This is the InnovAntennas 18el 2m/4m dualbander prototype on test at G8FJG. This antenna has 7 elements on 4m and 11 elements on 2m on a 4.5m boom
If you have ever operated any sort of transmitting equipment, you’ve probably heard about matching an antenna to the transmitter and using the right co-ax cable
M0PLT, a member of UKQRM and EURAO, started a Petition on the UK Government and Parliament website asking to amend the law to exempt all licensed Radio Amateurs (and C.B. radio users) from requiring planning permission for their aerials
Efficient Low Band Counterpoise for Restricted Circumstances Loss Avoidance Opportunities and Techniques for the Low Bands
The short and linear FCP was designed to reduce ground losses from inadequate radial systems beneath inverted L and other vertical antennas.
To compliment their range of excellent HF aerials, (I use one, the’re good, they work – G8YPE), M0CVO offers a selection of VHF and UHF antenna. More information on their website [su_button url=”http://www.m0cvoantennas.com/apps/webstore/products/category/1494822?page=1″]M0CVO Webshop[/su_button]
This 4m dipole was designed as a club project for the Phoenix Radio Club to use with a bulk purchase of 4m converted “PMR” radios. No claim is made as to the originality of the basic design- a dipole is a dipole- although the design has been engineered for easy assembly and to give repeatable results.
Antennas/6MThis simple project, based on the orginal CobWebb-Antenna model, is about an horizontally polarized, omi-directional antenna for the six meter band….
Antennas/70cmA 70 cm yagi antenna design by YU7EF includes tables with antenna elements dimension and spacing.
This UHF Yagi antenna plan provides a maximum gain of 17.93….
Antennas/Homebrewing TechniquesWhy build antennas out of copper and not aluminum or stainless steel. Selecting the best metals for antennas evaluating the conductivity factor….
Antennas/SatelliteModified 80cm Offset Dish for 2.4 GHz Satellite Reception. This 50-ohm impedance antenna allows, when connected to 2.4GHz preamplifier and downconverter, to receive Amateur satellites with 2.4GHz transponders such as AO-40….
Antennas/160MAn schema drawing and formula to calculate size of an Inverted L antenna for the 160 meters band, 1.84 MHz….
Antennas/PortableThis article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry….
Antennas/Fan DipoleThere are a large number of antenna designs for HF. One choice out of many is the fan dipole. The ability to transmit of multiple bands without needing a tuner (and even more with a tuner) is a very desirable factor in choosing a versitle antenna for HF….
Manufacturers/Antennas/VHF UHF Microwave/Vertical AntennasHand-tuned, J-Pole Antennas. The James Pole Antenna is constructed of 1/2 inch Type M copper pipe, soldered together and capped on both vertical elements. Each Antenna is tuned for center frequency….
Five best homebrew fan dipole antenna projects easy to build. The fan dipole antenna is a simple wire antenna consisting of multible monoband dipoles sharing a single coax feed line….
Antennas/Fan DipoleThe antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet…
Antennas/Fan DipoleAmateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list, pictures and drawing. Includes the option to expand the antenna to cover the 80 meters band…
Antennas/VHF UHFTape measurement yagi. The longest part is 530 mm, easy fit to your backpack. Very easy and fast deploy. Great for SOTA and portable operation. Can be used in horizontal or vertical polarization. Based on DK7ZB design…
Antennas/LoopConsider installing a stealth vertical loop antenna if you live in a place with no antenna restrictions.
Full wave loop wire antennas allow you to be on the air without installing evidente external aerials….
Antennas/6M/6 meter Yagi AntennasThis 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents….
Antennas/2MA great and efficient monoband VHF portable antenna. The article consist of two version of a 12.5 Ohm 3 elements yagi beam antenna plans for the two meter band, a full sized and a shortened version expecially designed for the SSB and CW on 144 MHz….
Antennas/6M/6 meter Yagi Antennas A six meter band 3 element yagi beam antenna project with shortened elements using coax cables with the outer ends stripped and the center conductor shorted in somewhat of a Bazooka antenna….
Antennas/6M/6 meter Yagi Antennas50MHz Collapsible 2 Element Mini Beam antenna, an overview the development of the 6MBA….
Antennas/WireThe Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally…
Antennas/30MDimensions and EZNEC plots for a 2 Element 30 meter Yagi antenna with 28 Ohm featuring 4.3 dBd Gain and a 16dB F/B with a good bandwidth….
LNR Precision have added a magnetic loop aerial to their list of products, a commercial development of a design by W4OP. This 40m – 10m loop boasts great build quality, remote tuning, a 6m option and a host of accessories
For over 20 years Martin (V51W/V51MW) was improving his Station. After he has tried all possible antenna systems he was convinced that his Rhombic Antennas are best. [su_button url=”https://dxnews.com/video-v55v/”]For the full article[/su_button]
Hi all. I was going to make my own 80mt 1/2 wave centre fed wire dipole but I see I can buy one ready made inc a 1 to 1 balun for less that the bits would cost me. Now my thinking…if I buy an 80mt dipole which is to long for my garden…antenna 4omts…
Antennas/Homebrewing Techniques Article and video showing a technique to straighten Microbore copper pipe that is useful in antenna construction. This technique has been implemented to build a Quadrifiliar Helix antenna. [su_button url=”https://www.dxzone.com/dx32991/how-to-straighten-microbore-copper-tube.html”]For the full article[/su_button]
Hey folks, I would like to start building a dual band antenna for 10 and 6 FM, vertically polarized. The antenna will be up in my barn loft when complete – roommates with a 2 meter halo I just did. Is it possible to do a j-pole (or something else) to cover both bands? Anyone…
Antennas/VHF UHF A home made 23 elements yagi antenna for the 23cm band made on alluminium boom with floating element mounted on a plastic isolators. Includes a table with elements distances and lenght [su_button url=”https://www.dxzone.com/dx32988/yagi-antenna-for-23cm-atv-reception.html”]Full Original Article[/su_button]
A recent article on the popular Hack-a-day website showed readers how to build a very simple ADS-B ‘Cantenna’ to use with their SDR USB dongle radio [su_button url=”http://www.southgatearc.org/news/2018/february/recyclo-cantenna.htm”]Full Original Article[/su_button]