The gain figures I quoted are in dBi also. I said dB without thinking.
It makes no sense to uses anything else but dBi. DB has no meaning
unless a reference is quoted. Now it is your turn to check your
settings. What ground conductivity and dielectric constants did you
use? I used .005 s/m and diel const=13, which is average heavy clay
(typical soil). I'll bet you used something close to that of salt water.
Jerry, K4SAV
k4sb at bellsouth.net wrote:
>Jerry Montgomery wrote:
>
>
>>Your apex-up 40 meter triangle data doesn't sound correct. Thats a
>>vertically polarized antenna, and something as simple as this should
>>not have that much gain.
>>
>>So I also modeled it. I got a 7 MHz resonance point with impedance of
>>160+j0.6. Very close to what you got. However, the max gain is only
>>1.1 dB and occurs at a take-off angle of 23 degrees. This is close to
>>that of a vertical, which is approximately what it is. The only way
>>you can get 6 dB of gain out of this antenna is to put it over sea > water.
>>Jerry, K4SAV
>>
>>
>----------
>Unless I made a typing error, I did NOT specify the gain in db. It was
>in dbi. Check your settings in EZNEC.
>
>73
>Ed
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