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#23
August 13th 06, 03:02 PM
posted to rec.radio.amateur.antenna
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Rule of Thumb for coax chokes
"Cecil Moore" wrote Reg Edwards wrote: A coil 6.6" long, 6" diameter, 26.5 turns, has L = 68 uH, Q = 500 at 3.8 MHz, and self-resonant frequency = 9 MHz. Wouldn't mounting the coil four inches above a GMC pickup ground plane reduce the Q and the self-resonant frequency? -- ====================================== Cec, Very likely. But not very much. It would not be the self-resonant frequency any more. The srf never changes. And neither does the intrinsic coil Q. We must be careful with our descriptions. Slackness leads to misunderstandings, arguments and fights. ---- Reg |
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