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Worldwide distributor of radio communications, wireless equipment, accesories and complete systems.

The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern

RACOM is a Czech company specialized in design and production of radio modems and other devices for wireless data networks for radio channels from 140 to 900 MHz. RACOM radio data networks are suitable for data transfer in telemetry & SCADA applications, transaction networks, security systems, IP networks and firts of all mobile tracking and fleet management.

This article includes an online calculator for a 3 element Yagi Antenna. The formula and basics theory of Yagi Antenna are also explained with examples.

Wirelesss Institute of Australia

The AB2RA bowtie 80 meter antenna includes also a 40 meter dipole

Kentucky farmer invents wireless telephone! But was it radio? Facts and folklore about Nathan Stubblefield by Bob Lochte.

Specialize in engineering, design and repair of all rf equipment. Dealer for two way radios, scanners, shortwave radios, wi-fi antennas, wifi amplifiers. Based in Fortuna, California.

Low power radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, low power radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more

Quanzhou Risen Electronics Co., Ltd is a leading supplier of wireless communication equipment, produce Marine, HF SDR Radios, Repeaters, PMR Radios, Digital Radios based in China

Design and manufacture application specific microwave and RF amplifiers, upconverters, downconverters and multifunction assemblies.

This is about Small Antenna types and their properties which can help choosing proper antenna for high-frequency wireless communications as: two-way radio, microwave short links, repeaters, radio beacons or wireless telemetry

Minnesota Wireless Association, the Minnesota contesting connection.

SDRplay limited is a UK company and consists of a small group of engineers with strong connections to the UK Wireless semiconductor industry. SDRplay announced its first product, the RSP1 in August 2014

With the bluecat interface it is possibile to connect a Yaesu FT 817 857 897 to a computer or a android smartphone without any cable or interface, using a bluetooth wireless connection

Is a group who enjoy gathering together to practice the hobby of Amateur Radio.

Serving the South Hills area of Pittsburgh, PA

Incorporated 7 November 2001: the centenary year of Marconi's first transatlantic wireless experiment. Objective: to promote science, engineering, technology and traditional amateur radio through the Marconi communications legacy.

A video about secret listeners ham radio voluntary interceptors during ww2 an extract from The Secret Wireless War DVD

Here you will find an assortment of related links to some of the best CB and Scanner Sites on the Web. As well as a wealth of information on these two hobbies and others including articles on Ham Radio and other wireless technologies.

The World of LF, by G3YXM reference site for longwave operations. Introduction to operating on 136 and 501 Khz

A presentatio about the European HamNet, a large scale high speed amateur radio multimedia network based on commercial wireless devices using mainly the 6cm band

The mid florida dx association was formed in february 2005. to promote friendship and cooperation among amateur radio (wireless) operators primarily

CES Wireless Technologies manufacturer of Mobile information Systems including Dispatch and Mapping Software, GPS, AVL, Mobile Data Display Terminals, ANI, CTCSS, and Microphones

An on-line museum featuring over 400 pictures of radios and related items from the 1920's

Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

A non-profit organization seeking to preserve the history of the development of wireless communication by encouraging the acquisition, restoration, preservation and exhibition of antique wireless and radio apparatus

Understanding and using antenna radiation patterns

Designer and supplier of tower reinforcement systems to the wireless industry.

FCC Amateur Licensing > Renewing a License in the USA

This program is intended for far-field calculations, Calculate Estimated Power Density based on several factors.

W7VJD Lewis-Clark Amateur Radio Club is located in the Lewis-Clark Valley on the borders of Idaho and Washington. LCARC also provides emergency communcation support.

Dedicated to the Preservation and Enjoyment of Vintage Radio and Wireless Equipment Serving the greater Portland, Oregon area

Florida Antique Wireless Group

Interfacing the Jabra 9450 flex wireless headset to the Icom IC 7300 ham radio trasceiver.

The Wireless Society of Southern Maine is a ham radio club serving the Portland, Westbrook, Gorham, and Scarborough, areas in Southern Maine.

RFS is a global designer and manufacturer of cable and antenna systems plus active and passive RF conditioning modules, providing total-package solutions for wireless infrastructure.

A simple RF probe diagram

The richardson wireless klub is an arrl special service club of amateur radio operators based in richardson, tx, usa.

Supplier of RF, Microwave, & Wireless passive coaxial components, including Coaxial Attenuators, Adapters, Cables, DC Blocks, Terminations, & Connectors

The Richardson Wireless Klub is an ARRL Special Service club of amateur radio operators based in Richardson, TX, USA.

Converting the GN9120 Wireless Bluetooth Interface for Amateur Radio

Canberra Region Amateur Radio Club (Formerly the Wireless Institute of Australia, ACT Division).

The Waterville Area Wireless Association was founded in 1957

Ham Radio serving the community of Greene Twp & Erie, Pa. and surrounding areas

A photographic reference for wire and wireless telegraph key collectors and historians

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

A fully documented restoration project of a Hallicrafters SX99 receiver

The GN9120 is an excellent bluetooth type headset. Here an article about GN9120 Wireless Headset Conversion for Ham Radio with PTT