Re: [K3] Kite antennas and static protection

Posted by Vic K2VCO on Jun 14, 2010; 2:49pm
URL: http://elecraft.85.s1.nabble.com/K3-Kite-antennas-and-static-protection-tp5174542p5177745.html

On 6/14/2010 3:15 AM, Tom W8JI wrote:
> The most important thing in this is to always have a dc leak path to earth
> on the antenna side of any "T" network or anything else that might add a
> series capacitance. (Some lighting suppressors are a bad design with "dc
> isolation" by a series capacitor on the center conductor.) We never want
> series capacitance that prevents or blocks a bleed-off path to earth.

The popular ICE lightning suppressors do have a DC blocking capacitor, but there is a
toroidal RF choke to ground (with a DC resistance of about half an ohm) on the antenna
side. They also appear to have a drain with a resistance of about 130K on the radio side.
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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