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A 2-way remotely operated HF antenna switch, based on an idea supplied by G3YEU

VHF Optimized Yagi Antenna for the 6-meter band (50 Mhz) by ON6MU

Amateur Television (ATV) operations, particularly within the Arizona region, require dedicated resources for technical information, operational guidance, and community engagement. This club provides a focal point for hams interested in transmitting and receiving video signals on amateur bands. Members engage in local ATV repeaters, participate in technical discussions, and share knowledge on video modulation schemes, antenna designs, and station configurations. The club supports activities ranging from local simplex contacts to wider area repeater usage, fostering skill development in this specialized mode. The organization maintains a roster of club officers and offers membership opportunities to local amateurs. It also curates offsite links to other ATV resources, expanding the knowledge base available to its members and the broader amateur community. The club's emphasis on ATV helps propagate interest and technical expertise in a mode that combines traditional RF engineering with video technology.

Tombone VHF antenna for 146 MHz ad designed by YB8EIP

Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap

Great pages about KB1SG rhombic antennas collected by EI8IC.

A very simple Eh antenna for 11 meter, drawings in english and italian.

The Fan dipole antenna offer a easy to setup and efficient HF multiband antenna that does not require tuners or antenna switches, diagram by YC8PVU.

An analysis of the cebik dipole and other small limited space dipoles fed with open wire ladder line.

Build yourself a postage stamp 40 meter wire dipole antenna that fits in a space a little over 20 wide and works reasonably well at low heights

Also known as Magnetic Loop Antennas, by AA5TB. Excellent article on construction tips and tecniques of a Small Loop antenna

A very compact receive antenna made with ferrite bars by PA0FBK

Rhombic antenna for shortwave radio broadcasting, general description and radiation patterns

K6SGH introduce the hamloop antenna L7 series

Ham Radio 20 / 40 meter short Coax Trap dipole antenna designed with the coax trap design calculator program

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.

A multiband antenna that can work from 80 to 10 meters in this illustrated docuemnt by G8ODE

A simple antenna that can be erected very fast, only need one center support, and do not take up much storage room. Works from 40 to 10 meters band

This is an attempt to build an Antenna rotator controller using Arduino Mega 2560 with a nice user interface showing the actual position of the antenna.

Presents a comprehensive guide for constructing a broadband Hex Beam antenna, a popular directional array for HF operation. This design offers a compact footprint and excellent gain characteristics, making it suitable for limited space installations while providing significant performance advantages over omnidirectional antennas. The resource details the specific dimensions for a five-band Hex Beam covering 20, 17, 15, 12, 10, and 6 meters, emphasizing the critical element spacing and wire lengths required for proper resonance and pattern. It outlines the construction of the center post, spreaders, and wire elements, along with the feed point assembly, ensuring proper impedance matching. The project aims for a forward gain of approximately **5.5 dBi** on most bands, with a front-to-back ratio often exceeding _20 dB_. Building this antenna requires careful measurement and assembly, but the resulting performance provides a substantial upgrade for DXing and contesting.

The W1TAG LF Receiving Loop is a specialized antenna project for LF reception, designed to mitigate local noise and enhance weak signal pickup on the lower frequencies. This square loop, measuring 6 feet per side, utilizes 14 turns of #12 THHN wire wound on a PVC frame, offering a robust mechanical structure. The design incorporates a series-tuned circuit with a coupling transformer, allowing for tuning from over 400 kHz down to _45 kHz_ using a switched capacitor bank. Construction details include the use of 1.5-inch PVC pipe for the frame, with specific measurements for spreaders and drilled holes for wire threading. The two 7-turn sections of wire are connected at the center, providing an option for a center tap. The loop rotates on a 1-inch steel pipe, enabling directional nulling of noise sources. The tuning unit, housed in a box clamped to the PVC, employs a 1:2 step-up transformer wound on an _FT-82-77 core_ and uses relays to switch capacitance values from 50 pF to 6400 pF, providing precise frequency adjustment. The current setup connects to the shack via 100 feet of RG-58, feeding into a W1VD-designed preamp, with plans for a balanced, shielded twisted pair cable upgrade.

