More about radio (331)

1-06-1998 | The U2514B is an integrated bipolar radio circuit suitable for digital tuning systems. It contains an FM front end with preamplifier a...

1-05-1998 | In the UK, two small sections of the 70-cm band, around 418 MHz and 433 MHz, have been available for some time for licenceexempt wire...

1-04-1998 | The Radio Caroline’s which some of you may fondly remember have been towed ashore and superseded by radio stations not using transmitter...

1-03-1998 | The European Union’s Eureka* 147 DAB Project is the only digital audio broadcasting system to be fully specified and to meet the ITU’s...

1-12-1997 | Judging by the cacaphony emanating from an increasing number of cars on the road, car radio boosters unfonunately remain popular with yo...

1-11-1997 | The circuit shown here will hopefully fill an important gap, so missing, in current DIY electronics. So, leave the computer alone for...

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...