dipole 40m

40 meter double bazooka antenna - A double bazooka antenna plan for the cw portion of the 40 meter band by k0ru

Trapped dipole for 80 and 40 m - 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.

40M Inverted Vee - This simple antenna can be used in various configurations for 40/80/20 or any WARC band or a combination of them

40M Reversible Moxon - W8EGB moxon project, each side is 51 feet long and the turned in sections are each 7.7ft long. This antenna performed similar to a full size two element yagi for 40 meters.

An antenna for 7MHz local contacts - This article describes the design of an antenna for local contacts on 7MHz, including a simple and efficient matching system that presents a 50 ohm load to the transceiver.

Full 1/4 wave vertical for 40m - Pictures and assembling description of a homebrewed vertical antenna for 40 meter band by ON7AMI

Dipole Calculator in JavaScript - Input the desired resonant frequency and it will calculate lenght in inches feet and meters

W4HN Antenna Calculator - Calculate your dipole, 3 element yagi and a simple dipole

Double Bazooka Dipole - The Double Bazooka Dipole is a very efficient antenna which is very quiet,and does not require the use of a balun

Building Coils - Building coils for a portable dipole using a novel method of winding coils with weedeater cord! By K4MMG

Multiband HF antenna - A multiband hf antenna for restricted spaces covering 80 40 20 15 meters Based on the VK2ERG shortened 80M dipole

An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX

Folded dipole antenna basics - Basic information on the folded dipole antenna

Multiband Open Wire Antennas - Why Multi-band Dipoles Need HEAVY Open Wire Line by Tom, K1JJ

Open Wire Feed Line a second look - Put up the longest dipole you can fit, feed it with open wire line, connect it to the balanced output of your tuner and—poof! Instant multiband antenna. Is life really that simple? By Paul Danzer, N1II

Magnetic loop for 40 meters - Mag Loop aerial for 40mtrs. Diameter is 3 Mtrs. Rotator and tuning with pictures.

Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.

The Indoor spiral dipole - An attic indoor antenna successfully implemented by N9RET by using two runs of 2-conductor wire

W4INF Hidden House Loop Antenna - If you live in a restricted subdivision, you need to make the most out of it. This loop antenna is balanced line fed and works 40m-10m, does decent on 80m.

K7FFF Beacon - FISTS Northwest K7FFF Beacon On the air at 28.287 MHz 2W to Dipole

KA0PSE Beacon - On 28.219 Mhz it puts out a whopping 3.85 watts into an inverted V dipole at about 30 ft.

TakTenna - Electrical half-wave dipole antenna

G4IRX/P portable operations - A compact and portable setup with wire dipoles by G4IRX

30m QRSS Beacon Transmitter - This beacon puts out about 0.5W on 10.140MHz. It is intended to be used for Slow Morse (QRSS) operation.

LY1GP software defined radios - TinySDR for 80m band and ZetaSDR for 40m band