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Summary, tutorial about the basics of what is a waveguide and the basic waveguide theory.

Antenna gain and directivity explained in this article at radio electronics antenna pages

The main issues with portable HF operations have become not issues of the transmitting and receiving equipment itself but of providing power and antennas

This variation of the basic horizontal, half wavelength flat top dipole has proven to be a simple, effective antenna suitable for both home and portable use.

A presentation on designing Near-Vertical Incidence Skywave (NVIS) antennas and all related EZNEC models in a single zip file or the single presentation in PDF File

Le radioamateurisme,le qrp,l elecraft k2, antennas,qrp,schemas,manuals,nostalgia, meteo,dx clusters hf, and contests links in french

Specializing in an assortment of directional, wideband antennas and other equipment used for radio location

Blog site for various home brew projects including antennas, power dividers etc

Radio Frequency Systems (Formerly Celwave, Cellwave, Cablewave),Wifi antennas, duplexers.

Distributed Antenna Systems technology used for gaining better coverage and using a lower power.

An article explaining features and characteristics of amateur radio log periodic antennas

Smart antennas or the adaptive antenna array and smart antenna technology used with SDR, cognitive radio, MIMO, and other new technologies.

Online calculator for J-Pole antennas. The J-pole antenna consists of a short and a long vertical pole with a feed point near the bottom. The antenna looks like the letter J, hence the name J-pole antenna.

Amateur radio Quad Antennas manufacturer based in Italy produce HF and VHF Quad antennas, and spare parts.

Main High Frequency Antennas from the 2009 LARC FARL Field Day, Ford Amateur Radio League. A document comparing antenna performances and flexibility among a G5RV an Carolina Windom and a Cushcraft R7 vertical antenna.

ICNIRPcalc allows you to calculate safety distances for many know amateur radio antennas with respect to ICNIRP limits by DL9KCE

A summary, overview or tutorial covering the basics of Meteor Scatter or Meteor Burst Communications, a form of radio signal propagation often used at VHF.

Near Vertical Incidence Skywave propagation is a form of radio wave propagation used on the MF and HF bands to provide radio communications and broadcasting coverage over short distances, especially where the terrain contains obstacles.

Ham and Amateur Radio Swap - Buy, Sell, Trade, Swap, radios, amplifiers, antennas and more. Classified ads for Canada, Ontario, Quebec, Maritimes, Prairies, British Columbia and USA

Ham radio shop based in Holland, dealer for cb radio products, amateur radio transceiver,Yaesu Icom and Kenwood, antennas cables and accessories

Manufacture HF radio antennas for sale to the amateur radio community, hexagonal beams, parts and accessories.

Article on antenna feed impedance and the importance of matching RF andtennas to feeders, including notes on Radiation resistance, loss resistance, and efficiency are also detailed.

About antenna or aerial resonance and bandwidth and the impact of RF antenna resonance and bandwidth on radio communications systems.

EDC is an amateur radio dealer for Heil Sound, Elecraft, Vibroplex and Force 12 antennas in Japan

Basic anctenna theory, general information on antennas

American Radio Supply, LLC is a supplier of quality radio communication parts and wireless connectivity components including coaxial connectors, cables, antennas.

Voltage baluns versus Current baluns. When to use them, differences, and typical usage in feeding antennas, or in resolving radio frequency interferences.

Maker of robust and strong commercial and amateur radio VHF UHF antennas

Ham Radio 3D Models published on Thingiverse, includes several parts for homebrewing amateur radio antennas, like spreaders, isolators a and mounts, wire antenna winders, adapters and many other accessories useful to antenna homebrewers.

These antennas are larger versions of the small loop antennas that were part of the cardboard back panel of older AC/DC five tube AM radios. Loop antennas of this type were popular in the very early days of radio. They are still useful today for long distance reception of AM radio stations

British ham radio antenna products manufacturer, base and portable antennas, mobile antennas, baluns, masts, production is mostly based on wire and whip antennas

Multi-Polarized antennas for Land Mobile Radio, Indoor & Outdoor Networks, Home Wireless, Mining Communications, Remote Monitoring, HAM & Scanner, Cellular, WiFi, Wimax, M2M, GPS, LTE, and GSM.

An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF bands 20 to 10 meters band. The AHVD Vertical dipole is an upside-down T design

Amateur Radio Coaxial Antennas by G3TXQ

The 2.6 Mhz M Dipole is constructed from #10 stranded insulated wire available in most hardware stores. The feedpoint uses a T-section of PVC pipe

Maxcon makes and sells Amateur Radio Antennas. Double extended Zepp antenna, multiband dipoles, bazooka antennas, and VHF Jpole, made in USA

Provide RF connectors, adaptors, antennas, accessories, mounts, coax, West Mountain Radio Products and Anderson Power Products available.

Ham radio VHF UHF antennas, aircraft, scanners, marine vhf antennas

RSGB article for beginners. How to build a dipole antenna, construction tips and correct setup of inverted-ve dipole antennas

In order to determine total distance that a transmission may be received by two elevated antennas, we must add together the radio horizon distance of both antennas.

Article based on ROHN engineering specification that will guide on proper guying heights and guy lengths when guying ham radio antenna masts. It will help you determine ahead of time the proper length of guy wires and the distance from the base of the mast to the anchor points

Amateur radio, Technology, Towers, Land, Wilderness, real estate, Visalia DX Convention Report #1 Flexradio Antennas Dxpedition, Elecraft introduces K3, here are pictures of the radio from the outside and inside from the Visalia DX Convention

Italian ham radio dealer for major brands like Icom Kenwood Yaesu HY-GAIN Heil Sound Rigexpert Palstar GAP antennas Diamond SteppIR and others

When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.

Daki Funkversand is a German based web shop for Amateur- & CB-Radio equipment. Our shop includes products such as radios, antennas, equipment, PMR, LPD & Freenet.

Founded in 1990, Nearson, Inc. has been providing our customers with exceptional value with the products and services we offer. VHF, UHF mobile radios, Cellular, PCS equipments as well as ISM band wireless data and WLAN applications.

An article describing basic concepts of antenna radiation, and in particular directional antennas like Yagi antennas or Quad antennas and how they determine the direction or signals.

French Blog about amateur radio and new technologies, Internet, Hyperfréquences (SHF), DX Radio et Contests, Antennas and Videos by F1JXQ

DX-HOLIDAY is a DX holiday and DXpedition holiday-style dedicated website which provides excellent information on a range of pertinent topics such as: organize a DX-holiday in remote area, organize DXpedition holiday-style with your family, booking and negotiating with hotels, obtaining a foreign amateur radio license, rent a radio shack and antennas during your holiday, travel documentation & money matters, health, emergency, and weather issues

This is a standard calculation method that can help you while tuning dipole antennas, by adjusting wire lengths. This method can be used also when you need to add lenght to your wires, and can be additionally used to quarter waves vertical antennas