| To: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
|---|---|
| Subject: | Re: [TenTec] OT: Openwire/Window Line and Bad Wx |
| From: | Robert Arenella <rja12@comcast.net> |
| Reply-to: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
| Date: | Tue, 30 Jul 2013 09:01:51 -0400 |
| List-post: | <mailto:tentec@contesting.com> |
On 7/29/2013 11:31 PM, Richards wrote: > A second question is what lightning protection devices are preferred > for securing open transmission line? > > =============== K8JHR ================ I'm not sure what is "preferred", but what I use is a large DPDT knife switch, one side to the tuner, the other position to ground. Although I don't use one, there is always the ever-popular dual spark gap as shown in the old (and maybe newer?) Handbooks. Finally, for static mitigation there is the high value resistor from each open wire conductor to ground. 73, Carter K8VT _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec Another option is to use a pair of plate chokes from each half of the feedline to ground. I have a friend up in NH using this setup. Keeps the antenna & feedline DC grounded. Lightning isn't his big problem, static electricity generated by blowing snow was creating havoc at his station. The chokes solved the problem. 73 de bob, N2OAM |
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