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| To: | <[email protected]> |
|---|---|
| Subject: | LF: Re: Re: [Lowfer] Protecting E probe antennas in near field of LF TX antennas |
| From: | "Dave Brown" <[email protected]> |
| Date: | Sun, 4 Mar 2007 12:13:10 +1300 |
| Delivered-to: | [email protected] |
| References: | <002101c75b37$1e370680$6401a8c0@JAYTERMINAL> <001701c75b40$54bc2740$6901a8c0@AIRPORTTERMINAL> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Thanks for all the comments on this-Jay and the others.Those of you who have a protective relay in service in an E probe-have you any recommendations to make as regards the mechanical layout? Keeping the stray C to a minimum is obviously the main requirement, along with short ground path when the relay is shorting the E probe input. For maximum protection, isolating the probe antenna seems to also be desirable, which is why I was thinking along the lines of the Dow Key relay arrangement with a double sided spring loaded contact. But I guess any relay that has low stray and intercontact capacitance (contacts open) and reliable grounding via a short path (contacts closed) will do the trick. 73 Dave, ZL3FJ |
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