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I've been reading this forum a lot in the past few weeks and I decided to build a double Gray-Hoverman antenna

I will be using the plan for each one from http://www.jedsoft.org/fun/antennas/dtv/gh.html

Question 1

There are 2 units on the plans that I don't know what ther refer to : D & deltaX.

I think deltaX is the distance between the antenna and the reflector, can someone could confirm this ? If it is not, then at what distance should I place it ?

I though "D" was the diameter of the wire, but 6 mm diameter is huge (about 2 or 3 AWG). Does D really refer to the diameter ?

Question 2

I chose GH6 over the GH10 because the reflector seemed much easier to build. But after looking at other people's antenna, most people don't seem to build this kind of reflector and mostly use some king of pre-made mesh. Using animal fence would certainly be much easier. Would that make a big difference ? If I use animal fence, should I choose one with the bigger or small gap ?
 

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Discussion Starter · #3 ·
6mm diameter is about #2 or #3 AWG, that's really huge.

Does it really make a big difference in quality reception or is it just to make the antenna solid enough to stay outside.

I'm planning to place my antenna in the attic, so it won't be exposed to wind or snow.
 

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6mm diameter is about #2 or #3 AWG, that's really huge.
6 mm is 1/4", the most cost effective aluminum rod size at Metal Supermarkets.
Most of JEDs models were optimized for that size, so any deviation will change the gain from the models.

Using animal fence would certainly be much easier. Would that make a big difference ?
JEDs models were optimized for the rod reflectors. They dont work well with the mesh models. If you want to use a mesh reflector, just use the original SBGH gen1.
http://www.digitalhome.ca/forum/showthread.php?t=95898

Post your TVFool. In the attic, you lose anywhere from 6 to 24+ db in gain, depending on roof construction.

Attic antennas can be very simple to build using styrofoam (1st choice) or stiff cardboard backing.

Also, if you have vhf-channels, you would probably want one of the NAROD models from here: (they also require rod reflectors)
http://clients.teksavvy.com/~nickm/gh_n3_uV.html
 
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