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Is this a good 7 element colinear omni?
Hello, Group!
I would like to ask anyone with enough experience a question regarding a simple seven element colinear antenna shown below.
As I was browsing the internet in search of that "ultimate" antenna design, I found very few pages with the description of this antenna. All others were much more elaborate and more time consuming to make.
So, I decided to repeat the shown below antenna -- the result is shown on the attached photographs. It took me ten minutes to make:
bent wire on a wooden chuck with pliers,
solder wire it to the end of RG-58 and
mount BNC jack to the other end.
I was amazed with its performance! The antenna was 80%~85% as effective compared to the tested gamma feed yagi with 14dB gain!
Since I don't have any equipment to test this antenna except view the chart on the netstubler, I humbly ask if someone could analyze this antenna and kindly give an intelligent estimate to its parameters.
Here is the ASCII sketch of it in case photos would not upload:
tip 83mm - 5x90mm middle sections - base 61mm - 150mm sleeve soldered at the base
each /\ is an open loop 10.8mm outside diameter
----/\-----/\-----/\------/\-------/\-------/\---[============150mm brass sleeve
Any opinion would be greatly appreciated -- thank you. In one of my posts below I added external links to show pictures in bigger size.
Last edited by alkats : 01-21-2007 at 07:18 AM.
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