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#21
December 4th 07, 04:39 AM
posted to rec.radio.amateur.antenna
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Coils, why?
Yuri Blanarovich wrote:
... 73 Yuri, K3BU.us Oh yeah, I trust you are here legally, right? Would hate to call immigration on "another one!" chuckle JS |
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#22
December 4th 07, 05:36 AM
posted to rec.radio.amateur.antenna
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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 |
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#23
December 4th 07, 06:05 AM
posted to rec.radio.amateur.antenna
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Coils, why?
Richard Harrison wrote:
... 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 Thanks Richard, good math! So many won't take the time ... Warm regards, JS |
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#24
December 4th 07, 03:54 PM
posted to rec.radio.amateur.antenna
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Coils, why?
"John Smith" wrote in message ... Yuri Blanarovich wrote: ... 73 Yuri, K3BU.us Oh yeah, I trust you are here legally, right? Would hate to call immigration on "another one!" chuckle JS Your "brilliance" is blinding! I admire Cecil for having patience to engage with such brilliant minds. :-) Time to grow up from diapers? Yuri |
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#25
December 4th 07, 09:17 PM
posted to rec.radio.amateur.antenna
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Coils, why?
Yuri Blanarovich wrote:
... Your "brilliance" is blinding! I admire Cecil for having patience to engage with such brilliant minds. :-) Time to grow up from diapers? Yuri Ahhh, that just felt good ... JS |
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