The best thing I've built
Wehttamman asks: My dad and I once built a go-kart from chipboard, pram wheels and an engine from a lawn mower. It didn't work... so tell us about your favourite things you've made, and whether they were a triumph or complete failure.
( , Thu 11 Oct 2012, 12:00)
Wehttamman asks: My dad and I once built a go-kart from chipboard, pram wheels and an engine from a lawn mower. It didn't work... so tell us about your favourite things you've made, and whether they were a triumph or complete failure.
( , Thu 11 Oct 2012, 12:00)
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If it's not resonant...
... it'll radiate pretty well along its length. So if you're within about 20-30m of the wire you'll have a good strong signal.
If you want to go any distance you want the aerial to be resonant. There's a whole bunch of stuff that involves fiddly stuff with Maxwell's equations that explains all this, but I'm not in the mood for maths.
( , Sat 13 Oct 2012, 15:34, 1 reply)
... it'll radiate pretty well along its length. So if you're within about 20-30m of the wire you'll have a good strong signal.
If you want to go any distance you want the aerial to be resonant. There's a whole bunch of stuff that involves fiddly stuff with Maxwell's equations that explains all this, but I'm not in the mood for maths.
( , Sat 13 Oct 2012, 15:34, 1 reply)
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