Shielded cat-5 works great. Don't short the ends of the shields together, that would be a shorted turn. Use enough of the "turns" so the capacitor can be small value... like 100PF. An Arco 304 works well and of course is tunable. http://home.windstream.net/enginr > You can make your own loop easily enough. Take a 10 foot piece of conduit and