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The SETI League, Inc., founded in 1994, focused on participatory science, developing technology to seek definitive answers to the question of extraterrestrial intelligence. The organization operated in five dozen countries across all seven continents, maintaining the quest for cosmic companions through the efforts of its 1500 members. Although the organization shuttered its virtual doors after thirty years in 2024, the website remains for educational and historical purposes, documenting past research and activities. Key technical resources include the _SETI League Mini-Manual_ for constructing a 12 GHz radio telescope under $200, and software like _SETIFox for Windows_ and _Radio Eyes_ for radio astronomy sky viewing. The site also features _Project Argus_ detections, moonbounce signal detections, and space probe signal detections, providing concrete examples of amateur radio astronomy applications. Publications such as the quarterly newsletter _SearchLites_ and various articles by Dr. SETI (H. Paul Shuch, Ph.D.) are available, alongside information on the Third Penn State SETI Symposium in 2025. The site also offers insights into hydrogen line emission observations, presented in time domain, frequency domain, waterfall, and surface plot formats.

Intermediate licence amateur radio station located in Sydney Australia

The C.A.R.E.N. Club is one of the oldest amateur radio clubs in Arkansas, dating back to the late 1950s. Just as the name implies, the C.A.R.E.N. Club is the state leader in emergency communications, SKYWARN, Amateur Radio Emergency Service (ARES), Radio Amateur Civil Emergency Service (RACES).

Official web site of the mountain amateur radio club w6bw, oakhurst ca.

A free photo hosting service for amateur radio. Upload your own photos or browse through what others have uploaded.

This resource, intended to present historical score records for the _ARRL International DX Contest_, currently displays a "Page not found" error. The page's original purpose was to document top scores and records for both Phone and CW segments of the contest, offering a historical perspective on competitive amateur radio operating. Without the content, no specific technical details regarding past contest results, callsigns of record holders, or score breakdowns can be extracted. The resource's current state prevents any analysis of score comparisons, operational strategies of top stations, or the evolution of contest performance over time.

Hams or amateur radio operators and CB operators usually cannot have ideal grounds, but with some care and planning they can have nearly perfect systems

founded in 1914

Over 15 years of operational notes are documented on the AA6E Station Log, covering diverse amateur radio topics. The blog presents detailed accounts of station setup, antenna experiments, and digital mode operations, often featuring specific equipment like the _Ten-Tec Orion_ transceiver. It includes practical discussions on **station grounding techniques** and insights into PSK31 Morse code communication. The resource provides a chronological record of Martin Ewing's amateur radio activities, offering firsthand perspectives on equipment performance and operational challenges. Content often includes technical observations and solutions developed through practical experience, such as optimizing antenna systems for various bands. Specific entries detail contest participation and DX chasing, providing context for operational decisions and results.

Club and Repeater Network in Central Florida

Rotors and rotor controllers for amateur radio polish manufacturer.

Friends & Amateur Radio Communications Enthusiasts

Sheriff's Tactical Amateur Radio Communications Hillsborough County Sheriff's Office Amateur radio in law enforcement

The United Radio Amateur club was formed back in 1927, and has served the South Bay area of Los Angeles for over 80 years.

RF Solutions is your authorised distributor of superior amateur radio products in Australia, New Zealand, and the Asia Pacific region

The dbm online calculator and reference table for 50 Ohm

European Radio Amateurs' Organization (EURAO) QSL Bureaus Network with the strong commitment to make available, whenever possible, to all radio amateurs their QSLs at no extra cost other than shipping and handling, without any kind of restriction

Association of radio amateurs devoted to the promotion of interest in amateur radio communications in the National Capital Area

The QSY Society is a group of amateur radio enthusiasts dedicated to having FUN with the hobby, while still fulfilling the stated goals of the amateur radio service. The majority of our membership comes from the Mid-Hudson region of New York State

The mid florida dx association was formed in february 2005. to promote friendship and cooperation among amateur radio (wireless) operators primarily

D-star amateur radio systems, your source for d-star digital amateur radio. D-Stars users website

Formed in 1955 is an incorporated Amateur Radio club dedicated to the promotion of DX information and operating by members residing in the Willamette Valley and Southwest Washington.

Homepage of the OS/2 and eComStation enabled Radio Amateurs, the HAM/2s. Reference site for OS/2 ham radio users,

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.

