Re(3): [Antennas] High Take-off Angle of 1/4 wave Vertical??

Thu Mar 24 10:53:41 EST 2005

Dave,
I feel you are still confused about what a radial ground system does. A 
good ground (radial) system will improve a vertical antenna's efficiency 
but it will NOT change the takeoff angle.
Using NEC, if I model a ground mounted 1/4-wavelength vertical with four 
buried radials and compare it to the same antenna with 120 buried radials I 
will see an improvement in the antenna's gain but the take off angle for 
ether antenna will be the same providing the ground specifications remain 
the same.
73,
Danny, K6MHE
>Thanks Danny,...
>>I hear what you are saying... "a poor location!"....
>>Now, further, what I am wondering is if poor
>practical/technical/electrical grounding in the mobile/portable situation
>would not mimic the effect of "a poor location!" on take-off angle. ??
>>What do you think?
>>That is, you know, like the equivalent of adding a high resistance or
>something at the ground leg of the vertical antenna. Would that also tend
>to cause a higher take-off angle?
>>Anyone else?
>>David