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INTRODUCTION
If you're stuck inside on a Saturday afternoon with a junk box
full of electronic parts and nothing much to do, you can spend an
hour or so...
find out more!
HOW CRYSTAL EARPHONES WORK
Crystal radios are, at best, a compromise when it comes to tuning
(selectivity) and volume (sensitivity) - there are a number of reasons
for this...
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AERIALS AND EARTH WIRES
A good Aerial wire should be as long and as high as possible.
In reality though, there will often be constraints on what you can
do...
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THE NIC NAC CRYSTAL RADIO
Radio signals are travelling through the atmosphere all the
time. This simple radio receiver has been designed to capture them,
and turn them into sound waves...
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THE MK484 TRF RECEIVER
This adaption of the famous ZN414 (now MK484 plastic pack) AM
radio receiver...
find out more!
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