Linked dipole designer

Design a linked dipole, in inverted-Vee format, tuned for up to six amateur HF bands. This antenna is easy to build and to erect, needs just a single central support, and bands can be quickly changed by opening or closing links between the elements in the antenna.  Read more...

Antenna sections
No. of bands:
Section #1 (inner) : kHz ( highest f )
Section #2: kHz
Section #3: kHz
Section #4: kHz
Section #5: kHz
Section #6: kHz ( lowest f )
Antenna wire
Wire core: mm diameter
Antenna supports
Center support height: m
End support height: m
Rope extender: m
Antenna overview
  Antenna sections
#2 #3 #4 #5 #6
Freq. (kHz)
Length (m)
Total (m)
½ Length:   ½ Apex:   End height:   
Press the "Show antenna" button to display your antenna
configuration here in interactive 3D graphics mode
Antenna feed-point:

Antenna performance

Here you can generate plots of radiation patterns, VSWR chart, antenna currents diagram and Smith chart for your antenna over a choice of ground types. By changing the physical dimensions of the antenna, and refreshing these plots, you can learn a lot about how such antennas will perform in the field.
Please note that radiation patterns are here modelled over flat ground - when the antenna is erected on a hill-top or mountain summit, the surrounding sloping ground will generally cause angles in the elevation radiation pattern to be lowered in the direction of the slope: the steeper the slope, the lower the effective elevation take-off angle will be, and the better the chances of making long-distance contacts.

Choose antenna section:
Check harmonics?: kHz?
Choose ground type of
land in the vicinity
of the antenna:
   Conductivity: S/m    Dielectric const.: F/m
View radiation patterns:    Set elevation angle for azimuth plot:  °    ?

View VSWR chart:
Impedance curves scales:   
View currents diagram
View Smith chart:
Antenna gains
at 0° elevation:
Antenna impedance:
Frequency range: