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Title: QEX Post by: WA1GFZ on December 28, 2006, 11:13:20 PM QEX has an interesting article on cloud burner antennas. Best is a H laying flat 125 feet on the long runs 65 feet apart. I think 1/8 wave high but they had gains for other heights.
Title: Re: QEX Post by: W8EJO on December 29, 2006, 07:45:10 PM A very, very lazy H.
Terry W8EJO Title: Re: QEX Post by: Steve - WB3HUZ on December 29, 2006, 10:19:12 PM I have a similar design in one of my antenna or engineering books. Reminded me of a broadside array that uses the ground as a reflector to make it unidirectional (straight up). IIRC, it was supposed to have 6-8 dB compared to a dipole. One would strap locally using this antenna.
Title: Re: QEX Post by: WA1GFZ on December 30, 2006, 10:37:49 AM Sounds like a similar performance as QEX article claims 12 db iso.
Title: Re: QEX Post by: k4kyv on December 30, 2006, 01:19:18 PM Problem is I don't get QEX.
Title: Re: QEX Post by: K4QE on December 31, 2006, 07:24:37 PM The antenna described is also known as a "Shirley" array. You can read more about them here:
http://www.cebik.com/wire/nvis.html Title: Re: QEX Post by: Ed-VA3ES on January 01, 2007, 10:46:36 AM Problem is I don't get QEX. Don, the only two ham magazines I subscribe to are Electric Radio and QEX. QEX is the state-of-the-art stuff. Indispensible. It bought out Communications Quarterly, it's competition a few years ago. It continues in the role (and legacy of) Ham Radio used to play. |