October 26th 06, 09:22 PM
posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jul 2006
Posts: 1,614
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Hf Antenna Question - so what's the conclusion?
Cecil Moore wrote:
wrote:
8 turns loose wound in a 6.625" diameter bundle looks like an effective
single band balun for 80m (approx 500 ohms).
This would only be true for a resonant coax-fed 1/2WL
dipole. What about all the other possible configurations?
A ladder-line fed dipole might present an impedance of
8000 ohms to the choke. A 500 ohm choke would have
very little effect. However, a self-resonant choke
might have 40K ohms of choking impedance and it
would need to have a lot more turns than 8.
--
73, Cecil, http://www.qsl.net/w5dxp
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