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Suburban amateur radio repeater is a wider coverage machine with six receiver sites in the chicago metropolitan area.

Using the raspberry Pi for amateur radio operations with digital mode decoding and log book program

Our purpose is to have fun with Amateur Radio, to help others that wish to join the hobby, and to offer assistance to our community in times of eminent danger or disaster.

Radio amateurs worldwide are being asked to help collect data from the student-built SSETI Express satellite, due to be placed in orbit on 27 September. To encourage them, ESA’s Education department has organised two competitions and is supplying free downloadable software.

Simple QRP projects, 10m, 6m, WSPR beaconing, sub-9kHz and other random stuff

The Delaware Valley Radio Association is a non-profit 501(c)(3) organization devoted to the promotion and preservation of the amateur radio hobby. The club is comprised of amateur radio operators and their families.

Hardsoft products home page: telefonia, telecommunications, radio, computers, base

RUSSIA Ham radio club AMUR, FarEast Khabarovsk. News, events, photos.

Hundreds of ham radio operators in the US Midwest rely on regional hamfests for equipment sales, technical presentations, and social interaction. This Yahoo Groups forum serves as a dedicated platform for promoting these events, allowing organizers to post announcements and attendees to find information on upcoming gatherings. The group's focus is specifically on hamfests within the Midwest, facilitating local and regional participation in these important amateur radio activities. The platform enables members to share details about various hamfest activities, including flea markets, vendor exhibits, and license examination sessions. While the group primarily functions as an announcement board, it also supports community discussion related to event planning and attendance. The resource helps hams locate nearby events, fostering engagement within the Midwest amateur radio community.

By AYR Ham Radio Club

The **Escort** series Tactical Carrying System provides robust protection and enhanced portability for popular HF transceivers, addressing the need for secure field operation and transport. These systems, designed for models such as the Yaesu FT-857D/891, FT-991, FT-817/818ND, and Icom IC-706/703/7000, IC-7300, feature military-grade construction with front panel protection and versatile carrying strap attachment points. Operators can confidently deploy their rigs in various environments, from SOTA activations to casual field days, knowing their equipment is safeguarded against bumps and impacts. Beyond tactical carriers, Portable Zero LLC also produces the **Sherpa Pack** for the Yaesu FT-817 and the Field Power 12 and Field Power 3 Battery Cases. These accessories complement portable operations by providing essential power solutions and additional carrying options, facilitating extended off-grid activity. Established no later than 2013, Portable Zero LLC manufactures its products in the USA, leveraging CAD design and CNC precision laser cutting for consistent quality. The company's commitment to enhancing portable amateur radio operations is evident in its specialized product line, available in finishes like Black Texture and OD Green.

The Hamilton Amateur Radio Club operates the VE3NCF repeater, 146.760- and 444.075+MHz. It is open for use by all Hams

Over 100 trained amateur radio operators comprise the New York City Amateur Radio Emergency Communications Service (_NYC-ARECS_), an auxiliary communications service dedicated to providing vital radio links during local, regional, or national civil emergencies. This organization supports governments, civil-preparedness, and relief agencies in situations such as power failures, explosions, fires, floods, earthquakes, or terrorist activities. Their operational readiness is critical for maintaining communications when conventional infrastructure fails, leveraging the resilience and adaptability of amateur radio. NYC-ARECS actively participates in the NYC Office of Emergency Management (_OEM_) Partners in Preparedness program and is a member of DHS FEMA's National Preparedness Coalition, demonstrating its integration into broader emergency response frameworks. The group's activities include regular training, maintaining operational readiness, and deploying communication assets across the five boroughs of New York City. Their efforts ensure robust, independent communication channels are available to support disaster relief and public safety operations.

Twenty-four repeaters, including D-STAR and Fusion systems, are maintained and operated by MARCA Inc., primarily located on Arizona mountaintops and around the Phoenix metropolitan area. The organization, holding the callsign _W7MOT_, facilitates a wide range of amateur radio activities, such as ARRL Field Day events near Forest Lakes, Arizona, and participation in ARRL FMT contests. Members engage in antenna experimentation, construction, and maintenance trips to repeater sites. The club's interests span diverse topics, including HF voice, digital modes like _WSPR_, _WSJT-X_ (FT8, FT4), and CW, alongside DXing, MESH networking, and EOC operations. It supports technologies from SDR radio building to antique radio restoration and computer-based operations like Echolink, fostering a Single Board Computer (SBC) and Raspberry Pi group. Monthly meetings, held on the third Tuesday, feature business discussions and guest presentations, with informal summer gatherings and an annual holiday dinner in December. Monthly VE testing sessions for Technician, General, and Extra Class licenses are conducted by Ray Vasquez, K4RMV. Post-meeting discussions often cover specialized interests such as repeater operations, technical topics, D-STAR, SDR, APRS, Fusion, and Raspberry Pi projects.

Linked Repeater System in Darby, PA

Commercial and Private Two Way Radio Communication equipment manufactured specifically for the United Kingdom, Europe, African, Asian and the USA markets.

