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Thread: CB Radio
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January 27th, 2012, 07:50 PM #25
Re: CB Radio
Cool. You probably know this already, but if not... diskcones have really low gain numbers. Like, almost unity. An RF amp will help offset line loss if it's a long run back to your radio (details).
Radio Shack sells a generic diskcone (product link), but like most it runs out of gas below 6M (50 MHz) and is a tad fragile. The upshot: easy to assemble, can pack into a tubular container and cheap. I'd have a look at more professional models (Diamond Discone D-130J comes to mind) since Rat Shack's has a SO-239 connector, which is a dead-giveaway they haven't a clue (or care about) return loss. The D-130 (product link) comes factory fitted with an N connector, which is *much* better suited to shorter wavelengths. The irony: there's $40 difference in price.
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