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TACLog offers a distinct approach to contest logging for **VHF/UHF/SHF** operations, diverging from the rigid input formats often found in other logging applications. This software prioritizes operational freedom, allowing contesters to input data in a sequence that suits their workflow during a fast-paced event, rather than being constrained by predefined field orders. It's particularly tailored for those participating in contests governed by **Region 1 rules**, ensuring compliance with established regulations. The program's design focuses on practicality for serious contesters, providing a robust platform for managing contacts. Its support for the EDI format is a significant advantage, streamlining the process of submitting logs to contest committees and facilitating data exchange within the amateur radio community. My experience with various logging tools confirms that flexibility in data entry can dramatically improve efficiency during multi-operator or high-rate single-operator contests, where every second counts.

This dynamic DX Map aggregates various resources that will help radio amateurs to operate their stations in search of long distance contacts, DX. HamDXMap displays current MUF values and foF2 critical frequency values around the globe.

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.

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.

An ARRL special club service

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

Linked Repeater System in Darby, PA

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

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

Minnesota Amateur Radio (MARC)

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

Plano Amateur Radio Klub

The Noantri WebCLX presents real-time DX spots, including frequency, DX callsign, country, and comments, facilitating active DXing and contesting. It operates as a web-based cluster, offering an alternative to traditional Telnet clusters for accessing spotting data. The interface displays current UTC, allowing operators to track propagation and activity across various amateur bands. This service is maintained by the _Noantri DX Group ARI Roma_, indicating its origin within the Italian amateur radio community. It supports the dynamic exchange of DX information, crucial for operators seeking new entities or participating in competitive events. Key features include the display of spots for modes like FT8, and it functions as a DXSpider-based system, providing a robust platform for **DX spotting** and **propagation analysis**.

Ramona Outback Amateur Radio Sociey

Goshen, Indiana

A collection of articles related to my pursuit of the hobby of Amateur Radio.

The bay area amateur radio club (baarc) is a non-profit organization of people interested in amateur radio in the bay area of michigan.

This Club has long history in serving Henry County.

The Red Oak Victory Amateur Radio Club (ROVARC), an ARRL affiliated club, was incorporated in 1999 as a non-profit club.

The Club Radio Amateur de Québec (CRAQ) is a prominent amateur radio club based in Québec, Canada, dedicated to fostering interest and participation in amateur radio. It provides a platform for local hams to connect, share knowledge, and engage in various radio-related activities, including **DXing**, contesting, and technical experimentation. The club supports its members through regular meetings, technical presentations, and organized operating events, aiming to enhance their skills and enjoyment of the hobby. CRAQ also plays a role in public service communications, often collaborating with local authorities for emergency preparedness and response. CRAQ's activities include operating club stations, organizing **field day** events, and offering training sessions for new licensees. Members frequently participate in provincial and national contests, contributing to the club's competitive standing. The club maintains a network of repeaters, providing reliable local communication infrastructure for its members and the broader amateur radio community in the Québec area. These resources facilitate daily QSO traffic and serve as critical links during community service operations.

Wantagh amateur radio club, wantagh, long island, new york. Our club is one of the oldest amateur radio clubs, if not the oldest, on Long Island.

Provides information and resources on Amateur (Ham) Radio from N0UN. Ham Radio Friends, Shacks and Blog by N0UN

The Milford Amateur Radio Club, Established in 1961 Milford, Michigan

Home of the Pampanito Amateur Radio Club

The Bristol Amateur Radio Club's purpose is to: Facilitate the exchange of information and general cooperation between members to promote amateur radio knowledge, fraternalism and individual operating efficiency

Low Country Amateur Radio Club Summerville, South Carolina 147.060+ / 147.030

The RFzero is a multi function signal platform developed for radio amateurs who wants to extend the Arduino skills in combination with RF. The RFzero board is largely compatible with the Arduino Zero and Arduino M0 boards, however, it has been carefully designed for flexible use in RF applications and with attention to the frequency spectrum and stability performance.

Converting the GN9120 Wireless Bluetooth Interface for Amateur Radio

The Utility DXers Forum (UDXF) provides a centralized platform for exchanging news and information concerning utility radio stations and signals operating within the 0 to 30 MHz spectrum. It specifically excludes broadcasting, pirate, and amateur radio transmissions, concentrating instead on a diverse array of other signals. The resource details the types of stations covered, including maritime coastal and ship stations, aeronautical ground and aircraft communications (voice, HFDL, Selcalls, Volmet), military operations, various beacons (NDB, driftnet, propagation, pirate, high-frequency), fax transmissions, numbers stations, diplomatic communications, clandestines, and other unusual signals. Further content addresses radar systems such as Over-the-Horizon, Ocean Wave, and CODAR, alongside ionosondes, chirpsounders, ALE-systems, Selcall-systems, and tone calls. Experimental stations and standard frequency and time stations are also within its scope. The forum also acknowledges utility radio-related amateur events like the International Lighthouse Weekend and Night of Nights, providing a broader context for listeners. The site offers sections for modes, hardware, software, a utility radio archive, digital BC & HF conditions, and a utility radio club archive, along with QSLs and pennants.

A cavity filter, often a critical component in _duplexer_ designs, functions as a sharply tuned resonant circuit, allowing only specific frequencies to pass while attenuating others. These filters are essential for maintaining signal integrity in environments where multiple transmitters and receivers operate simultaneously on closely spaced frequencies, such as in repeater stations. The article details how these filters, sometimes referred to as _notch filters_, achieve high Q factors, which are crucial for their performance. Understanding the principles of cavity filters is fundamental for any amateur radio operator involved in repeater operation or designing custom RF front-ends. The discussion covers the basic circuitry and operational characteristics that enable these devices to provide significant isolation, often achieving **-80 dB** or more between transmit and receive paths. This level of isolation is vital for preventing receiver desensitization and intermodulation distortion. Properly tuned cavity filters ensure that a repeater can transmit and receive simultaneously on different frequencies without self-interference, a common challenge in VHF/UHF operations.