Pignology is mainly an app developer focused on ham radio related topics. Offers radio remote control devices, and develop apps for them along to logbook apps and other ham radio related utilities.

The amateur radio club of el cajon is a group of persons from all walks of life with a command thread amateur radio.

A list of active Amateur Radio satellites grouped by FM SSB/CW and satellite monitoring

Constructing a dip oscillator provides radio amateurs with a fundamental piece of test equipment for resonant circuit analysis. This particular design, adapted by VK3YE from a concept by _Drew Diamond VK3XU_, details a practical build using readily available components. The unit incorporates four plug-in coils, covering a frequency range from **2.6 MHz to 55 MHz**, mounted on 5-pin DIN plugs for versatility. A salvaged two-gang air dielectric variable capacitor, fitted with a vernier reduction drive, serves as the tuning mechanism, with the smaller gang optimizing bandspread at higher frequencies. In practical application, the dip oscillator is used by setting the meter needle to approximately two-thirds scale. When the instrument's coil is brought near a tuned circuit under test, a noticeable dip in the meter reading indicates resonance. This allows for precise measurement of resonant frequencies in antennas, filters, and other RF circuitry, proving invaluable for homebrewing and troubleshooting. The design emphasizes short wire runs for stable operation, particularly at the higher end of its operational range.

HamBlog is a weblog host for Amateur Radio operators.

Article describes a circuit that accelerates the coil of DC relays by momentarily doubling their voltage.

MorseExpert 1.15 decodes Morse Code audio to text, leveraging algorithms from CW Skimmer for optimal performance on weak, fading signals amidst interference on amateur radio bands. It processes audio from the device's built-in microphone or an external radio receiver via cable, optionally highlighting Ham callsigns and keywords. The application features a waterfall display with a bandwidth of 200-1200 Hz, decodes frequencies between 300-1100 Hz, and supports keying speeds from 12-45 WPM with automatic CW pitch detection. Recent updates include support for Android 15, edge-to-edge mode, improved stability, and a pause decoding button. A premium version offers an ad-free experience and user-selected text colors. Users can switch between General Text mode and Ham Radio QSO mode, which enhances word segmentation and highlights callsigns. The app also includes a frequency lock mode, text selection capabilities for copying, sharing, or saving decoded text, and provides guidance on reducing acoustic echo and constructing an audio attenuator for optimal radio interfacing.

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

ARRL documentation on how get reciprocal lincece or authoriazion to operate ham radio abroad

The RRDXA is the Amateur Radio Contest Club in the western part of Germany and the BENELUX-Countries

A nice presentation for beginners by Radio Club of Tacoma

Welcome to the KC Club of Fort Worth, W5SH Website. Ham Radio fun for all.

The official web site for the santa clarita amateur radio club.

Things on the occasion of amateur radio activity only

Laser Engraved, Etched and Marked gift items for Amateur Radio Operators

Goshen, Indiana

Rack Mounts for ham radio transceivers and receivers

A member of the adventure radio group

Converting the GN9120 Wireless Bluetooth Interface for Amateur Radio

CMARC has been serving the greater Columbia and Montour region for over 25 years.

The Matanuska Amateur Radio Association (M.A.R.A.) is a general interest amateur radio club, with approximately 100 members, our members are involved in every aspect of amateur radio.

QTH.COM by KA9FOX offer classified swap ads for amateur radio and web design along to evoluted web hosting

Radio 2 Radio broadcasts amateur & HAM radio news and current events from around the world.

Russian amateur radio dealer for major ham radio brands like ICOM KENWOOD YAESU, MFJ, RigExpert

A shortwave radio listeners log book runs on Windows and MacOS Catalina and above. The KB6IBB SWL Logger is a program designed for the shortwave radio listener. It offers shortwave specific logging of stations, with most tasks handled automatically. The program also incorporates the use of EiBi shortwave database for logging and looking up various known shortwave stations world wide.

The Las Vegas Radio Amateur Club operates the K7UGE repeaters on 146.94 and and 448.500. Repeater is located on top of the Las Vegas Hilton Hotel & Casino, the UHF repeater is located on top of the Tropicana Hotel & Casino.

Amateur Radio Association of Nebraska - (Formerly Hastings Amateur Radio Club) is a group of dedicated volunteer amateur radio enthusiasts located in central and south central Nebraska.

Softrock Version 6.1 Software Defined Radio experience and modifications by DF9CY

A home made 4 element yagi antenna that can be easily adapted for 10 meter band

International Public Access Radio via IRRS Shortwave and Internet Radio NEXUS via MP3 streaming audio

The Shortwave Radio Audio Archive is a collection of shortwave radio recordings in both the form of a podcast and blog with embedded audio. The collection grows every day and includes both historic and modern day shortwave radio audio recordings

Learn which are the top ten reason why you should operate in portable mode

You'll find information about the club, membership, our newsletter, the BARC repeaters, and special club events.

The Information Source For Makers, Experimenters, DIY, Home Brewers, Restorers, and Amateur Radio Operators