Richard Clark wrote:
On 23 Feb 2005 08:11:47 -0800, "Dave" wrote:

Are there any online sources that show vertical whip antenna
take-off
angles vs. antenna length (as a function of wavelength)?

Hi Dave,

Go to:
http://www.eznec.com/
and research to your heart's content with the simple designs (or make
your own).

Done and done... nice program! I'm hoping I entered the correct values
for everything. Do the patterns listed below look correct? I assumed
things like wire diameter (I used 2mm) didn't affect the output
significantly... although I did notice some things like the number of
segments did affect the output if I decreased them (I used 10 for these
cases).

(filename = length in wavelengths):

http://www.geocities.com/achilles03/eighth.gif
http://www.geocities.com/achilles03/quarter.gif
http://www.geocities.com/achilles03/half.gif
http://www.geocities.com/achilles03/5eighths.gif
http://www.geocities.com/achilles03/1wave.gif
http://www.geocities.com/achilles03/1point25wave.gif
http://www.geocities.com/achilles03/2.gif

Do those look correct?

Thanks in advance!
Dave

On 23 Feb 2005 09:53:05 -0800, "Dave" wrote:

Done and done... nice program! I'm hoping I entered the correct values
for everything. Do the patterns listed below look correct?

Hi Dave,

Yes, however, you will notice there is still a cone of silence above
any of these even if the preferred angle is now higher towards a
balloon.

I assumed
things like wire diameter (I used 2mm) didn't affect the output
significantly... although I did notice some things like the number of
segments did affect the output if I decreased them (I used 10 for these
cases).

Not so much that any change will fill in the cone.


73's
Richard Clark, KB7QHC