40M
Antennas for 40 meters band
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Multi-band wire antenna covering 80 to 6 meters with low feed point impedance. -
A reversable quad antenna for 40 meters band by N4JTE -
A bowtie antenna is a type of antenna that reputedly provides higher gain at lower radiation angles than a center-fed dipole antenna at heights considerably less than 1/2 wavelength above ground. -
A double bazooka antenna plan for the cw portion of the 40 meter band -
A Mini Moxon antenna for 40 meters band project in a well done PDF document -
A wire moxon antenna plan for the 7 Mhz -
Bill's HomeBrewed 40 Meter TAK-tenna or TAK Antenna -
The author describes his experience building and using a Beverage antenna for the 40-meter band. Despite encountering some challenges, the antenna offered some improvements in receiving stations compared to a 3-element inverted Vee antenna. The Beverage antenna showed a significant daytime signal-to-noise ratio improvement and received signals better than the Vee antenna. However, the front-to-back ratio was not ideal, and the transmit power seemed to affect the Beverage antenna. Overall, the author concludes that the Beverage antenna might be more suitable for locations with higher noise levels. The total cost of the antenna was around 30 Euros. -
A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information. -
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 -
A moxon antenna project for 40 and 30 meters -
G8ODE antenna project, where the 40m & Short 80m antenna was deployed as a sloping wire antenna using the 10M fibre glass fishing pole and a hook on the house's gutter-board -
The page provides detailed instructions on how to build a double bazooka antenna for the 40 meters band. It includes information on materials needed, measurements, and assembly steps. The antenna can be configured as an extended dipole or an inverted V, offering low noise, wide bandwidth, and a 1:1 standing wave ratio. The content also offers calculations for other bands and includes photos of the antenna fabrication process. -
Moxon antenna 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. -
40 meters elevated vertical antenna array at VA7ST -
On the field comparison among C-Pole antenna, an EFHW vertical antenna and an Inverter V dipole antenna. Test is done using two identical WSPRLite beacons that transmit with 200mW on the WSPR frequency and analyzing spotted results. -
Portable wire antenna for 40 and 80 meter made with a RF Chocke. Can be adapted to work on 160 meters by adding additional 6.9 meters wire at its end. -
A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article. -
This project started as a result of renewed interest in 40 meters coupled with the desire for an antenna system that would be more effective than the simple dipole. -
Modification of the Bill Petlowany, K6NO antenna by N0LX -
The page provides guidance on building a mobile antenna for HF bands using a cheap CB-mobile whip antenna base. It discusses the importance of high efficiency antenna systems with a slim profile for low wind resistance, along with physical constraints and design considerations. The author shares instructions, tips on mounting the antenna, grounding, and band switching. The page includes a graphic illustrating the antenna's principle of operation and a table with reference lengths for different bands. -
A bazooka antenna project for the 7 Mhz, includes dimension for to homebrew your own bazooka for HF bands -
Gary Breed, K9AY experience with beverages on 40 meters -
Build a double bazooka coaxial dipole, broad-band dipole antenna -
One is an EFHWA for 20-40 meters, and the other is a matching unit for the antenna by n0lx -
VK2ZAY end-fed antenna for 40 and 80 meter band -
G5RV 40m Beam Antenna. Adding a 28 ft. piece of vertical wire to one end of a 102 ft. center-fed dipole turns it into a 40m beam with a very wide beamwidth -
How to build a ground plane antenna for the 40 meters band in french -
A modified Hairpin antenna for a wider bandwidth an mounted on a grounded metalic mast -
End-Fed Half-Wave Antenna for the 7 or 10 MHZ amateur bands intended to provide a very simple to erect yet effective portable QRP antenna. -
This is a low cost homebrew two band travel antenna for 20 and 40 meters. It is based on the B&W Travel Antenna concept with a telescoping whip and a loading coil -
Three eh antenna plans for 20 40 meters bands. -
The total length of this antenna is 41m, height is about 11m, and diameter of element is 2mm. JA7KPI modified this antenna originally used as Inverted-V type of 80m band Dipole. Works on 40 - 80 meters band with acceptable swr. -
The intent of this site to share information about the design of a 40 meter horizontal phased array antenna. -
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. -
Simple and cheap antenna for 40/80 meter band in Italian -
Build a 3-element reversible quad antenna for 40 meters. -
Details the construction and performance of the NB6Zep, a modified 20-meter Extended Double Zepp antenna, optimized for 40-10 meters with a tuner. -
The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation. -
WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length -
Explore the innovative Pfeiffer Maltese Quad Antenna System for multiple bands. -
Hexagonal Wire Beams for 40-10m from DL7IO, different mono/multiband designs with building descriptions and model files for EZNEC -
40 and 20 meters mobile antenna -
How to construct a very small but efficient Antenna with PVC Plumbing tube and discarded fruit cans. - Just the thing to fit in a small space such as the house attic -
W1ZY's 40 Meter MOXON is the product of 9 months of experimentation. The final array is reversible and constructed from No. 12 insulated wire fed through two RF current baluns -
Designed and built by W6NL looks like a loaded yagi this 2 element moxon antenna offer 6dbi -
J-Poles with Wireman-cables for the quarterwave matching section, working on VHF and HF bands -
An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band. -
A project for a Moxon antenna for 7 MHz with pictures and EZNEC model -
The page discusses the concept of a 2-element Parasitic Ground Plane antenna for the 40-meter band. It includes a conversation between amateur radio operators discussing modeling results and design considerations for the antenna. The author shares insights on radial configurations and the impact on antenna efficiency and pattern. -
3 Element reversable quad antenna for 40 meters band -
This blog post by VE3VN discusses the design and performance of a 40-meter reversible Moxon antenna. The antenna provides coverage between southeast to west by default, with the ability to reverse for coverage from east to northwest. The post explains how the antenna performs well in various directions, focusing on the Caribbean, South/Central America, the US, and Europe. Detailed measurements and design considerations are shared, highlighting the accuracy of the model and the critical importance of coil inductance. The post also mentions the use of NEC5 for accurate modeling. Overall, this detailed discussion provides valuable insights for ham radio operators looking to optimize their antenna setup. -
A mobile vertical antenna for 40 meters band by W4NFR -
This page describes a comparison study on seven different beam antennas for 40 meters band. Yagi antennas, moxon antennas, mini horse all antennas are described with schema diagram , azimuth plot and SWR F/B Gain diagram -
A helically wound vertical antenna experiment. 14 meter of wire wounded on a 8 meter fishing pole with 4 elevated radials -
This antenna is designed for 40, 80 and 160 meters to complement a tri-band beam normally taken on DX peditions for 10, 15 and 20 meters, so six bands can be worked with only two antennas. -
Results or performance test using an harpin antenna for the 7 MHz -
The author wants a compact, switchable antenna for 40-meter ham radio. They compare 3 designs: rectangle, short-tipped W6NL, and T-hat. All work well electrically, but mechanics matter for a large antenna. The rectangle needs strong support, while the T-hat is sturdier with slightly longer elements. The T-hat design wins for now, but the author will focus on its mechanical details next. -
A 2 element small footprint 40 meter phased, reversible, downsized quad array antenna. -
This antenna is an off-center fed spiral dipole for 40 meters. The spiral dipole is very compact, making it well-suited for limited space (like an apartment patio), while the off-center feed gives the antenna some multiband capability. -
A 5/8 wave antenna, can be fed with ladder line from the center insulator to tuner. -
Setting up a ZZ Wave antenna, a dual band loop antenna covering 80 and 40 meters.