40 meter

Linear-Loaded Inverted V  ^pop - How do you fit a full length 160 meter antenna into a 40 foot deep yard?

Coaxial-Cable Trap Dipole  ^{updated  pop} - An Attic Coaxial-Cable trap dipole for 10, 15, 20, 30, 40, and 80 meters

Vertical antenna for 40 and 80m - Homebrew a vertical antenna for 40 and 80 meters band based on popular HF2V model by DL7JV

Delta-Loop for 40 Meters - Two-element Parasitic Delta-Loop Array for 40 Meters by WB3HUZ

80 meters wire antenna  ^pop - A reduced-size 80-meter antenna designed for small lots, portable use, and a fine companion for QRP

40 Meter Parasitic Delta Loop  ^pop - 40 Meter 2 element full size parasitic delta loop wire beam construction and switchable

Multi Turn Magnetic Loop for 40/60/80 - The 40/60/80 is a portable loop that covers 80 meters with a high degree of compromise

NB6Zep Antenna and more - A modified EDZep for 20 meters, Yagi, Zepp Beam, Dual Dipole, Space Restricted 80 meter wires. Operating Bands: 40 thru 10 meters with tuner

80Mt rotating Quad - 2el 40Ft front to back spacing 80 meters Quad antenna

160 meter sloper antenna - The 160-meter sloper system at K3LR

Half-sloper antenna for 40-80 - K9CZB QST article about sloper antenna project for 40 and 80 meters band

80 & 40 Meters vertical antenna  ^pop - May work on 160 meters too, by EI7BA

Vertical wide band 7-21 Mhz  ^pop - The RXO unitenna pdf file a vertical antenna for 40 to 15 meters band

Short Dipoles  ^pop - Short dipoles and verticals for 160 80 and 40 meters

8Q7TB Maldives - 5 June 2010 till 25 June 2010 PF4T will be QRV on 40 and 20 meter bands

Triple H Net - Amateur Radio's late night net on 40 meters

Low band monitor - The Low Band Monitor Newsletter is dedicated to the 40 - 80 and 160 Meter DXer.

1721 Hf Roundtable Group On 40 Meters! Priority listing - The 1721 HF Roundtable Group meets nightly on 7.261 + - QRM. Just a big ham radio family. Informal QSO'S in a rountable fashion.

WebSDR in USA W4MQ  ^pop - Internet Remote Base WebSDR radio receive from Reston, Virginia with remote control cover 160 40 and 20 meters band

CUBEX - Quad Antennas by CUBEX, Cubex currently offers Cubical Quad antennas for 2 meters through 40 meters.

408 MHz Survey - Survey of galactic synchrotron radiation at 408 MHz in the south of England using a 10 metre dish and a Dicke radiometer

3905 Century Club RTTY Net - The RTTY Net is one of several Nets run by the 3905 Century Club. There are SSB Nets on 160, 75, and 40 Meters and CW Nets on 80 and 40 Meters

40 meter 100 watt Transmitter - 40 meter transmitter by K9GDT

IK3OIL Ham radio homebrewing - A site devoted to Amateur Radio Homebrewing, CW-decoder, CW QRP Transceiver for the 40 & 20 meters band, CMOS reader

40 meter CW/SSB Receiver - The K9GDT 40m receiver