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Crystal Sets

Experiments with a Cats Whisker
(Build your own modern version)




From 1959 an article in
Circuits for Crystal Diodes.



Boys Book of Crystal Sets


Boys Book of Crystal Sets


More Crystal Set Articles.


A Sensitive Crystal Receiver from 1958.

Crystal Radio Set Coils from the 1950's

Throughout the 1950's and 60's the following coils were specified in many articles on crystal sets published in the UK.
The circuits that came with the coils have been built and although both worked I found that the Teletron was slightly better for tuning range.However the Repanco excelled after dark and did have a Longwave winding as well.These are all original items.
Repanco. DRX Crystal set coil Repanco DRX Coil DRX Crystal set circuit DRX Circuit Layout
Teletron HX Coil Closeup of Teletron HX Coil Teletron HX Crystal set circuit

The Teletron and Repanco coils in use.

Repanco Coil in Circuit End View of the Repanco Coil circuit
The pictures above show the Repanco Crystal Receiver Coil in circuit the components are as follows: a single pole switch to change the waveband, Diode 1N34, 500pf Dilecon Variable Capacitor and of course the coil. The photographs show the crystal set driving a transistor amplifier with very good results. During daylight Virgin Radio was the dominant station but after dark many European stations were evident.
Teletron Coil in Circuit Another view of the Teletron Coil
The pictures above show the Teletron Crystal Receiver Coil in circuit the components are as follows: Diode 1N34, 500pf Dilecon Variable Capacitor and of course the coil. The photographs show the crystal set driving a transistor amplifier with very good results. During daylight Virgin Radio was the dominant station, after dark European stations were evident but not as many as the Repanco. However this coil only has one winding for medium waves.




Crystal Radio Circuits and Parts. A US site that does Homemade Valve Radios as well.

Birmingham Alabama Crystal Radio Group. A US site with excellent crystal radio projects.

Old Radio World. Lots of circuits,History and Parts.     


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Last updated 3.3.2010



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