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Radiosport headsets & boom-mic headsets for amateur radio

Frequently Asked Questions - about vintage tube-type ham radio and communications equipment

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

Clays Radio Shop offers an impressive selection of quality CB radios & accessories. Specializing in mobile CB and 10 meter communications.

Several kinds of operational data needed for Amateur Radio moonbounce (EME, earth moon earth) communications, the technical challenge amongst the various propagation modes on VHF, UHF and microwaves

FCARC exemplifies the principles of amateur radio: public service, particularly in emergency communications support; growth in our technical skills, and enhancing the application of those skills

A group of ham operators in Orange County, California that has supported over 30 hospitals since 1980. Includes information on how hams can provide hospital support in their own areas.

German association dedicated to digital radio communications

This Website is your resource for learning and enhancing your Morse Code / CW Communications skill

The Society is dedicated to the preservation and exhibition of historic-communications equipment and early electronic entertainment media, with an emphasis on the Pittsburgh area and related material

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

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

Dallas County REACT, Inc., is a nonprofit organization of citizens interested in radio communications and committed to public service.

US National Communications Sports Frequencies

Article on propagation basics. The ground wave used for radio communications signal propagation on the long, and medium wave bands for local radio communications

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.

The Radio Amateur Society of Hellas (R.A.S.H.) is a greek non profit association that interests for the radio amateur distribution, the promotion of interests of radio amateur service, the experimentation as well as the upgrade of technique of radio communications.

Get involved with 70cm Earth Moon Earth communications it is easier than you think, EME promotional Flier

The Badger Contesters is a club of like-minded hams who are interested in VHF/UHF/SHF weak signal communications. Our geographic focus is Wisconsin, however hams in Northern Illinois, Michigan's UP, and Eastern Minnesota are welcome to join us.

ARROW Communications Association Serving radio amateurs in Washtenaw and Wayne Counties

British Columbia Frequency Modulation Communications Association

This site is basically for the begeners (SWL) of india. This site is supporting to digital communication for hams also.

Our purpose is to further the hobby of Amateur Radio and to benefit the community with our communications expertise in times of need.

overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.

A complete guide to start operating EME. In this document, that is the result of several years of experimenting, the author summarize the steps to begin on Earth-Moon-Earth communications

Locura Digital is a Radio-Communication Professional company, dealer for wide range of amateur radio products, based in Barcelona Spain

VU2.IN Amateur Radio, HAM Radio India. Amateur radio portal from India, about emergency communication, disaster management, electronics, HF and VHF Radio hobby

WSJT New Software for VHF Meteor-Scatter Communication QST Article December 2001 by K1JT

High Performance Communications Receiver AKA, The Progressive Receiver

A group of Treasure Valley Hams have formed a group that is interested in experimenting with ballooning and using Amateur Radio and APRS to further our knowledge in communications.

In 1996 the NWARC was formed and is a non-profit society organized to deliver communication services during emergencies.

W4RAT based in the Virginia capitol city of Richmond.

Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.

ARRL Affiliated Special Services Club open to all who are interested in the hobby of amateur (HAM) radio communications.

We supply and maintain radio systems. Anyone that requires a radio communications system can be confident that we can supply and maintain a scheme that is second to none

The Saratoga Amateur Radio Association provides emergency communications for the City of Saratoga, and promotes amateur radio in the community.

Alpha 87a Communication can be used either stand alone to control the Alpha 87a amplifier or together with several CAT-Control programs by HB9ZS

The Japan Amateur Radio League (JARL) is cautiously watching new developments concerning the commercialization of Power Line Communications (PLC), while continuing to carry out joint experiments with a high speed power line communication promoters' alliance to reduce potential interference to radio communications.

The Madera County Amateur Radio Club was formed for public service, education, scientific and recreational purposes of amateur radio and to elevate the standards of operating practices and ethics in amateur radio communications. San Joacquin Valley California

Pine Valley Repeater Amateur Radio Club Richland County ARES/RACES Serving Richland County with Sky warn Storm spotters and communications were needed. Working with Emergency Management and other emergency services.

AmTOR may be considered as the next development from RTTY. AmTOR was introduced to overcome the problems with RTTY. As a result of its performance, it has become popular on the HF bands because it gives more reliable communication, especially when interference is present. It achieves this by using a coding system that allows errors to be detected and corrected.

PropNET is an ad-hoc 2-way (and potentially, "more-way") RF-based digital communication network whose activity is reported on the Internet. As participating stations periodically ID and exchange data, they report their activity to an Internet data-collection hub for presentation through this web site.

CCARS - Camden County Amateur Radio Society. Supporting the Department of Homeland Security's Emergency Communications Initiative while promoting Amateur Radio activity and fellowship in and around Camden County Georgia

This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.

Amateur Radio Operator since April of 2005. My time as a Technician was primarily spent working for the community and various organizations to provide Emergency Communications. I originally became a ham to work DX but found enjoyment volunteering for the local community.

All about the joy of amateur radio communications

Volunteer Amateur Radio operator organization providing emergency communications services to charitable events and in large scale disasters.

Quartslab has over 30 years of experience in supplying quartz crystals to the international communications market. Our product range includes the supply of quartz crystals in the frequency range 1.5 to 225 MHz in all popular holder types as well as crystal oscillators in DIL8 and DIL14 packages.

A high speed, self discovering, self configuring, fault tolerant, wireless computer network that can run for days from a fully charged car battery with focus on emergency communications

The premier flea market for radio, electronics, Computer & communications equipment in Indianapolis