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Primitive radio types

Posted: Wed Jul 04, 2007 10:15 am
by cheapNdisgusting
When I was a kid (back in ancient history) I built a crystal radio in Boy Scouts. This I understand, and there are lots of "kits" available. This is not what I want.

There were always stories around how soldiers in WWII made primitive recievers out of stuff lying around, and POW's making a radio out of practially nothing.

Now that I am retired, I would like to "amaze" my grandkids with something like this. They can have thier Ipods ect. I want to make something easy and off the wall, like using a potato for a power supply and a toilet paper roll with some wire wrapped around it.

Anyone have any sugestions (NO KITS) that may help?

Thanks in advance for any and all input.

Posted: Wed Jul 04, 2007 12:33 pm
by Chris Smith
A good starting point is the primitive crystal radios.

Check out some of the very old diagrams that use one exposed crystal, a ear phone because of the lack of output, and a lemon if you want some power?

You have to touch different parts of the exposed crystal to tune in the device, kind of like poking at the out side of an Air Comb Cap to tune in a channel.

Posted: Wed Jul 04, 2007 1:32 pm
by Janitor Tzap
Heres a site where he has all kinds of ways to make crystal radios. ... radio.html

Signed: Janitor Tzap

Posted: Wed Jul 04, 2007 5:52 pm
by cheapNdisgusting
Thanks for the starters.

Posted: Wed Jul 04, 2007 5:59 pm
by Chris Smith

Your clock setting is WAY out.

You Posted: 05 Jul 2007 09:52 am

Is almost 6:00 pm now.

Add in + 8 hrs for starters in the profile.

Castor is the Latin word for "beaver"

"Bieber" …German word for beaver

Ontario or MO?

Must be going around?

Posted: Wed Jul 04, 2007 6:31 pm
by Ron H
Google "razor blade radio".Here's one with lots of alternate detectors .

Posted: Thu Jul 05, 2007 5:55 am
by Dave Dixon
You might get lucky doing a search on "Foxhole Radio" as well. Best of luck!

Time way off

Posted: Thu Jul 05, 2007 7:14 pm
by cheapNdisgusting
Never paid any attention to it. At my age, the sun is up or it's not. I think it is correct now.

Mo. (you are good)

Thanks to all for all the help. :grin: