40 Meter Stacked Array - K7EM

80m & 40m DUAL BAND 2 EL SHORT BOOM YAGI - VE6WZ

Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters NU3E A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF operation on the 10, 15, 20, 30, 40, and 80 meter amateur bands at a QTH with restrictive covenants that prohibit outside antennas.

QST article - 4 band vertical, 25' for 80m, 40m, 15m, and 10m bands.

GM4JMU SHORTENED DIPOLE 40m

K5UA - 40m horizontal phased array and personal site.

K6IF/W6BDN 40 Meter Rotatable Dipole - a rotatable dipole project that can be built from new parts in less than a day for around $100.

K9AY RX Loop for low bands

Magnetic Loop Antenna for 20m, 30m, 40m by G4FON

The NB6Zep antenna is a simple inexpensive wire antenna, easy to build, that will yield excellent results on all bands. NB6Zep will operate on all ham bands 40-10 meters (including the WARC bands) with no strain on the antenna tuner, transmission line or operator.