The CES Wireless Technologies website details a range of **GPS fleet tracking** solutions designed for mobile information systems. It highlights offerings such as dispatch and mapping software, Automatic Vehicle Location (AVL) systems, and mobile data display terminals. The platform also mentions support for Automatic Number Identification (ANI) and Continuous Tone-Coded Squelch System (CTCSS) functionalities, indicating integration with two-way radio communication protocols. Specific products include GPS tracking devices and associated software for fleet management, emphasizing features like real-time location monitoring and operational efficiency. The site positions itself as a manufacturer in this specialized domain, catering to commercial and public safety sectors requiring robust mobile data solutions. While the page title mentions "Ham Radio Directory" categories, the content primarily focuses on commercial GPS and fleet management technologies, not amateur radio applications. The listed products are geared towards professional mobile radio (PMR) environments rather than typical ham radio operations.

Here you will be able to access all of the information regarding our amateur radio disaster relief communications organization, its divisions and volunteer members

Belgium radio club, weekly news bulletin. Regular times qrv from lightship Westhinder III.

The Chattooga - Walker amateur radio club

An amateur radio organization dedicated to furthering the amateur radio hobby. It consists of members from Oakland, Alameda, Piedmont and other cities in the immediate area.

Free Windows contest logging software, initially designed for the ARI 40-80 contest supports all major world wide contests. QARtest supports dx cluster, radio control interface and many new features. Can be used for most popular amateur radio contests. Works from Windows XP to Windows 10.

Amateur radio operators seeking local community and emergency communications involvement often look for active clubs. The Rock River Radio Club (RRRC) provides a platform for hams in Wisconsin to participate in weekly nets and monthly meetings, fostering camaraderie and operational readiness. Their activities include regular ARES/RACES nets, which are crucial for maintaining proficiency in emergency communication protocols and equipment. The club hosts weekly nets on both VHF/UHF and HF bands, allowing members to practice various modes and frequencies. These include a Monday evening net on the Juneau Repeater at _146.64 MHz_ (PL 123.0) and a Thursday evening net on the Knowles Repeater at _442.975 MHz_ (PL 123.0). An HF net operates on Saturdays at **3.947 MHz**, with an additional ARES/RACES net on Sundays at **3.967 MHz**. Monthly club meetings are held on the first Tuesday of each month at 7 PM in Randolph, Wisconsin, providing a consistent gathering point for members and prospective hams. The club also engages in public demonstrations, such as those at the Experimental Aircraft Association (EAA) Dodge County Chapter Fly-In, showcasing amateur radio to a broader audience.

Saipan rental shack for the customer who enjoys amateur radio from Saipan

West Tennessee amateur radio society

A selection of speakers or headphones for use with amateur radio equipment. Includes an interesting paragraph comparing Dynamic and Electret Condenser Microphones, but also about audio Equalization.

Fellowship for all Amateur Radio Operators of Rockingham County. Home of the N4IV repeater system. Licensing classes, testing, ARES, and Skywarn

Amateur radio kits online shop, includes Mini Touch Key, QRP HF SSB and CW transceiver kits

The loma pioneer repeater club - lprc provides 2 meter vhf and 440 uhf amateur radio and emergency communication for the san francisco and monterey bay areas from a repeater on mt loma prieta. aprs digipeater available.

A Mailing list for Greek Radio Amateurs from all over the world.

The Las Cumbres Amateur Radio Club "From the Sierra to the Sea, this is K6FB repeater"

This is multi multi radio amateur contest station oh2u which have won three european champions

A DX and Contest Minded Amateur Radio Club Serving the California Coast North of the Golden Gate Bridge

The Stanford Amateur Radio Club (W6YX) consists of about 50 students, staff, faculty, alumni, and community members.

K8qik amateur radio club

Newsletter of the Silverado Amateur Radio Society Napa California

Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter

How to reduce and eliminate the RF interference at VHF caused by the wired network

Offer a wide variety of activities, including instruction to prospective new Amateurs, and classes for upgrades to General and Extra

The Estonian Radioamateurs Union

Constructing a directional antenna for the 6-meter band (50 MHz) can significantly improve signal strength and reduce QRM during local ragchews or **Field Day** operations. This project details the assembly of a Moxon rectangle antenna, known for its compact size and respectable gain, making it a practical choice for portable or fixed station use on the magic band. The design utilizes readily available materials such as 14 AWG copper wire for the radiating elements and PVC pipe for the frame, ensuring an inexpensive build. The article provides specific dimensions and construction steps, allowing radio amateurs to replicate the antenna with confidence. It emphasizes achieving a low **SWR** across a bandwidth exceeding 1 MHz, crucial for efficient power transfer from the transceiver. Performance characteristics include a reported 5.5 dBi gain and a front-to-back ratio of 20 dB, offering effective directivity. The project also highlights the antenna's suitability for Field Day, where quick deployment and reliable performance are paramount for maximizing contacts.