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Article on the HF dual band antenna with construction details and how to add 160 meters to the HF2V

40mm diameter grey PVC pipe with a length of 9.5cm

Simple DIY stealth apartment antenna for 20m and 40m. It is basically a ZigZag quarter wave dipole antenna

An homemade portable vertical antenna with a trap near the mid point of the main element. The trap is made with 42mm diameter PVC pipe with 9 turns of wire on it

Experiments with phased wire vertical antennas on 40 meters at VA7ST

A vertical half-moxon for the 7 Mhz by F6IRF

A quarter wave vertical end-fed antenna for the 40 meters band. As all vertical antennas, also this aerial requires a good earthing system. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into.

Gary Breed, K9AY experience with beverages on 40 meters

This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.

A homebrew fishing-rod vertical using a very nice design from EB5EKT. This antenna works 20, 30, and 40M bands by selecting the tap points using alligator clips

A well documented article on a small magnetic loop antenna for the 40 meters band

A shortened 7 MHz Dipole antenna as described by Ken GM4JMU in Sprat 74.

Design for a very low cost 6-digit frequency counter module using of the shelf components

This note looks at the antenna and antenna model for the 40 meter Moxon Yagi designed by Dave Leeson, W6NL. The performance of the antenna, through the model, will be explored in several typical settings.

OM International sideband society incorporated nets 75M, 40M, and 20M Nets begin one hour earlier during Daylight Savings Time

A simple quarter-wave length vertical for 40m band using a 12 m spiderpole

A simple 7 bands off-center dipole wire antenna designed to work on 80 meters band and that can cover also 40m 30m 20m 15m 12m 10m with acceptable SWR

This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands

A simple 40 meter CW transmitter, it sports full break-in operation and 250 mW of output power.

A vertical dipole for the 40 meters band made by using some buddipole parts and adding capacities on both ends by HB9MTN

The Linear-Loaded "Crappie" 40M Rotatable Dipole A Short 40 Antenna You Can Build for $50 or Less by VA7ST VE7ASK

Compact and efficient magnetic loop antenna that cover from 40 to 10 meters project by G8ODE published by RSARS

A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.

A 4 element Wire Yagi antenna design for the 40 meters band

A mobile vertical antenna for 40 meters band by W4NFR

A simple TRAP-dipole project for 20 and 40m bands includes EZNec simulations

Design plan of an array of a two element yagis for 80m and a 3 element 40m antenna sharing a single 12 meters long boom by EA5DY

A junkbox bugstick for 20m, 17m, 15m, 12m, and 10m bonus at the bottom a junkbox bugstick for 40m

Near Vertical Incidence Skywave (NVIS) and the 40 meter Novice Sub-band.

TinySDR for 80m band and ZetaSDR for 40m band

Inverted Vee antenna for 40m with simulation data by DF9CY

DF9CY experience on a vertical antenna for 40 meter band

This 40 meter Inverted V antenna was tested and tuned at a height of 35 feet and proved excellent results. The ends of the antenna are about 11 feet above the ground. Article and video available

A short dipole wire antenna for 40 meters band. It is a folded dipole that do not make use of coils and can be used either in horizontal or inverted V configuration

Shortened vertical antenna for 40 meters band an homebrew project

Practical and usable direct conversion receiver for the 40 m CW band

7N3WVM homebrew project of a 3 W output CW transceiver on 7 MHz band

Raspberry Pi WebSDR Receiver Project running SoftRock Lite ii Receiver (40m) and Raspberry Pi Model B

HB9MTN Capacitive antennas for 40m, 30m AND 20m

This article describes a simple Inverted L antenna for the HF bands designed to work on 80m, 40m, 30m and 20m

The GM4JMU Shortened 7Mhz Dipole

DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.

A bazooka antenna design in German with dimensions for 20m and 40m band with RG174 coax cable stronger than the common RG58

A multiband vertical dipole antenna by ON4BAI

An off centre fed dipole, with 10 feet of vertical radiator. It needs no tuner on 40m, 20m and 10m by M0UKD

Wide bandwidth Trapped Verticals and rotary dipoles, baluns, 40m/80m wire dipoles and accessories from Australia.

Article showing how I've made a mains filter to reduce EMC in the electricity supplying my shack. I've used a type 31 Fair-Rite ferrite core and the video shows how this performs on 160m through to 40m.

The page provides a project for an helical dipole for the 40 meters band, resonating on 7 MHz, created by PY1ZFK based on a design by DL8VO. It includes detailed instructions on building the antenna.

An homemade fan dipole antenna for 20 30 40 meter bands, setup in a 15 meter wide garden. The longest leg for 40 meter is folded to fit in the 7.5 m

An antenna project for a beam antenna for 7 Mhz