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| Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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Thread Tools |
4th Oct 2015, 8:44 am
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#1 |
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Pentode
Join Date: Jul 2014
Location: Bangalore, India
Posts: 132
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Another Crystal Radio Variant
A 7" long, 2" diameter PVC pipe doubles as coil former and enclosure for this crystal radio. A couple of white plastic cosmetic jar covers serve as the end caps.
The coil is (280 + 40) turns of 30 SWG enamelled copper wire close-wound as shown. The PVC variable capacitor is mounted on one of the end caps. More details at http://nandustips.blogspot.in/2015/1...o-variant.html Regards, Nandu. |
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4th Oct 2015, 12:56 pm
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#2 |
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Guest
Posts: n/a
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Re: Another Crystal Radio Variant
You can't beat a well wound coil for looks, nice one.
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4th Oct 2015, 1:23 pm
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#3 |
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Octode
Join Date: Jun 2004
Location: Reading/Fakenham, UK.
Posts: 1,323
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Re: Another Crystal Radio Variant
I came up with the idea many moons ago for AM transmitter testing.
Tuning capacitor at one end, headphone jack at the other. Seems there really isn't anything new under the sun! Ian |
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4th Oct 2015, 3:25 pm
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#4 | ||
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Pentode
Join Date: Jul 2014
Location: Bangalore, India
Posts: 132
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Re: Another Crystal Radio Variant
Quote:
Quote:
Great minds thinking alike?! 73, Nandu. |
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