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A compact antenna contender for 160 meters.

Electronic circuit and components layout fot this VHF Preamp

The G5RV antenna, a popular multi-band wire antenna, typically employs a center-fed design with a specific length of 300-ohm or 450-ohm open-wire line acting as an impedance transformer, feeding a coaxial cable run to the shack. Its overall length for 80-10 meters is approximately 102 feet (31 meters) for the flat-top section, with a 34-foot (10.36 meter) matching section. The original design by Louis Varney, G5RV, aimed for efficient operation on 14 MHz (20 meters) as a 3-half-wave antenna, with the matching section providing a good match to 50-ohm coax on that band. While the G5RV offers multi-band capability, its performance varies across bands, often requiring an antenna tuner for optimal SWR on bands other than 20 meters. The matching section's length is critical for its impedance transformation properties, influencing the feedpoint impedance presented to the coaxial cable. Variations like the G5RV Junior and ZS6BKW utilize different flat-top and matching section lengths to optimize performance for specific band sets or to achieve a lower SWR without a tuner on certain bands, demonstrating the adaptability of the basic G5RV concept.

For two purposes a Cross-Yagi can be useful Satellite work or if you need both vertical and horizontal polarization for terrestrial contacts

160m T Antenna broadcast design by Guglielmo Marconi has been built and is used by Jim NN4AA on 160m. Article by G7LRR

Homebrewed jpole antenna for 50 mhz by IW0BZD, include pictures and schematics, in italian.

Yo5ofh j-pole antenna plans for 2 and 6 meters

A 40m through 20m QRO End Fed Half Wave Antenna Coupler by Steve Yates - AA5TB

pictures of a 80 mt band EH antenna by YC5NBX

An experimental fractal Quad antenna for 10 meter band project by AG1LE

The Chameleon V1 HF Multiband Antenna is a mobile antenna that can also be used as portable. Lightweight mil whip antenna system with 10 BANDS capability 6m, 10m, 12m, 15m, 17m, 20m, 30m, 40m, 60m & 80m.

A simple drawing of a shortened antenna for 40 meters by using a PVC tube

How to extend your Wireless Network by building a 2.4 gHz wifi cantenna

Horizontal HF 6-Band turning arranging emitter with 2 elements Maria Maluca

Homebrew with CF300 DGMF with about .24 dBD gain

Video construction of a multiband HF trapped dipole antenna based on a variation of the classic W3DZZ design

Adalet wireless document on antenna basics in a four pages pdf file

by Chris, G3WOS - July 1992 Six News

Animated quad and yagi comparison. You can see antennas' characteristics behavior in a vertical plane with changing of the height.

An easy to build antenna for ground reception of NOAA weather or amateur satellite signals. Double cross antenna by Gerald Martes

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

Learn basic theory on antennas, and notes on homebrewing efficient shortwave antennas

Overview, summary, tutorial about the dipole antenna or dipole aerial that is widely used on its own and as the basis for other antenna designs.

The Double Bazooka Dipole is a half wave dipole with an attempt at compensation of the reactance change that occurs around resonance for a half wave dipole.

Notes on homebrewing antennas by Chris G4CYA, from gamma matching, to phasing antennas, splitters and combiners, baluns and measuring techniques.

This isn’t a set of step-by-step instructions, but my info might give you some ideas for building your own antenna support.

Nagara Japanese ham radio antenna manufacturer

Testing and comparison of traps and trap antennas

This 2 meter 3 element cubical quad antenna is small, light weight and portable. A backpack antenna that is easy to put together in just minutes and parts store inside the boom making it ready for travel or storage.

21 mhz half wave ant -very low radiation angle - full size and light weight- all coax matching system - decoupling care to prevent low angle radiation degrade

An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band by K5GP

A 70 cm and 2 m arrow-like antenna by DF8GH

A 40 ft vertical dipole antenna that can cover HF Bands from 80 to 10 meters winding a dipole in a 12m HD telescoping fiberglass pole

The Charles Gizmotchy high performance horizontal and vertical beam antennas. Two, Six, Ten and eleven meters antennas

An article on TX and RX antennae for the low bands 80 and 160m by EI7BA

An Antenna Rotator Project. The rotor design is based on sandwiching the gears and gear supports between two 5/16 inch 6061 T-6 aluminum plates

This Arduino project decode ICOM CAT frequency information and switch antennas according to preset values. RX and TX antennas can even be different, a project by ON7EQ

The Screwdriver Antenna Memory (SAM) product is designed to enhance the mobile antenna commonly called the "Screw Driver". It replaces your current control unit and provides an automated memory feature that eliminates the visual coil tuning method commonly used.

A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive

An EH Antenna for 10 meters by Lloyd Butler VK5BR

This is a 70cm big wheel antenna which is used at DB0FAI beacon

What You Should Know About Lightning Protection by Joseph H. Reisert

Collection of article and posts on beverage antennas

A 144 MHz dipole antenna made from coax, PVC pipe, and aluminum foil tape

Members only articles on HF mobile antennas, includes an interesting RV antenna with a 5 bands coverage, and another similar antenna for camper.

Homebrew a vertical antenna for 40 and 80 meters band based on popular HF2V model by DL7JV

A quarter-wave vertical antenna design for HF operation offers a practical solution for radio amateurs seeking a compact and efficient multi-band radiator. This project details the construction of a 5-band HF vertical, drawing inspiration from established commercial products such as the _DX COMMANDER_ and the MV6. The design emphasizes ease of assembly and disassembly, making it suitable for portable operations or installations with limited space. The article provides insights into various construction methods and offers practical tips for building a robust yet lightweight antenna. It highlights the benefits of a vertical configuration for DX contacts, particularly on the lower HF bands, and discusses real-world performance observations. The antenna is designed to cover multiple HF bands, providing versatility for various operating scenarios. Operators can achieve significant DX results with this type of antenna, often comparable to more complex arrays, especially when deployed with an effective ground system. The project aims to empower hams to build a capable antenna without significant financial outlay.

1/2wave vertical antenna for the 6-meterband and a 5/8 ground plane antenna for 50 Mhz

The page describes the construction of a simple omnidirectional, vertically-polarised dipole antenna for two metres using coaxial cable. It can be used indoors or outdoors, with no extravagant gain claims. The project is low-cost and can be completed in about 20 minutes.

An homebrewed dipole antenna for 14MHz