Gray-Hoverman GH10n with NARODs for UHF/VHF-hi


This antenna is the last model of the series. As the smaller models the UHF gain curve on this model is nicely flat, with a minimum of 14.3 and an average of 14.65 dBi. The VHF-hi curves are almost identical.

This antenna is the result of running the nec.opt script. The wire is 1/4 inch diameter 6061-T6 aluminum.
The command I used was:

python -m nec.opt -s(470,13,19) -t(15.5,15.5) -s(174,6,8) -t(8.0,8.0)
-F "max(max_swr_diff, .9*ave_max_gain_diff+.1*ave_gain_diff)" --de-np=100

The two and three narod reflector models were optimized as an upgrade.



  • Model
  • Horizontal Pattern

The charts and the 3D model are interactive. Position the cursor over a dot or a segment for info. View the model/pattern in full screen for print.


The nec model can be downloaded from here: GH10n, GH10n2, GH10n3, GH10

All Gray-Hoverman designs are covered by GPL v3 or later as stated here.



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Copyright 2010 Nikolay Mladenov.
nikolay dot mladenov at gmail dot com