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#13
October 28th 06, 11:13 PM
posted to rec.radio.amateur.antenna
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Hf Antenna Question - so what's the conclusion?
Ian White GM3SEK wrote:
Ours spell "litre" differently but I guess they're the same - 95mm or 3.75in diameter? If plastic bottles from the USA are a different size, Our 2L bottles are very close to 4 inches in diameter with about 6 inches of effective winding length. They are very popular here for these kinds of chokes. I just put 20 turns on one. The GDO says parallel resonance is 14 MHz and series resonance is 28 MHz. 20 turns on 20m on a 2L pop bottle is what my rule-of-thumb says. -- 73, Cecil http://www.w5dxp.com |
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