[TowerTalk] 1 dB difference

[Alex Malyava]

2 more things:
- there are two different "1 dB": one of them is a difference between
S9 and s9+1dB which is unnoticable; another one is 1 dB above or below
noise... you either hear the DX station (+1dB) or not with -1dB.
- any antenna, beside the +1db front gain, has a radiation angle...
you cannot compare gains without angles.


On 5/15/07, Rick Karlquist <richard at karlquist.com> wrote:
> dpease at adams.net wrote:
> > snip
> >>
> >> A difference of only 1 db is all but unnoticeable. It would take a
> >> very careful side-by-side comparison to see the difference.
> >> Bill W6WRT
>
> Even if 1 dB by itself is unnoticable, the sum of multiple
> 1 dB improvements will be noticable.  Thus if you pick up
> ~1 dB by using a legal limit (1500W) amplifier instead of
> 1200W, and a ~half dB of reduced feedline loss, and ~1.5 dB
> of additional antenna gain, and ~1 dB of reduced ground loss,
> etc, eventually you are talking about 3 to 6 dB which will
> make a difference.  This is why competitive stations worry
> individual dB's.
>
> Rick N6RK
>
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