Tony Hwang <dragon40@shaw.ca> wrote:
>Jeff Liebermann wrote:
>> antennas of roughly the same gain:
>> Type gain -3dB Beamwidth
>> dBI degress
>> patch 13 38
>> yagi 14 30
>> planar 13 25
>> dish 15 19
....

>What is different? Higher gain = more element = narrower beam angle.

But there is also the simple fact that a parabolic dish will
have narrower beamwidth for the same gain, and will have
significantly fewer sidelobes, as a Yagi Uda design.

>Used work in microwave, troposcatter, sattelite comm systems
>when I was young.

Where did you do tropo? That's what I did when I was young.
I did satellite when I was old. And microwave for all of it.

>Talking from experience with plain language. Want to go in
>detail in antenna theory? Then please do via email direct.

Nahhh. Do *not* take it to email. Keep it here, for everyone
now and in the future.

--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@apaflo.com