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This contributor finds it easiest to understand the following explanation.
Fasten your seat-belt; it may be a bumpy ride:
The basic principle to keep in mind is this:
When you pass more than one frequency through any non-linear device, the frequencies
get "mixed". What comes out the other end is the original frequencies PLUS the sum-
frequency and the difference-frequency of every possible combination of the original ones.
Remember this.
A non-linear device can be anything that conducts current better in one direction
than it does in the other direction. Like a semiconductor diode. Or a sharp-pointed
wire touching some varieties of naturally-occuring minerals, which are called "crystals"
when they're used in simple hobby radio kits.
Start at the radio transmitter:
-- The transmitter generates a "carrier" wave, at the frequency where it'll show up
on your radio dial.
-- The carrier wave and the voice or music waves are passed through some non-linear
device, where the frequencies get mixed.
-- What comes out is the (carrier frequency alone), (music frequency alone), sum of the
(carrier + music) frequencies, difference of the (carrier - music) frequencies.
-- The transmitter sends out the narrow cluster of (carrier alone), (carrier + music), and
(carrier - music) frequencies. The (music frequency alone) is filtered out and discarded.
Now go to the crystal radio:
-- The wire antenna catches some of the radio waves as they fly by, and conducts them
down to the "radio" set.
-- Flowing down the wire are separate signals at different frequencies. There
are the (carrier frequency alone), the sum (carrier + music) frequency, and the
difference (carrier - music) frequency.
-- All of them are sent through the "crystal", where the frequencies mix. The original
frequencies come out, along with the sum and difference of each pair.
-- Out from the crystal come these frequencies:
The originals: (carrier alone), (carrier + music), (carrier - music)
The sums: (carrier + carrier + music), (carrier + carrier - music), (2 x carrier)
The differences:
(carrier - carrier - music) = -music
(carrier - carrier + music) = music <==== ! ! !
(carrier + music - carrier + music) = 2 x music
Almost hidden in this pile of many electrical signals is one that's a copy of the original
music signal ... exactly what came from the microphone back at the studio, and got
mixed with the carrier for transmission.
All of the other signals that come out of the crystal are filtered out and discarded,
and just the "music" signal alone goes to the headphones ... "for your listening
and dancing pleasure", as they used to say in the days when the crystal radio was
about the best that everyone had.
What else can I help you with?
How does a foxhole radio work?
If i remember correctly it uses the graphite in a pencil as a crystal similar to that of other crystal radios.
Pokemon crystal it says i have the radio card but it doesn't show up in the pokegear?
If you have the car, the radio is stored in your pokegear. To access the radio, go to pokegear under the start menu. Press the right directional button to find the radio in the pokegear.
What year did heathkit havt the cr1 crystal radio?
My father built some of the early Heathkits. He made me a CR1 crystal radio as well. That would have been in the mid 1960's.
Was the crystal radio the first radio invented?
It was certainly the first kind of radio receiver to become popular with the average person during radio's formative years, although whether it is what all the inventors used is doubtful. We do know that in the first several years of commercial broadcasting (1920-22), if you wanted a radio receiver, you generally had to build your own. The crystal detector was the easiest set to build, and it received a signal fairly well. Crystal sets became very popular in that era before tubes, and before there were a lot of stations on the air. Crystal sets were not sophisticated, but they got the job done until something better came along.
Will your sirious radio work in the Philippines?
The radio will work fine, but there will be nothing to hear.
What are the basic components of a crystal radio?
crystal and crystal Edit: Ignoring the above nonsense... there is a comprehensive article on Wikipedia (see related link) detailing the components of a crystal radio - and how they work.
Where do you get radio on crystal version?
At the Radio Tower.
How does a batteryless radio work?
A batteryless radio can work with a power cord, or it can work by a solar cell, it mostly though operates by a handcrank. In MIT they are trying to figure out how to power a radio with FM radio signals. Works everywhere with radio signals which is everywhere!
Your radio card wont work on Pokemon crystal?
Yes it does! But during the point of the game were Team Rocket has taken over the radio tower, all you wil hear on your radio is static.
How much radio stations can a crystal radio have?
1
How does a foxhole radio work?
If i remember correctly it uses the graphite in a pencil as a crystal similar to that of other crystal radios.
How do you get the radio to work on Pokemon crystal after you have the expasion card?
If you mean for the snorlax, if you have the card, walk up to the snorlax, play the pokeflute channel, and it should work
Why do you have no channels on radio in Pokemon Crystal?
You must obtain a radio card from the receptionist at the radio tower
How many types of radio's are there?
3 types 1 foxhole radio 2 crystal radio 3 transistor radio
What was the term for the radio the 1900?
wireless crystal set
How do you use the radio in crystal?
its easy turn on the pokegear
Where can you buy ceramic earphones?
You can use it for a crystal radio
