[R-390] Antenna...folded dipole...

[Marshall M. Dues]

There is an antenna called a Terminated, Tilted, Folded Dipole (T2FD) that has a 
terminating resistor.  You can do a Google search on T2FD antennas and come up 
with a number of sites on this antenna.

For example, see the following web site:

T2FD design -- antenna special on hard-core-dx.com

<http://www.hard-core-dx.com/nordicdx/antenna/wire/t2design.html>

Marshall Dues,  WB5MYO






Kenneth G. Gordon wrote:
> On 15 Dec 2003 at 10:56, Dave Faria wrote:
> 
> 
>>GM list.  I want to build a Folded Dipole antenna for my station.  I
>>can wind the balun but, cannot find a suitable terminating resistor. 
>>Can anyone point me to a source for a non-inductive 400ohm or 800ohm
>>resistor 300 watt??  I can build a combination of resistors to meet
>>the resistance and wattage if necessary.
> 
> 
> No folded dipole I have ever seen in antenna books or other 
> literature, or that I have built, ever needed a terminating 
> resistor. If you plan to use this antenna with an R-390, my 
> understanding is that the R-390's input impedance is already 
> 300 ohms, balanced, and a properly built folded-dipole exhibits 
> 300 ohms impedance, balanced, at the resonant frequency.
> 
> Of course, the folded dipole is resonant only around one 
> frequency or band, so you would have to have several 
> depending on what bands you intend to listen to.
> 
> Terminating resistors are only needed for antennas such as 
> rhombics, Beverages (sp?),  and the like, not for a folded-dipole.
> 
> Ken Gordon W7EKB
> _______________________________________________
>