[time-nuts] Aerial coax downlead placement

[Poul-Henning Kamp]

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In message <28F942E8-B61D-4FA5-929D-923184828FC1 at n1k.org>, Bob kb8tq writes:

>Energy flow is indeed inside the cable if things are set up and operating correctly.

Please note in this context that *nothing* about lightning strikes
works the way you would assume it does.

Cables run inside steel tubes protect the steel tube from lightning
current because copper is a better conductor than steel - in
particular when the leading flank is measured in kV/uS and the
current in kA.

Likewise, a 90 degree bend or a loop on the cable is a huge
inductance to get all that high frequency energy through, so 
lightning tend to jump from bends and loops, to less inductive
paths if possible

Be careful with EMI/EMC clam-on ferrites, they can explode in
lightning strikes.

-- 
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