Infrared crystal radio?

In summary, it is not possible to use an antenna to pick up infrared due to its high frequency. It is suggested to use a photoresistor-type infrared detector instead. For a self-powered option, infrared/visible sensitive solar cells are available. However, it is questioned why specifically targeting infrared is necessary.
  • #1
James Kidder
3
0
Can a crystal types radio be made to work in infrared? With an antenna of lead sulfide or lead selenide perhaps?
 
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  • #2
You're not going to have much luck using an antenna to pick up infrared, period. Its frequency is just way too high.

- Warren
 
  • #3
Tell us what you are attempting to do and it is possible we can suggest something else.
 
  • #4
James Kidder said:
Can a crystal types radio be made to work in infrared? With an antenna of lead sulfide or lead selenide perhaps?


You could just use a photoresistor-type infrared detector. They look like LEDs and you can get them from most online electronics stores. You can't use antennas regardless of their composition as antennas are designed for receiving lower frequencies in the microwave and radio range.
 
  • #5
I would like something that would make its own power like a solor cell/laser or radio/crystal radio.
 
  • #6
Once again, what are you trying to accomplish? No one is transmitting anything on infrared radiation.

- Warren
 
  • #7
James Kidder said:
I would like something that would make its own power like a solor cell/laser or radio/crystal radio.


Well there are infrared/visible sensitive solar cells. Why do you want to be able to just capture infrared?
 

1. What is an infrared crystal radio?

An infrared crystal radio is a type of radio receiver that uses infrared light to detect and decode radio signals. It is a passive device that does not require external power to operate.

2. How does an infrared crystal radio work?

The radio consists of a crystal, typically made of semiconductor materials such as germanium or silicon, which acts as a detector of infrared light. When the crystal is exposed to infrared light, it produces a small voltage which is amplified and converted into an audible sound by a small speaker.

3. What are the advantages of using an infrared crystal radio?

One of the main advantages of using an infrared crystal radio is that it does not require any external power source, making it a cost-effective and portable option. It also has a simple design and can be easily built by individuals with basic electronic knowledge.

4. What types of signals can be received with an infrared crystal radio?

An infrared crystal radio can receive a wide range of signals, including AM, FM, and shortwave radio. It can also pick up signals from other wireless devices such as cell phones and Wi-Fi networks.

5. How can I improve the reception of my infrared crystal radio?

To improve the reception of an infrared crystal radio, you can try using a longer antenna or a better quality crystal. You can also experiment with different placement and orientation of the radio and its components to find the best signal. Additionally, using a preamplifier or adding a tuning circuit can also enhance the reception of the radio.

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