Dave,
That was a very informative description.  I've never had hands on one 
of them, but now I have a great idea of what they are all about.
Thanks.
Pat, K9JAUAt 02:27 PM 12/18/2014, you wrote:
>Hi Don:=20
>
>             Others may better explain the Alpha Delta DXCC multiband =
>dipole
>antenna better than I, but here=92s my response to your questions. =20
>
>             The DXCC model has 3 dipole insulated wire elements of =
>different
>lengths coming out  of the Alpha Delta center insulator.  On each side =
>of
>the center insulator emerge 3 wires for the various bands covered by =
>this
>antenna.  On each side there is one 41 foot length wire that covers the =
>80
>meter, and 40 meter bands.  The 40 meter length of this wire is utilized =
>for
>15 meters, based on a 1/3 wavelength harmonic.  Aditionally, there is =
>one 16
>and =BD foot wire coming out of each side of the center insulator for =
>the 20
>meter band.  There is also one 8 foot length of wire coming out from =
>each
>side of the center insulator to cover the 10 meter band.  The 10 meter =
>and
>20 meter dipole wires are laced through a mesh like =93grid=94 for =
>lateral
>support, this mesh also connected to the center insulator.  There is,
>therefore, no requirement for the ends of the 10 meter and 20 meter wire
>elements to be supported or tied to a tree or a pole, etc., because they =
>are
>supported in space by the mesh grid.  The two 41 foot wire dipole =
>lengths
>are laced through the upper edge of the mesh grid, and serve as the =
>lateral
>support for the  mesh grid and the 10 and 20 meter wire elements that
>achieve lateral support by being laced through the mesh grid.  Thus, the
>placement of the 41 foot wire elements of the dipole serve to provide a
>similar alignment or direction of the 10 and 20 meter dipole wires as =
>they
>are in parallel, directly below the longer 41 foot wires extending away =
>from
>the center insulator. =20
>
>             My DXCC arrangement works very well on 40 meters and 20 =
>meters,
>not requiring a tuner.  10 meters may or may not require the use of a =
>tuner,
>depending upon frequency chosen.  Same  goes for 15 meters.  This =
>antenna
>(mine, anyway) requires the use of a tuner for 12 and 17 meters...I =
>don=92t
>believe that it was designed for these bands...  But on 75/80 meters, I
>absolutely am required to use an external tuner, and the fine tuning is
>critical to achieve low s w r for me on this band.  Even tiny little
>adjustments of the external tuner on a given frequency in the 75 meter =
>band
>causes s w r to jump.  Others users of this antenna may not have this
>experience on 75/80 meters.  However, one of the 41 foot wire elements =
>of my
>dipole terminates within about 12 feet of the metal roof on my house, =
>which
>may be throwing a fly into the ointment.  I do get good  signal reports =
>on
>75/80 meters as well as 40  and 20 meters, the bands that I most =
>frequent.
>
>
>             I hope that description helps to answer your questions.  =
>This
>missive isn=92t necessarily sent to steer you in one particular =
>direction, but
>rather to describe the structure of the dipole and a bit of my personal
>experience with it. =20
>
>                                                             Regards,=20
>
>                                                                         =
>Dave
>Weigel   KD4JEZ