40 metre

Trapped dipole for 40-80-160 meters  ^pop - Build a space efficient trapped dipole antenna for 40-80-160 meter bands using RG-58 and PVC pipe by W8NX

Vertical antenna for 160 meter - This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian

VK5AH -HF 4 Bander dipole  ^pop - 80 - 40 - 20 - 15 meters dipole antenna

K4TX Delta Loop for 40 Meters - 40 Meter 2 Element Parasitic Delta Loop

Shorty Forty Antenna - Short dipole antenna for 40 meter ham band. Can be put up in the space required for a 20 meter dipole.

Sterba Curtain Antenna for 40 meters - A forty meters band sterba curtain antenna notes by KB8PGW

40 meter delta loop - M0MCX - Pictures and details of a wire delta loop antenna for 40 meters band

40 meter shortened dipole - M0MCX - Interesting little project with a couple of loading coils by M0MCX

40-80 Half-Extended Double Zepp Antenna - A dual-bander for 80M and 40m. An Extended Double Zepp (EDZ) is a 5/4 wavelength center-fed dipole. This article will introduce the Half-Extended Double Zepp (HEDZ) which has characteristics that a lot of amateur radio operators should find quite interesting

40m/80m Portable antenna  ^pop - Portable antenna for 40 and 80 meter

Antenna for 40 / 80 meters - A dipole antenna that can be used in 40 and 80 meter band in portuguese

Morgain Antenna for 40/80 - Simple and cheap antenna for 40/80 meter band

N4JTE Antennas Priority listing - Just Too Easy 40 meter reversible quads in two an three element version

YLRADIO - Full wave delta loop - This Delta Loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees. Recommended height is 40 feet or more at highest point, but higher is better.

A Full Wave Loop for 80 - 10 Metres - VE3HCR article of a home made loop antenna for 80 meters band

De EH DipooleAntenne - EH Antennas, and some PDF file with plans to build an eh antenna, Calculate eh, 20 40 80 meters bands

End fed halfwave antenna and matching unit - One is an EFHWA for 20-40 meters, and the other is a matching unit for the antenna by n0lx

J-Pole antennas for 2m-40m - A multiband jpole antenna

EC2APU multiband wire antenna - Wire antenna for 10-15-20-40-80 meters band, with many drawings and description in spanish

P40E CQ WW CW - 2002 CQ WW CW antennas and shack

KD4MZM Beacon system - The kd4mzm ham radio beacon system running a Cobra 148 GTL 40 channel AM/SSB unit modified to the 10 meter band

RF Amplifiers - Solid State and TWT Amplifiers From 1 MHz to 40 GHz with Power Levels from .1 mil Watt to 2.5 Kw

GS Manufacturing - HF Mobile and maritime antennas for 40-80-160 meters

G3YXM 500 W PA - 40-80-160 meter band linear amplifier

SUPERVOX - S 300 - AM CW SSB linear amplifier for 160 80 and 40 meter band