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N6GN's higher speed packet page for amateur radio digital networks

Amateur radio good operating practices by KG9OM

The PAPA Amateur Radio repeaters are located on some of the best hill tops in Southern California!

Explore this high-resolution ITU Zones Map, a critical reference resource for amateur radio operators, international broadcasters, and telecommunications engineers. Originally established by the International Telecommunication Union – Radiocommunication Sector (ITU-R) Broadcasting Services Division (1999), this chart accurately divides the globe into 90 specific CIRAF zones. This authoritative visual guide is indispensable for planning High Frequency (HF) radio propagation, scheduling international broadcasts, and verifying locations for radio contests and awards. Distinct from the 40 CQ Zones, the ITU zoning system provides the official administrative framework used for global frequency management. This digitally enhanced version ensures maximum clarity of zone boundaries and numbering (e.g., Zone 28 for Central Europe), making it an essential tool for technical accuracy in logbooks and station management. It serves as a trustworthy standard for educators, hobbyists, and industry professionals alike.

Protecting the ham radio stations, using a good ground system

Amateur radio shop in Barcelona Spain

County Hunting is one of many amateur radio activities. There are over a thousand hams who have worked all of the US counties. Some have done it several times

The International Amateur Radio Union

Information about the AKAFUNK, our activities and our amateur radio station DK0SU

Welcome to the Amateur Television Directory, the source for finding sites related to Amateur Television and Ham Radio. Find out where Amateur Television is being used in your state or country.

This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band

Links and sources of information about our club in Ventura County, California

The santa cruz county amateur radio club. activities, the newsletter short skip, events, links and other happenings about amateur radio.

VX-7/5R Computer Interfacing by Bas Helman G4TIC

Amateur Shortwave Radios Links and information,Also Swap Radio Groups Bearcat-scanner Drake Radios Hallicrafters and more

Enhanced SSB Audio (ESSB) is a specialized operating mode that extends the capabilities of traditional Single Sideband (SSB) voice transmissions. This presentation by K4QKY delves into the technical aspects of ESSB, discussing its advantages and the ongoing debates within the ham radio community regarding audio quality and bandwidth usage. ESSB aims to provide clearer and more natural-sounding audio, which can enhance the overall communication experience for operators. The presentation covers various topics, including microphone selection, audio processing techniques, and the importance of proper equalization. It also addresses the controversies surrounding ESSB, such as the potential for interference and the debate over whether it strays too far from traditional SSB practices. By understanding these elements, amateur radio operators can make informed decisions about their audio setups and contribute to discussions about the future of SSB operations.

The document titled 'Extending the Range of Your Handheld' by WG7S is a guide on how to extend the range of your handheld VHF UHF transceiver by using an external antenna. It provides information on comparing popular models, selecting the right antenna, and resources for amateur radio antennas.

Using patch antenna for amateur radio reception of the 13cm band with a sample 2.4 GHz LHCP patch antenna by K3TZ

Whith more than 20 years of ham practicen SWL Thierry LOMBRY, alias ONL5183, has written several technical pages about ham activities, including propagation, radio perturbations, radioastronomy, DXing, QSLing, ham-spirit, review of material and more. This very interesting website is completed by a large French section devoted to amateur astronomy illustrated with vivid colors pictures.

Speakers for Amateur Radio, 2-Way Radio, Shortwave and Scanner listening

The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

UK based online shop for cb and amateur radio equipment and related accessories

Ham radio site devoted to classic collectible amateur and military radios, featuring vintage ham radio color photos and commentary, free downloadable manuals and pamphlets and links for ham radio hobbyists.

Amateur radio delaer for major ham radio brands in Japan

H.A.R.C. Radio club in in Phila. Pa. area

This homepage introduces Palau Rental Shack for the visitors who enjoy amateur radio in Republi of Palau.

A family oriented Amateur Radio club in the Los Angeles area.

The Ukrainian Contest Club (UCC) The Ukrainian Amateur Radio League (UARL)

Radio Remote Control is a complete remote control system for Amateur radio.

Amateur Radio - Ham Radio Maidenhead Grid Square Locator Map

Located about 25 miles south of Boston, MA, near the City of Brockton.

Information and news about Amateur Radio in Scotland

The KP3AV Systems website offers a detailed listing of amateur radio repeaters across Puerto Rico, including operational frequencies and tones for VHF and UHF bands. It features sections dedicated to digital modes like DMR and C4FM, as well as information on FRS, GMRS, and MURS. The resource also includes articles on emergency communications protocols and provides access to Spanish-language manuals for various radio equipment. Recent content covers the new open-source FT2 mode for WSJT-X Improved, upcoming 60-meter band frequency allocations and power restrictions effective February 13, 2026, and discussions on 2-meter contacts with Desecheo Island from Puerto Rico. The site also presents U.S. amateur radio band plans and highlights local contesters like Manuel WP4TZ, offering practical insights into portable operations and contest participation.

Quality amateur radio transformers and electrical supplies

A google map of the UK amateur radio repeaters with clickable information

Bob Cooke, VE3BDB, is the Director for Ontario South Region, Radio Amateurs of Canada. He provides a website for RAC members within his Region.

Since 1935 serving amateur radio in Worcester MA

Eastern washington amateur radio group

We intend for this page to tell our story as well as be a resource for other "hams"

Assisting applicants in obtaining the various FCC-issued Amateur and Commercial Radio Operator licenses.

Self-hosted Open source PHP Amateur Radio Logging Application originally started by Peter 2E0SQL to allow simple interaction with the Ham Radio Deluxe logbook using MySQL

New York's Hall Of Science Amateur Radio Club.

Low signal, noise-high AC gain preamplifier

The County Hunting software, version **6.1**, is designed for amateur radio operators focused on USA-CA Award tracking and logging. This application supports _Windows_ environments and facilitates the import and export of ADIF files, enhancing QSL management by integrating electronic confirmations via LoTW and e-QSL. The software has been updated to align with the new award rules managed by MARAC, following the discontinuation of CQ magazine's involvement. Users can visualize QSLs post-scanning and benefit from enhanced ADIF import functionality. Version 5.4 introduced accelerated county searches via FCC databases, with filters for QSL confirmations and e-QSL enhancements. The software also includes a feature for backing up and restoring QSOs by LoTW confirmations. Visual County tools have been refined, offering improved map interactions and the addition of county flags. The software supports various digital modes including FT8, FT4, and SSTV, and includes functionality for PSK250 and 60m bands. The application is multilingual, with support for Italian, English, French, and Spanish, and provides automated updates and web-based county searches. DXZone Focus: County Hunting | ADIF | Windows | LoTW

Oklahoma's Largest Amateur Radio Hamfest

Amateur Radioastronomy in Poland

Resources for amateur radio astronomers, teachers, and students.

Foothills Amateur Radio Society

The California Polytechnic State University Amateur (Ham) Radio Club (CPARC) has a long tradition of communications service on campus and in the community of San Luis Obispo. The club was founded in 1947, making the Cal Poly Amateur Radio Club the second oldest club on campus