[TowerTalk] yagi f/b and rx s/n

[Stan Stockton]

Barry,

In my opinion there is little possibility that you can improve on the beverages you already have using a 2 element Yagi for 20, 15 and 10.  You will be very lucky to achieve more than 15 dB of front to rear with a 2 element Yagi on one of those bands and with a fixed boom length and may not get close to that on the other two bands regardless of how much gain you give up.  And there is not a lot to give up since you can't get much more than something like 4 dB over a dipole with a 2 element Yagi.

Stan, K5GO




Sent from my iPad

On Jan 13, 2013, at 5:08 AM, Barry N1EU <n1eu.barry at gmail.com> wrote:

> I need to come up with some dimensions for 2-element yagis for 20-10M.
> I wish to maximize ability to hear weak signals.  Does that mean
> optimizing f/b ratio, rather than gain?  This will be assembled from
> SteppIR components that I have on hand, so dimensions can be optimized
> for each frequency once a boom length is chosen.
> 
> Thanks & 73,
> Barry N1EU
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