[TowerTalk] Funniest thing I've seen in weeks

[Jim Smith]

Hi Tom,

First of all, I'm very nervous about dipping my toe into the pool where 
the big boys swim, but here goes.

First of all, the MANY that you refer to has now been decremented by 1.  
Thank you.

I'm trying to understand your statement below. 

If the received noise is uniformly distributed in azimuth I would think 
that additional gain, presuming that it comes from a narrower azimuthal 
pattern, would increase the SNR of the desired signal.

If there is a lot of noise from one direction and the increased 
directivity is such that there is now a null in the direction of the big 
noise then the SNR of the desired signal would increase a lot.

Am I on the right track here or totally out to lunch?

73 de Jim Smith   VE7FO

Tom Rauch wrote:

>This is actually pretty important, because MANY people think
>7dB of additional antenna gain improves the receiving and
>transmitting 7dB. The actual receiving change can be
>anything from zero to dozens of dB. If for example you have
>a 15 meter Yagi with 3dB of feedline loss and improve system
>gain 2dB by replacing the feedline, the receive S/N will
>remain the same.
>
>73 Tom
>
>
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