[Elecraft] 80 Meter Verticals

[Wes Stewart]

Now that I provided the succinct answer, allow me to provide an in-depth answer.

But rather than me doing it, I will take the easy way out and simply provide a 
link to the fine explanation done by Tom, W8JI:

https://www.w8ji.com/radiation_resistance.htm

Wes  N7WS


On 3/1/2017 7:27 AM, Wes Stewart wrote:
> No truth at all.
>
> On 3/1/2017 6:25 AM, Charlie T, K3ICH wrote:
>> Is there any truth in the theory of making the vertical radiator out of 
>> multiple wires such as ladder line and even adding a third wire woven through 
>> the ladder sections and fed on one wire?  The physical result is three 
>> parallel wires but electrically connected so as to form and "up, down and up 
>> again" element.   This supposedly raises the radiating element impedance 
>> relative to the fixed ground loss resistance. The idea I'm told, is that 
>> since the ground resistance (loss) is fixed at whatever it is but as the 
>> actual radiating element impedance is raised, the antenna becomes more 
>> efficient since the ground loss percentage of the overall feed point 
>> impedance is lowered.  This impedance change happens in much the same way as 
>> a folded dipole feed is a higher impedance than a conventional dipole using a 
>> single wires.
>> I saw this written up a few years ago as a means of increasing the overall 
>> efficiency of an inverted L for either 160 of 80 M.
>>
>> I had an "L" made of the smaller ladder line on 160 with only four ¼λ radials 
>> on the ground that seemed to work fairly well. My plan was to install 
>> elevated radials, but that would have been a LOT of wire around the yard.  
>> Something broke on it after a year or so, and I never re-installed it.
>>
>> 73, Charlie k3ICH