[TowerTalk] Coax Lengths for Stacked Yagis
Wes Stewart
wes_n7ws at triconet.org
Fri May 4 00:06:26 EDT 2018
Another point or two and then I'll shut up.
1) The expected phase shift in a line is only achieved when the line is matched.
2) When I was doing EME I, and everyone else I knew of, used equal length lines
everywhere and maintained symmetry, even if it meant some lines had more loss
than necessary.
On 5/3/2018 7:28 PM, Wes Stewart wrote:
> Quarter wavelength lines have the magical property that the output current is
> equal to the input voltage divided by the line Zo. So with multiple inputs
> tied together, and obviously having the same voltage, the output currents will
> be equal.
>
> Wes N7WS
>
> On 5/3/2018 6:09 PM, Richard Smith wrote:
>> What is the benefit of making the feedlines odd multiples of a quarter
>> wavelength long? I have heard this elsewhere, but have not yet figured out
>> the benefit.
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