Engaging in **QRP** operations, where amateur radio transceivers transmit at five watts or less, presents a unique challenge and satisfaction for many radio amateurs. This mode emphasizes efficient antenna systems, keen operating skills, and often, the art of **homebrewing** equipment to maximize performance under power constraints. Operators frequently utilize CW (Morse code) for its superior signal-to-noise ratio, enabling reliable contacts over long distances with minimal power. The VK QRP Club, formally known as the CW Operators' QRP Club Inc., serves as a focal point for Australian amateurs passionate about these low-power pursuits. The club fosters a community where members can share insights on antenna design, circuit construction, and operating techniques specific to QRP. It provides resources such as information on club nets and frequencies, Morse practice materials, and a platform for exchanging ideas among enthusiasts. Membership offers access to a network of like-minded individuals, promoting the continued development and enjoyment of QRP within the amateur radio hobby. The club's activities encourage experimentation and skill refinement, vital aspects of successful low-power communication.

Hexagonal wire beams for all hf bands, technical resource, EZNEC files, tools for antenna modeling and documentation. You can also order parts to build your own antenna.

This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.

7.5 MHz wideband audio delivered via AMC-7 satellite transponder 5 provides a robust platform for disseminating amateur radio news. This service caters to operators seeking timely updates on regulations, technology, and DX news. The bulletin is accessible in both MP3 and RealAudio formats, ensuring compatibility with a wide range of devices and listening preferences. Regularly updated content keeps amateur radio enthusiasts informed about the latest developments in the hobby. The service covers a broad spectrum of topics, including contesting, digital modes, and antenna technology. By leveraging satellite and internet distribution, it reaches a global audience, making it a vital resource for operators worldwide. Listeners can expect a consistent flow of information, with new episodes released frequently. The service's commitment to providing high-quality content ensures that amateur radio operators remain well-informed and engaged with the community.

A 40 80 dipole antenna design by WA6ESC PDF File

3 Band vertical Marconi-antenna for the bands 40, 80, 160 meters with a ground net of wires as radials.

Lot's of antenna planning software mainly in dos version by G4FGQ.

optimum short-wave antennas, developed by hams for hams

MARS, Israel's Antenna and RF System manufacturer, flat antennas for cellular, military broadband, multiband MF high power antenna

6x2 coaxial remote antenna switch, completed unit showing weatherproof relay box and station control unit.

By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex

A multi-band inverted-V dipole for portable operation by GM3VLB

The concept of the "Hula Loop" came after many years of building medium wave loops of varying size, shape and performance. Usually these loops are constructed on a square wooden frame, with wire being wrapped around the periphery

A shortened dipole for 40 meters band by Martin E. Meserve

A 2.4 GHz WiFi antenna that can boost your WiFi signals for many miles. It\'s an easy to build Yagi antenna project done with some popsicle sticks, paper clips and glue.

J-Pole Antenna by K4TAX

A marriage of the windom and slinky antennas, experimental home brew antenna by NC4TC

Located in France, DXBeam designs and manufactures a range of monoband, dual band and triband antennas, rotary dipoles, Moxons and Yagis

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

Antennas and homebrew ancilliary equipment

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.

An inverted V antenna for 40-80 with loading coils. This antenna is a full size on 40 and a shortened 80 by KG0ZZ.

Custom built amateur radio adjustable antennas and accessories. Screwdriver antennas, antenna controllers

A simple, cheap, efficient tv antenna that you can make yourself.

A 5/8 vertical groundplane antenna for 50 mhz

20m 2-element light-weight Yagi antenna

The only existing 11 meter club located in the state of West Virginia. Offers great radio, antenna, and general radio information.

The Contesters Choice

30/17/12 and 20/15/10-Meter Tribanders and a 40 meters inverted V wire yagi antenna