their radio programmes. In...