At 9:41 AM -0800 12/30/97, henry gillow-wiles wrote:
>the inverted v was the best compromise i came up with, the wire running 90
>and 270 degrees. this should have given me major lobes at 90 and 270
>degrees, right? i was able to take one leg off, connect the shield to the
>tower and turn it into a 1/4 wave end fed sloper with the leg at about 220
>degrees. this should give me lobes at 220 and 40 degrees.
>however, the s/n ratio went down and the sensitivity also.
[ENTER UNDERSTATEMENT MODE]
I am no antenna expert...
[EXIT UNDERSTATEMENT MODE]
but from what I've read in some of the standard antenna texts, quarter-wave
slopers are notoriously difficult to match. I also believe by going to a
quarter-wave, you now become much more dependent on a good ground/radial
system then you were with the V which is essentially a dipole.
>all things being equal, which antenna has more directivity and which has,
>by design, a greater s/n ratio?
I will leave that question to folks who really know what they are talking
about! :)
73, Dick
--
Dick Flanagan W6OLD CFII Minden, Nevada DM09db (South of Reno)
Visit http://www.qsl.net/w7di/
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