Maybe Mike at M2 wasn't so wrong when he said that a 4 element on a
gain-optimized boom had about as much gain as one could realistically obtain
.2 and .25 spacing of a 20m 4 element array gives boom lengths of around 40
and 50 feet respectively.
The same spacings for a 20m 6 element array gives booms of 66 and 82 feet.
Since 60 feet is about the largest boom usually used, could it be that the
6 element monsters aren't really giving enough extra gain to justify the
significant mechanical problems that go with them?
I sure would like to see someone actually verify the 10 or 11 dbd gain
claims for some of these big monobanders.
Best regards and 73s,
Frank - W0ECS
>On 6/13/97 9:57 AM, Charles H. Harpole at email@example.com
>>Physics still says, I think, that more elements, properly placed, equal
>>more gain. Could I, and physics, be wrong? K4VUD
>The NBS (now NIST) studies of a couple of decades ago decisively showed
>that the BOOM LENGTH was the primary factor in determining yagi gain, and
>that the number of elements had surprisingly little to do with it.
>(Although there were some very interesting exceptions)
>Bill Coleman, AA4LR, PP-ASEL Mail: firstname.lastname@example.org
>Quote: "Not in a thousand years will man ever fly!"
> -- Wilbur Wright, 1901
>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
>Administrative requests: towertalk-REQUEST@contesting.com
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Administrative requests: towertalk-REQUEST@contesting.com