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The _ISS Detector_ Android application, with over 5 million downloads, offers precise predictions for visible passes of the International Space Station. It notifies users minutes before an overhead pass, integrating local weather conditions to ensure optimal viewing opportunities. The core functionality focuses on the ISS, but in-app purchases extend its capabilities to track other celestial and artificial objects. Optional extensions, available via in-app purchase, allow users to monitor dozens of amateur radio and weather satellites, providing real-time transmitter information and Doppler frequencies. Additional extensions cover _Starlink_ satellites, the _Hubble Space Telescope_, rocket stages, bright satellites, comets, and planets, expanding the scope beyond the ISS to a broader range of observable space phenomena. The app's interface is designed for ease of use, displaying pass times, directions, and elevation. It adapts predictions based on the user's GPS location, ensuring accurate local forecasts. The latest update, dated April 3, 2026, includes corrections for magnitude values and various speed and stability optimizations.

The RVARC is a Fredericksburg, VA area 56 year affiliated club with the American Radio Relay League, ARRL.

Dedicated to the advancement and promotion of amateur radio, Rome, Ga.

6m/2m/70cm Yagi Antenna Built from Old TV Antenna This turned out to be a great little antenna. It works the 6 meter, 2 meter and 70 centimeter bands. You can use one common feedpoint or two seperate feedpoints depending on how you would like to connect this antenna to your transceiver.

G4URH - Coax cable types, specifications and data

SCCARA was formed as a general interest amateur radio club in 1921 and became a non-profit corporation in 1947.

British Amateur Television Club (BATC) web site.

The members of the Shoreline Amateur Radio Club reside in New Haven, Middlesex, and New London Counties.

An information paper by the International Amateur Radio Union, History of 40m allocation, propagation properties of 7 Mhz band

The Cuyahoga Amateur Radio Society (CARS) is a not-for-profit organization comprised of Amateur Radio (Ham Radio) operators dedicated to furthering the art of Ham Radio and to serving the public in times of disaster

Developing a protection plan against lightning

SARA is a volunteer club dedicated to furthering the advancements of Amateur Radio

Local amateur radio clubs often serve as vital hubs for hams to connect, share knowledge, and participate in group activities. The Orleans County Amateur Radio Club (OCARC), operating under the callsign WA2DQL, provides a focal point for amateur radio operators in Albion, New York, and the surrounding Orleans County area. These organizations frequently host events, offer technical assistance, and foster camaraderie among members, supporting various aspects of the hobby from contesting to emergency communications. OCARC's activities include discussions on proposed Technician class privileges for **80, 40, and 15 meters**, indicating an interest in regulatory changes affecting entry-level licensees. The club also promotes the use of online tools like _Radio Mobile Online_ for antenna pattern analysis and _VOACAP Online_ for propagation predictions, aiding members in optimizing their station performance. Furthermore, OCARC highlights participation in _Parks On The Air_ (POTA) events, such as the Erie Canal Bicentennial Celebration in 2025, encouraging outdoor operations and public engagement with amateur radio.

Approximately 2.8% annual decline in Australian amateur radio licenses was observed over the five years leading up to 2002, a trend that prompted further analysis of the country's amateur population. This resource examines licensing statistics and demographic shifts within the Australian amateur radio community between 1998 and 2007, utilizing available data to identify patterns in license issuance and renewal. The study focuses on **population trends** and the underlying factors contributing to changes in the number of active **amateur radio operators**. It provides insights into the health and growth trajectory of the hobby in Australia during this specific period. Understanding these demographic shifts is crucial for clubs, regulatory bodies, and equipment manufacturers to adapt strategies and foster engagement.

Bangladesh Amateur Radio League. The national level organization for promoting HAM Radio activity in Bangladesh.

York Region Amateur Radio Club, one of Canada's largest

CAARA, an ARRL affiliated club, operates the 2 meter W1GLO repeater on 145.130 MHz

Welcome to the home page for the Lake Area Amateur Radio Klub (K5LRK) located in southern Denton county, Texas

This website explains coverage and construction for our repeaters. Includes useful links and an insight into the Ham community in Rhode Island

The QRV.DK platform offers a dedicated **QRZ callsign search engine** specifically tailored for Danish amateur radio operators. It enables users to look up callsigns and ascertain their **Logbook of The World (LoTW)** status, a critical feature for DXers and contesters seeking QSL confirmations. The search functionality facilitates rapid access to operator details within the Danish amateur radio community, streamlining contact verification processes. Beyond callsign lookups, the resource includes a comprehensive repeater list for Denmark, providing essential information for local and regional VHF/UHF operations. This feature supports mobile and portable stations in locating active repeaters, enhancing communication reliability across various bands. The site also curates a collection of ham radio links, serving as a centralized hub for related amateur radio resources.

