To: | "Discussion of Ten-Tec Equipment" <tentec@contesting.com> |
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Subject: | Re: [TenTec] Inexpensive, readily available, light-weight,communications design headphones... mono but easy to make stereo |
From: | "Stuart Rohre" <rohre@arlut.utexas.edu> |
Reply-to: | Discussion of Ten-Tec Equipment <tentec@contesting.com> |
Date: | Fri, 7 Apr 2006 16:21:42 -0500 |
List-post: | <mailto:tentec@contesting.com> |
The leads inside the coiled cord are not often tightly twisted upon each other, and that is what is needed to effectively cancel pick up. The coiled cord may have one conductor that makes a very gentle curve but basically remains near the outer jacket the whole length of the coil cord. It thus acts as a wire antenna to RF. The thickness of the typical coil cord precludes much RF choke action although there might be some inductance to RF. The insulation spacing the turns creates a lot of interwinding capacitance. Stuart K5KVH _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec |
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