Burkhard Kainka (226)

1-07-2005 | Superregenerative receivers are characterised by their high sensitivity. The purpose of this experiment is to determine whether they are als...

1-07-2005 | If you insist on using a valve radio and listening to medium-wave stations, you have a problem: the existing broadcasters have only a limite...

1-07-2005 | Is it possible to make a short-wave regenerative valve receiver so stable that it is even suitable for DRM? And is it possible to do this us...

1-07-2005 | The dip meter consists of a tunable RF oscillator whose resonant circuit is held in the vicinity of a resonant circuit to be checked. If the...

1-07-2005 | This receiver arose from the desire to demonstrate that valves are fully capable of holding their own against modern semiconductor devices....

1-07-2005 | You occasionally see advertising signs in shops with a blinking LED that seems to blink forever while operating from a single battery cell....

1-07-2005 | This short-wave converter, which doesn’t have a single coil requiring alignment, is intended to enable simple medium-wave receivers to be us...

1-07-2005 | This hybrid DRM receiver with a single valve and a single transistor features good large-signal stability. The EP95 (US equivalent: 6AK5) ac...

1-06-2005 | The debate concerning the possible harmful effects of electrical and magnetic alternating fields in our environment goes on. The only thing...

1-03-2005 | The right crystal controlled frequency at the right time: With this DIP outline oscillator there’s no need to wait for a special crystal to...