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Author Topic: Old time Crystal radio  (Read 6567 times)
VE3TRU
Member

Posts: 46




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« on: January 08, 2016, 05:43:52 AM »

I'm trying to build a crystal radio, for some thing fun to do.
Had an idea of combining two sets, tuned to the same frequency, to give me a greater output.
Not sure if its worth the trouble, or even possible. Also maybe there is a trick to doing this that I don't know about. A dual tuning capacitor might work, I have my doubts you could get them to sync that way.
.
Once you power it up with a transistor, its not a crystal radio anymore, its a transistor one. You cant put that ketchup on a steak.
« Last Edit: January 08, 2016, 05:47:35 AM by VE3TRU » Logged
WB2WIK
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Posts: 21588




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« Reply #1 on: January 08, 2016, 09:03:08 AM »

Use high-Z crystal headphones and it should be loud enough.
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ONAIR
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Posts: 2568




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« Reply #2 on: January 09, 2016, 02:29:12 PM »

Yep!  Mine works fine with a crystal ear plug!  If you really want to have some fun, just attach your crystal radio to the input of your stereo system!!  Smiley
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KE0ZU
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Posts: 187




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« Reply #3 on: February 12, 2016, 04:07:55 AM »

Here is another place you might visit.
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N6XJP
Member

Posts: 41




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« Reply #4 on: June 12, 2016, 06:53:51 AM »

A couple of other spots:  www.crystalradio.net and www.midnightscience.net.    Crystal sets are a great way to teach young people how a basic radio works.  Been building them for 65 years.

Dave
N6XJP
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AD4U
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Posts: 2386




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« Reply #5 on: June 12, 2016, 09:15:49 AM »

I get pretty good volume and hear LOTS of stations using my 160M dipole for an antenna. On a typical winter night I can often hear 20 or more AM standard broadcast stations. Using a 1N34 diode for the "crystal" I can tune in shortwave stations all the way up to around 3 MHz.

Dick AD4U
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WA2ONH
Member

Posts: 357




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« Reply #6 on: June 12, 2016, 09:32:59 AM »

Another site for Crystal Radio is...

Dave's Homemade Crystal Radios
http://www.makearadio.com/crystal/index.php

Good Luck!
« Last Edit: June 12, 2016, 01:05:08 PM by WA2ONH » Logged

73 de WA2ONH   ... Charlie
---------------------------------------------------------------------------------
"There is no shame in not knowing; The shame lies in not finding out"
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