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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

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

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.

ARRL special service club

Serving London, Ontario, Canada and Area since 1920

Key west amateur radio club w4llo

Satellite Amateur Radio Club, W6AB, located on beautiful Vandenberg Air Force Base, on the California Central Coast.

Amateur radio log book for iOS devices, including iPad and iPhone. Featuring several advanced logging functions, including export to ADIF, DX Cluster access, LoTW eQSL interface and more

Dedicated to supporting the implementation of amateur packet radio network in the USA

Amateur radio contest station K1TTT

Brevard County, Florida, USA

A large amateur radio club north of boston, ma.

New Port Richey, Florida

Understanding the operational impact of Broadband over Power Line (BPL) on amateur radio communications is crucial for any radio amateur, especially given the potential for significant radio frequency interference (RFI). This ARRL tutorial delves into the technical aspects of BPL, explaining how the technology operates by transmitting data over existing electrical power lines, which can inadvertently radiate broadband noise across various amateur bands. My own field experience, particularly on the lower HF bands, has often involved tracking down noise sources that exhibit characteristics consistent with BPL emissions, making this a pertinent topic for maintaining clear receive conditions. The resource further details the specific FCC rules and regulations implemented to restrict BPL deployment. These regulations aim to protect licensed radio services, including amateur radio, from harmful interference. It outlines the technical standards and operational limitations imposed on BPL systems to minimize their impact on the electromagnetic spectrum, a critical aspect for contesters and DXers alike. For those engaged in RFI mitigation, the tutorial provides a foundational understanding of the regulatory framework that can be leveraged when addressing BPL-related interference issues. It serves as a valuable reference for hams seeking to comprehend the technical challenges and regulatory solutions surrounding this pervasive noise source.

The KnightLites QRP Association is a world wide fellowship of low power (QRP) amateur radio communications enthusiasts founded in 1996, and is coordinated through the efforts of a small group of radio amateurs located in the Research Triangle region of North Carolina in the United States.

Information on establishing an amateur radio station in japan

The Rocky Mount Amateur Telecommunications Assn. is an amateur radio society based in Rocky Mount, NC.

An International discussion group for D-STAR Digital Amateur Radio. Radios, Repeaters, Gateways, Internet, Setup, Mobile and Portable radios, Cloning Software, icf files,

This online database, called HAMLOG, can be used free of charge by any radio amateur worldwide.

FLMSG is a simple forms management editor for the amateur radio supported standard message formats. Form data can be transferred between computers either using standard internet email or via radio frequency broadcasts typically made by an amateur radio operator on your behalf.

Accessing this interface provides entry to one of the largest databases for amateur radio voice repeaters, encompassing over 8000 entries from more than 60 countries. The resource supports both desktop and mobile access, with a default display based on browser type, or forced via a "force" parameter (e.g., relais.dl3el.de?force=mobile). Users input a QTH-locator to find local repeater information. The database integrates FM-Funknetz servers and hotspots, potentially creating duplicate entries but ensuring new FM-Funknetz repeaters are immediately displayed. DMR repeater information, including status and talkgroup configurations, is sourced directly from DMR+ / ircDDB and Brandmeister systems, with real-time updates for active and default talkgroups. C4FM/Wires-X installations, particularly MMDVM-based gateways not listed in Yaesu's database, are identified through Brandmeister dashboard descriptions, marked with "W-x" or "W-x#MMDVM" for manual entries. D-Star repeater data from ircddb or QuadNet2 is also incorporated, with entries marked (i), (o), or (d) for manual additions. An APRS interface allows searching by callsign, using Sassan, DL3NCK's database, and offers a mobile-friendly, auto-refreshing display that follows an APRS station. Output data can be generated in GPX format for offline smartphone maps or CSV for spreadsheet applications. The database also attempts to determine valid repeater offsets based on IARU region and frequency, indicated by a "." after the frequency.

Thierry LOMBRY, ON4SKY, develops in depth and with original pictures the long history of amateur radio all through the world from 900 BC to date.

