[ARC5] Impedance of an end-fed short aerial/antenna

[Mike Hanz]

How soon we forget... :-)

http://aafradio.org/docs/Aircraft_Antenna_Design.html

Note the right hand configuration in the charts.

On 1/31/2013 5:37 PM, Leslie Smith wrote:
> I'm interested in the load impedance of "off-resonant" end fed wires.
> So - for example if I have a 35 foot length of wire trailing out the
> back of an aircraft, what complex "Z" will that present to the 1625's in
> the PA at, say 3.550 MHz.   What it the wire is 55 feet long?
>
> Anyway, in the past I found a page that made that calculation - not for
> an aircraft, but for an end fed random wire.  The calclulation allowed
> for a good many parameters, eg the dia of the wire (1mm, 2.5mm etc),
> height of the wire above ground and even soil type.  The calculation
> result gave the impdedance as resistive and reactive components.
>
> Any pointers, clever types?
>
> 73 de VK2-land
>
>
> Les
>