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Old November 8th 14, 07:13 AM posted to rec.radio.amateur.antenna
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Default A short 160M antenna - folded elements

Wayne wrote:


"John S" wrote in message ...


snip

I'll comment, just to see if I'm envisioning his configuration properly.

If a folded dipole is constructed, the feedpoint impedance can be increased
by adding another parallel wire, forming a 3 wire folded dipole. A 5 wire
paralleled folded dipole would have an even higher feedpoint impedance.

So if I envision the configuration correctly, half of a 5 wire folded dipole
is used to construct a 5 wire folded vertical monopole.

The antenna is then shortened (but resonated) by putting a loading coil in
each of the 5 wires.


Yep, that's it.

Total coil losses are lower because only 1/5 of the current flows through
each, giving each a resistance loss of (1/5*I)^2*R.

Is that it?


I would have to go back to the model to see the relation of the central
current to the current in the four legs.

--
Jim Pennino
 
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