The Araucaria DX Group, based in Brazil, functions as an amateur radio club specializing in **DXpeditions**, **contesting**, and organizing various related events. The group actively sponsors contests and provides resources for DX enthusiasts. Its primary focus is on facilitating and participating in long-distance radio contacts and competitive operating events, contributing to the global amateur radio community. The group's activities include coordinating expeditions to rare DX entities, participating in major international contests, and fostering skill development among its members. By sponsoring events, the Araucaria DX Group supports the growth of amateur radio in South America, encouraging participation in competitive operating and promoting the pursuit of DX. The group's initiatives aim to enhance operational proficiency and expand the reach of amateur radio communications.

How to become an amateur radio ? by ON4SKY Review of general conditions to get licensed, examinations, regulation, CW, foreign calls, and more

Located in North Dakota

PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.

A gathering of Amateur Radio Operators in RV's near Quartzsite Arizona.

Website of the Chipola Amateur Radio Club and Jackson County ARES.

This resource, a blog from the Penang Amateur Radio Club (PARC), offers insights into various aspects of amateur radio in Malaysia. One post details monitoring Automatic Terminal Information Service (ATIS) on the 2m band, providing specific frequencies like 122.750 MHz AM for Butterworth and 126.400 MHz AM for Penang, along with sample aviation weather and operational data. Another entry critiques the lengthy and costly process of obtaining an amateur radio license in Malaysia, contrasting it with the more streamlined FCC licensing system in the United States, citing a 1-year wait and RM 414 (USD 125) for 10 years in Malaysia versus 3 weeks and USD 14 for 10 years in the US. The blog also covers internal club matters, such as the 2007 Annual General Meeting (AGM) attendance and council elections, highlighting member dissatisfaction with outdated newsletters and a call for "reformasi." Additionally, it presents local phonetic alphabets in Bahasa Malaysia and Chinese, and discusses monitoring AM broadcast bands for international stations like Voice of America on 1575 kHz and Zhong Yang Ren Min Guang Bo Dian Tai on 1134 kHz, offering alternatives to local 2m repeater chatter. The author, "firstclass," shares personal observations and criticisms regarding the Malaysian ham radio landscape.

This article describes an alternative to water as the cooling liquid for amateur radio vacuum tube power amplifiers. This cooling system is designed for adequate vacuum tube cooling, reasonable cost, and very low maintenance. By K8CU

The ANAN series SDRs are based on the OpenHPSDR open source designs, these are 4th generation radios and represent the state-of-the-art in current Amateur radio SDR design.

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

Radio Amateur Association of Greece

World of amateur radio by VK4NM

W8NWS is the Cincinnati, Ohio chapter of Skywarn.

Popular italian amateur radio forum by ARI Fidenza include a section dedicated to swap and sell

The official website of the Benelux DX-Club (BDXC), a club of radio listening amateurs, founded in November 1961

RSGB World Prefix Map - Radio Amateur's Map of the World

Stryker 10 Meter Amateur Radio trasceivers, antennas and accessories manufacturer

Snake River Amateur Radio Club

The ARRL Contest Results Database serves as a centralized repository for official scores and detailed breakdowns from numerous ARRL-sanctioned operating events. This resource typically features comprehensive listings of participants, their submitted logs, and final standings across different categories, modes, and bands. It allows hams to review their performance, compare results with other operators, and analyze contest trends over time, providing valuable insights into competitive amateur radio. Historically, the database has showcased the efforts of thousands of contesters, from single-operator entries to multi-operator, multi-transmitter stations. While the current status indicates scores are not immediately available, the database's primary function is to archive and present the outcomes of events like the ARRL DX Contest, Sweepstakes, and Field Day. This historical data is crucial for tracking individual progress, identifying top performers, and understanding the competitive landscape within the amateur radio community.

Basic site with links to amateur radio information and scanner info

More than 400 Dutch Hamradio links

Singapore Amateur Radio Transmitting Society

A non-profit public service and educational amateur radio organization specializing in advanced and experimental microwave communications.

First state amateur radio club

Amateur radio links to ui-view/aprs sites plus various other bits