Lowering takeoff angle.
Regarding the other part, I've stated it as clearly as I can about three
times now. If you disagree or can't follow the point, I don't think
anything else I might say will change that.
73,
Dave AB7E
On 7/13/2016 12:03 PM, Wes Stewart wrote:
Ok, but I'm unclear about what "improves radiation pattern" means. To
paraphrase your other premise, "I'm not sure if it does or doesn't but
if it does, I'm sure it's big" has me wondering. But I wonder about a
lot of things...
On 7/13/2016 10:38 AM, David Gilbert wrote:
No, I didn't mean that.
If sloping ground improves radiation pattern, it's going to be worth
more than 1 db. Pattern changes of any sort typically have
significant effect, whereas one db is almost trivial (notwithstanding
my own experiments on that on my website). I'm not saying that
sloping ground actually has a significant effect ... only that if it
has any effect at all it is likely to be greater than 1 db.
Dave AB7E
On 7/13/2016 10:06 AM, Wes Stewart wrote:
I hope you meant much less than 1 dB.
On 7/13/2016 1:49 AM, David Gilbert wrote:
Agree on the coax losses, but totally disagree on both of your
other comments:
1. Elevated radials will ONLY help reduce near field ground losses
... they will do nothing to help radiation pattern. The effects of
ground conductivity determine far field pattern (given a particular
profile) no matter what kind of radials he uses.
2. If there is any gain benefit from the terrain profile at all,
it will be much more than 1 db.
Dave AB7E
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