The Denton County Amateur Radio Association is located in Denton, Texas

Loki5ace version 5.3.39.1 is a freeware amateur radio logging program designed for Windows operating systems (XP, Vista, 7) and compatible with Linux Wine. The software offers multiple installation methods, including a portable version (loc5portable.zip or Loce5pack.zip) that does not require administrator rights or Windows Registry modifications, making it suitable for USB stick deployment or limited user accounts. An official installation (loc5acest.zip) is also available, typically installing to C:\Program Files\Hamlok\LokiAce\ and requiring administrator privileges for initial setup and updates, with user-specific settings and database files stored in application data folders. The program's database, Loc4ac.mdb, can be renamed to the user's callsign for personalization. Loki5ace supports context-sensitive help, which requires WinHlp32.exe installation on Windows Vista and 7. The software includes features such as special print functions, Telnet Watch with comment display, and an 'Own QTH' field for location management. Updates can be performed via an in-program function or by manually copying the Loki5ace.zip file, which contains the main executable, Loki5ace.exe, to the program folder. The latest version 5.3.39.0 includes repairs for special prints and enhancements to the Telnet Watch feature.

The WAU award is issued by the "RadioAmator" magazine for contacts with amateur radio stations in all regions of Ukraine, cities of Kiev and Sevastopol made after 01.01.1993.

supports three repeaters in the Florence SC area. The Club Callsign, W4ULH authorized by the Federal Communications Commission.

The Breeze Shooters is an amateur radio organization based in Western Pennsylvania, established in 1937 by a group of local hams. The club's initial focus was on fostering camaraderie and promoting amateur radio activities among its members. Over the decades, its membership has grown significantly, at one point exceeding 1,800 individuals, making it one of the larger regional ham radio clubs. The organization maintains a casual operational structure, emphasizing member participation in various aspects of the hobby rather than strict formal governance. The club actively supports and organizes events such as the annual Breeze Shooters Hamfest, a significant gathering for the amateur radio community in the region. Members frequently engage in contesting, DXing, and local emergency communications support. The club's history includes a strong tradition of mentoring new hams and providing a platform for experienced operators to share knowledge and resources. Its enduring presence in Western Pennsylvania underscores its role in sustaining local amateur radio interest and activity.

TEAC is an ARRL Affiliated Amateur Radio Club serving the Northeast area of Harris County including Humble, Kingwood, Atascocita, Huffman, Porter and surrounding areas.

The **Arlington Amateur Radio Club** (K5SLD) website details club activities, including a weekly Taco Tuesday net on their 147.140 MHz repeater with a 110.9 Hz PL tone. The club, organized in July 1955 by 22 hams, also hosts monthly dining events and promotes Community Emergency Response Team (CERT) training through the Arlington Fire Department. Membership renewal information for 2026 dues is prominently featured, with an online payment option and a donation button available on the "Pay Dues" page. Club communications extend to a dedicated Facebook page for members and the wider amateur radio community. The site lists upcoming contests and encourages participation in local events. The 2-meter repeater net is open to all, fostering local camaraderie and technical exchange among hams in the Arlington, Texas area, regardless of club affiliation.

Six meter club of chicago smcc amateur radiomembers interested in hf/vhf/uhf, special events and public service

Ham radio and cb radio italian only web site dedicated to amateur radio and citizens band

PalmVE is a program for Palm based handheld computers that is built to aid as a virtual volunteer examiner for amateur radio written tests

Amateur Radio, SkyWarn, RACES, ARES, and more

Old Cars and Amateur Radio. This club has a repeater on site of the World Longest Running car cruise. Part of the ARRG.US network

ECARS began operation in 1968 as an Amateur Radio public service net for mobile operators on 7.255 MHz

The W1HP Philips Amateur Radio Club, originally the Hewlett-Packard ARC, has a history rooted in Andover, Massachusetts, as an employer-sponsored club. It evolved from a "full-service" club to primarily a Field Day club, maintaining its focus on this major annual effort. The club has participated in Field Day under various configurations, including W1HP/1B in Arizona, and has partnered with K1KKM and utilized GOTA stations like K1KKM and KD1NA. Recent Field Day operations reflect adaptations to changing circumstances, with members operating individually due to COVID-19 and later under "new" ARRL rules, sometimes as a "distributed" club. The club's constitution is also referenced, providing insight into its foundational structure. This page is maintained by W1DYJ, with a last update noted as 9 December 2025.

Cheyenne Wyoming

Amateur radio station from Capri island, Italy

The Hurricane Watch Net, Amateur Radio Serving the National Hurricane Center Since 1965. The HWN provides up to date tropical weather information for the Atlantic and Eastern Pacific. Subscribe for tropical weather email.

Founded by a small group of young hams in East St. Louis, Illinois, the W9AIU Egyptian Radio Club serves as a local amateur radio organization. The club's origins trace back to meetings held in Herb Wilhelm's, W9APX, dry cleaning shop, indicating a grassroots beginning for this community group. It operates as a typical ham radio club, fostering camaraderie and likely supporting various aspects of the hobby for its members. As an amateur radio club, W9AIU likely engages in activities such as local nets, field day operations, and perhaps provides licensing support or technical discussions. Such clubs are crucial for new hams seeking mentorship and for experienced operators looking to participate in group activities like contesting or public service communications. The club's presence in Illinois suggests a focus on local and regional amateur radio initiatives.