[Thursday] The NEWSM in 1972

[Ken Carr]

This is a great magazine issue!At least three useful and interesting articles.
And regarding crystal radios, I did finallyget my crystal radio to work. It is actuallya loose coupler that has a crystal detectorattached. I substituted a diode for the crystal.It was touch and go, literally. Tomorrow I hope to take it apart and clean up all contacts.Then I will look for a selection of crystal types topurchase. I want to make this one flameproof.I am using antique headphones of a particular brand thatwere known to be better than the rest.
Photo links to Flickr are below:
Early Crystal Radio 

  
|  
|   
|   
|   |    |

   |

  |
|  
|    |  
Early Crystal Radio
 
This crystal radio was probably made from a kit and I would date it as mid to late 1920s. The smaller coil slides in and out on the rails while the outer coil has a sliding tap. To the far right you can see the cats whisker and galena crystal. H
  |   |

  |

  |

  
Loose Coupler as Crystal Radio 
  
|  
|   
|   
|   |    |

   |

  |
|  
|    |  
Loose Coupler as Crystal Radio
 
I am preparing for a presentation about radio that I will be giving to our local AACA car club. So, I had to get this one going again. It is a loose coupler with a crystal detector attached to one end (far right). The earphones are Baldwins. The wire
  |   |

  |

  |

  
https://flic.kr/p/CeZ14G 

f-stop Experiment ; Radio and Photography 
  
|  
|   
|   
|   |    |

   |

  |
|  
|    |  
f-stop Experiment ; Radio and Photography
 
While awaiting delivery of a new camera I am testing out a few ideas with my old one (broken LCD screen). The item on top is a loose coupler modified into a crystal radio. Below is a Crosley TRF with regeneration, and to the left is a Kodak dark room
  |   |

  |

  |

  


Sent from Yahoo Mail for iPad


On Sunday, July 31, 2022, 8:20 PM, Michael Thompson via Thursday <thursday at newsm.org> wrote:

This was just sent to me by one of the volunteers at the Computer Museum.Take a look at page 18.There is also an article on crystal radios on page 27.

-- 
Michael Thompson_______________________________________________
Thursday mailing list
Thursday at newsm.org
http://newsm.org/mailman/listinfo/thursday_newsm.org



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://newsm.org/pipermail/thursday_newsm.org/attachments/20220801/6cbc0171/attachment-0001.html>