[Antennaware] Modelling help needed for160 m L-antenna on 20m
W6SX Hank Garretson
w6sx at arrl.net
Tue Jan 30 11:13:05 EST 2007
At 02:26 AM 29 01 2007, Kari wrote:
>I have a 135 feet L-antenna (70 feet vertical, 65 feet horizontal) for 160
>meters with about 20 ¼ wave radials to it. It works well on 160 m and is
>also resonant with low SWR on 24 Mhz and 28 Mhz. I now wonder how does the
>elevation and azimutal pattern look like on the latter two bands? Is there
>any low angle take offs or is it a cloud warmer on the 24, 28 Mhz band?
>Can anyone help me with the modelling since I am not an expert on this and
>do not have EZNEC 3 or 4. I do happen to have the EZNEC wire model file for
>the L-antenna from ARRL Compendium if that helps.
Try one of the free
NEC/MININEC programs on the WB0DGF page:
I've had good luck with MMANA.
For something like an L, it is pretty easy. You
won't have any problem, and you will have fun playing with it.
Mammoth Lakes, California
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