Richard Lee
Member
The 1/4 groundplane antenna that I've been using is working pretty well.
http://forum.planefinder.net/threads/1-4-wave-ground-plane.156/
But, I would like to replace it with an antenna with a bit more gain.
Just to see if the coverage can be improved, without going to a large antenna.
I found a small Collinear that looked 'size' suitable, but I have lost the URL!
I did save some the pictures..(See blow).
It looks like something that I would like to try. If I can make it robust enough to not to fall apart.
Because of it's size, relative to the 1/4 wave GP, I assume it will have a bit more gain. (Not sure how much).
It looks like the builder is using a 75 ohm feed point, and I would want to use a 50 ohm feed, with some 1/4" hardline.
Is anyone here familiar with this design? Do the dimensions look like they will work?
Edit: Found the URL! http://www.qsl.net/py4zbz/adsb.htm
http://forum.planefinder.net/threads/1-4-wave-ground-plane.156/
But, I would like to replace it with an antenna with a bit more gain.
Just to see if the coverage can be improved, without going to a large antenna.
I found a small Collinear that looked 'size' suitable, but I have lost the URL!
I did save some the pictures..(See blow).
It looks like something that I would like to try. If I can make it robust enough to not to fall apart.
Because of it's size, relative to the 1/4 wave GP, I assume it will have a bit more gain. (Not sure how much).
It looks like the builder is using a 75 ohm feed point, and I would want to use a 50 ohm feed, with some 1/4" hardline.
Is anyone here familiar with this design? Do the dimensions look like they will work?
Edit: Found the URL! http://www.qsl.net/py4zbz/adsb.htm
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