The Double Doublet Antenna for 80 and 40 Meters

40m dipole antenna : Dipole antenna projects for the 40 meter band

Traps for 40 / 80 meter band Dipole or inverted V tuned as a pair

The Radio Room - AJ8MH's Notebook Series - Horizontal and Vertical Doublets (Dipoles) Plus the Inverted-L ]

W3dzz 80m/40m (34m/1kw) at Radioworld UK

80/40/(15) Multi band dipole Antenna kit, incl. 150 Watt 1:1 BalUn - HF kits

80/75/40-meter antenna for Field Day - 0x9900

A simple broadband dipole for 80 meters

The Double Doublet Antenna for 80 and 40 Meters

Multi-Band Inverted-V

Ham Radio: 40 Metre Dipole In A Small Space

20m 1/2-size dipole