Established around 1968, the Wichita Amateur Radio Society (W.A.R.S.) N5WF provides a central hub for amateur radio operators in the Wichita Falls, Texas area. The society actively supports local ham radio interests, fostering community engagement and technical development among its members. W.A.R.S. is known for its commitment to public service communications and promoting the amateur radio hobby through various activities and educational initiatives. The society's activities often include field operations, technical presentations, and participation in emergency communications drills, which align with its mission to support the amateur radio community. Members frequently engage in _DXing_ and _contesting_, sharing their experiences and knowledge to help others improve their operating skills. The club also maintains local repeaters, providing essential infrastructure for regional communications.

A University of Florida Student Organization. The W4DFU amateur radio station was established in 1934 and represents the Gator Nation internationally on a daily basis.

Assocation des Radio Amateurs Libanais

Ikeda Shimin (Citizen) Amateur radio Club is the club which consists of Ikeda(JAPAN) citizens.``Sorry...japanese language only.

ARRL Affiliated Club Phoenix, Arizona

Provide an educational and recreational organization whose purpose is to support the Home Port Alliance in providing technical expertise, skills and volunteer manning.

Wikipedia page about amateur radio spectrum assigned to the amateur radio service

Local radio club for Harlow in Essex, England

The idea makes use of a very simple direct conversion receiver on the band of interest.

Ham radio portal of canada

Presents the Scranton Pocono Amateur Radio Club (SPARK), K3CSG, highlighting its status as one of Pennsylvania's most senior ARRL-affiliated clubs. The club, also known as the Abington Amateur Radio Club, maintains a consistent presence in the local amateur radio community. It provides a platform for radio enthusiasts to engage in various aspects of the hobby, including operating events and technical discussions. The resource details the club's historical background and its ongoing commitment to fostering amateur radio interest and skill development among its members. The club's activities often encompass participation in field days, local nets, and support for emergency communications. Members frequently operate on HF and VHF/UHF bands, utilizing various modes for local and DX contacts. The club's callsign, K3CSG, is regularly active during club events and contests, representing its collective efforts in amateur radio.

Superstition Amateur Radio Club: Ham Radio events and activities of the Superstition ARC include promotion of amateur radio amongst the public via licensing classes and radio communication demonstrations, on-air nets and discussion, and the December Hamfest in Mesa, Arizona

The Warminster Amateur Radio Club Inc. (Warminster Township, Bucks County, Pennsylvania) is a general purpose amateur radio club and its over 135 members are involved in all aspects of amateur radio.

TwinsLAN is Minnesota's only amateur radio club devoted to digital communications

To promote Amateur Radio in the Gadsden - Etowah County area and to provide public service to our community in the form of emergency communications.

General Motors Amateur Radio Club - WW8GM EchoLink Repeater in SE Michigan

Online calculator, to convert dbWatts to Watts and vice-versa, or ERP and EIRP by G4URH

SBARC one of the oldest amateur radio clubs in the U.S.

How it's misused and misunderstood, and why it's not useful.

Give Amateur Radio tests for the FCC

A small collection of bash scripts for pulling QTH info, grid square info, propagation charts, and monitoring prop logger postings.

The Palomar Amateur Radio Club ("PARC"), in existence since 1936, serves the Amateur Radio community of San Diego County California with repeaters located on Palomar Mountain

9M6 and 9W6 Amateur Radio Society in Sabah, Malaysia.

This is the downloads area for slides, plans and handouts for CARS Amateur Radio Licence Training Courses

The Northwest Amateur Radio Society serves amateur radio operators in the suburban FM 1960 area NW of Houston, Tx. NARS is active in community and public service events.

Serving London, Ontario, Canada and Area since 1920

ARRL special service club

Brevard County, Florida, USA