Re: 80-40 dipoles

To all concerned,
        Losing the address may be a blessing in that we all would not get
to see the answer unless it was posted. Maybe we need to change the
procedure.

Bill Vail

On Wed, 8 Nov 1995 cebik_at_UTKVX.UTCC.UTK.EDU wrote:

> Pete,
>
> Sorry I managed to lose your address in the space of an hour.
>
> The problem you note in connecting two Vees or dipoles is part of the
> program, and appears regardless of tapering. However, there is a cure.
>
> At the center of your model, place a 2-segment wire and feed its center.
> Then, conntect your wires to the ends of this new wire, an 80 and a 40
> meter piece to each end. If you taper your wires (ordinarily an optional
> procedure with your model), then you can make the new center wire
> segments equal the shortest segments at the center. Otherwise, make the
> length of the center wire segments fall within the
> ratio-of-joining-segments rules for MININEC. This may mean using more
> segments per half-wavelength than usual for the wires. You will find that
> you can derive quite accurate results for both frequencies from the single
> feedpoint. Moreover, it reflects to some degree actual multi-dipole
> construction, which often uses a wide insulator, with the elements
> connected mechanically to the ends and a single wire from each end to the
> feedpoint.
>
> Hope this helps.
>
> -73-
> LB, W4RNL
>
> I apologize to the list for losing Pete's address.
>
>
>
>
>
Received on Wed Nov 08 1995 - 22:58:00 EST