Thread: Coils, why?
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Old December 4th 07, 04:36 AM posted to rec.radio.amateur.antenna
Richard Harrison Richard Harrison is offline
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First recorded activity by RadioBanter: Jul 2006
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Default Coils, why?

John Smith wrote:
"However, how much "Q" is there in a straight wire radiator?"

That`s easy. Arnold B. Bailey has already done all the work for us in
"Antennas and Other Receiving Antennas", but it depends on how fat the
wire is.

For a thin-wire dipole, the 3 dB down bandwidth is 34%, so
F2-F1/Fo=0.34. For Bailey`s 200 MHz antenna, BW = F/Q and Q = 200/68=
2.94.

Best Regards, Richard Harrison, KB5WZI