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Cal-av labs, inc. (formerly california avionics laboratories, inc.) manufactures electronic instruments and systems for research and industry. we specialize in radio communications and research/electronic test products. Amateur radio yagi antennas, rotary dipoles, baluns, morse keys.

This project was published in the April 2004 issue of the Australian magazine Amateur Radio, and has been designed using parts which are very readily available.

Baluns for amateur and commercial radio.

DX Tracker(tm) is a PC based amateur radio logging program. The program was created and is supported by Ed Lyons, KD6IET, and is constantly undergoing enhancements requested by its many users. The application has been used by amateur radio enthusiasts over the past 10 years, and many enhancements have been added to satisfy the radio amateur needs.

Plans and drawings of common amateur radio antennas, like jpoles, copper cactus, super jpole, omnidirectionals and quads

Australia's largest online database of VK email & URL's. Home of the AAR Netring and VK Classifieds. Repeater lists, maps and more...

The page provides a utility to record QSOs for amateur radio operators, allowing them to send the recorded signal back to the other station. It addresses challenges with VOX capability in radios and offers solutions for different radio models.

Dealer for Icom America (LMR/Marine/Amateur accessories) and Expert Electronics (SunSDR MB1) US dealer.

The Icom IC-7300 is a popular HF transceiver among amateur radio operators, known for its advanced features and performance. This modification guide focuses on enabling extended transmission capabilities, specifically for MARS and CAP frequencies. The instructions are based on the work of PA2DB and include detailed steps for removing specific diodes to unlock additional frequency ranges. Before proceeding with the modification, users are advised to take necessary precautions, such as ensuring the radio is powered off and using ESD protection. The guide emphasizes the importance of using appropriate soldering techniques and tools to avoid damaging sensitive components. A video demonstration is also provided to assist users visually in performing the mod. While this modification can enhance the functionality of the IC-7300, it is crucial to note that it may void the warranty and should be undertaken at the operator's own risk. The guide serves as a valuable resource for those looking to expand their operating capabilities with this versatile transceiver.

A simple delta loop antenna antenna for the six metre amateur radio band

3830 Archives is a mailing list archive with contest results for amateur radio operators. It includes contest scores and results, score submittal forms, live contest score updates, and an online score board for DX contests.

VHF UHF Amateur radio antenna and antenna parts, accessories for homebrewers, antenna kits, tubes, antenna masts, antenna tripores, insulators, power amplifier mosfet, power splitters by I0JXX

Yaesu FT-101 Users Group purpose and scope is to serve as a sort of benevolent, protective, mutual aid and social club, essentially for the purpose of interchanging information, ideas, experiences and problems. By and for owners of Yaesu amateur radio equipment. Founded in 1972 by Amateur Radio operator Milton Lowens N4ML

This program is for editing Memory Channels APRS, SKY COMMAND II and various settings on the kenwood amateur radio TH-D7A(G)/D7A(G2.0)/D7E(G2.0) A similar version exist for TH-D7 generation 1.

This Week's top news on amateur radio newsline

A site for Amateur Radio beginners and enthusiasts in Malaysia

Russian callsign prefix series: RAA-RZZ, UAA-UIZ, includs Amateur callsign system in Russia

G0KYA's Amateur Radio Blog, make a 2m Slim Jim antenna out of 300 Ohm ribbon cable.

Ham Radio Magazine of DARC

Sometimes amateurs like to home-brew their power supplies instead of purchasing one off the shelf at any of the major ham radio retail dealers.

Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software

The HF ham bands can be mysterious. Some work at night, some during the day. Some seem to be good for long distance contacts while some are better for nearby contacts. Even worse, they change tremendously from hour to hour and day to day. An overview on operating on HF amateur radio bands

Fox Delta Amateur Radio Projects & Kits

Browning Laboratories, Inc. has been a key player in the CB radio community since 1999, focusing on providing accurate information about Browning radio equipment. The website serves as a hub for enthusiasts, offering a wealth of resources including company history, myths and facts, and a collector's guide. It is supported by contributions from Browning enthusiasts and extensive research, ensuring that users have access to the most complete history available. In addition to historical content, the site features links to forums and other resources, fostering a community of CB radio operators and collectors. Whether you're a seasoned DXer or a newcomer to the world of CB radios, Browning Laboratories aims to bring people together through shared knowledge and passion for radio communication. The site is designed for optimal viewing and is regularly updated to maintain its relevance in the ever-evolving landscape of amateur radio.

Myrtle Beach, South Carolina Amateur Radio Club,

Some printable logbooks or logsheets, made to use whilst operating portable. Download free PDF files in landscape and portrait A4 Format.

The page is about the 144 Mhz Dirty Beacon project, a VHF beacon keyer by 9A4QV. It provides technical information, project details, and resources for amateur radio operators interested in beacon keyers. The content is useful for those looking to build or learn about VHF beacon keyers.

Balun Designs wind high quality baluns and ununs for Amateur Radio and commercial applications based on the researched and tested designs of Dr. Jerry Sevick, W2FMI.

German amateur radio portal mainly based on a bboard system, by DO1YAO

Chicago area amateur radio club

103 Amateur Radio photos taken at the Dayton Hamvention in May 1997

Qsl Information databse updated the 1st of the month. Over 130,000 managers and direct addresses

The San Diego Six SHooters Amateur Radio Club, established in April 2001, is dedicated to promoting all modes of operation on the Six Meter Amateur Radio Band.

SARA is a dedicated group of people that formed an international society to learn, trade technical information and do their own observations of the radio sky

This site provides dates and rules of nearly 400 Amateur Radio HF contests. Based on google calendar system, offer the possibilty to integrate calendar events in your google calendar too.

AN Wireless is a manufacturer and distributor of Self Supporting Tower Systems for Wireless Communications, Wireless Internet, Wireless Networking, Microwave, Paging, Broadcast, Two-Way Radio and Amateur Radio.

Novice Notes Online is Australia's top Internet site for beginners to amateur radio

Ten-Ten International Net, or 10-10 for short, is an organization of amateur radio operators dedicated to maintaining high levels of amateur radio communications on the 10-meter amateur band (28.0-29.7 MHz).

Amateur Radio (G3TXQ) - Malta 40 QRP CW Transceiver

Official homepage of the Ukrainian radio amateur UR-QRP Club

NA is an amateur radio logging program for MS-DOS computers, primarily for use in operating in amateur radio contests

ARRL page on amateur radio exam questio pools, withdrawn questions and question pool schedule

This is a 24 MOSFET Class E RF Amplifier, covering the 80 and 160 meter amateur radio bands.

The website offers a comprehensive guide on high-frequency (HF) skywave propagation for amateur radio operators. It explains HF radio propagation fundamentals, including electromagnetic wave properties, HF bands, and propagation modes like skywave, ground wave, and line-of-sight. The site focuses on the ionosphere's critical role, influenced by solar activity, in refracting HF waves for long-distance communication. Real-time monitoring tools such as DX clusters, beacons, and digital modes like FT8 assist users in tracking band activity and propagation conditions globally. Forecasting methods are detailed, highlighting scientific insights into solar-terrestrial interactions and ionospheric variability. The guide also covers advanced topics like NVIS and gray line propagation, ionosonde data, and propagation prediction models, making it a valuable resource for ham radio enthusiasts aiming to optimize communications

Original article published on February 1992 on 73 Amateur Radio Today about the 2m and 70 cm copper cactus J-pole antenna

The biggest RTTY/PSK31 club in Japan includes info on JARTS RTTY Contest

FREE bring & buy website for UK radio amateurs

Amateur radio products including Tarheel Antennas and ginpoles

A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.