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Toll_free, if you modeled your Sigma 4 using Exnec would you share that file with me? I'll send you my version of Dxer's model if you email me at edromans@comcast.net.

Dxer, used real wire diameters and taper, including a true circular hoop. I just made a few dimension adjustments and added a base hub where the radials attach at the bottom. Dxer had his radials directly intersecting the bottom part of the radiator. His model also shows little gain, and when I fixed these items the gain improved nicely. My modified model does not show the maximum gain of 5.75 dbi @ 8 degrees that the model Shockwave provided from Henry, but 4.75 dbi @ 7 degrees seems pretty good for me.

I would like someone with Eznec modeling experience to truthfully critic my model.

[QUOTE="Marconi, post: 252618, member: 903"] Toll_free, if you modeled your Sigma 4 using Exnec would you share that file with me? I'll send you my version of Dxer's model if you email me at [EMAIL="edromans@comcast.net"]edromans@comcast.net[/EMAIL]. Dxer, used real wire diameters and taper, including a true circular hoop. I just made a few dimension adjustments and added a base hub where the radials attach at the bottom. Dxer had his radials directly intersecting the bottom part of the radiator. His model also shows little gain, and when I fixed these items the gain improved nicely. My modified model does not show the maximum gain of 5.75 dbi @ 8 degrees that the model Shockwave provided from Henry, but 4.75 dbi @ 7 degrees seems pretty good for me. I would like someone with Eznec modeling experience to truthfully critic my model. [/QUOTE]

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