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Notes on how to build an inverted V wire antenna with lenghts for all HF bands from 160 mtrs to 10 mtrs

Receive and listen to FM and AM radio broadcasts on your browser or ChromeBook using an RTL2832U-based USB digital TV tuner.

Monthly Amateur radio DX Peditions and Contest calendar at HamRadioWeb

21 February to 6 March 2013 XT2TT Italian Dxpedition Team will be in Burkina Faso Online Log XT2TT and Live Stream

Magnetic Loop antenna for 20 to 80 meters band using home made butterfly condensator kit

Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.

Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019

Presents the Holy Cluster, a contemporary DX cluster service offering real-time amateur radio spot data. This platform integrates a dynamic graphical map to visualize current contacts, enhancing situational awareness for DXers and contesters. Developed by an Israeli group of developers and supported by the Israeli Association of Radio Communication (IARC), the Holy Cluster aggregates DX spots from various sources, including traditional telnet clusters, the Reverse Beacon Network (RBN), and PSK Reporter, providing a comprehensive view of band activity. The cluster's design emphasizes a user-friendly interface for monitoring DX activity across multiple bands, including dedicated support for JOTA (Jamboree On The Air) operations. Its aggregation capabilities allow operators to quickly identify propagation openings and active stations, streamlining the process of making two-way radio contacts. The integration of RBN and PSK Reporter data offers insights into propagation conditions and station reception reports, which can be invaluable for optimizing antenna direction and operating strategies.

Online websdr receiver based in Rome Italy provides a nice user web interface and receiver most of the amateur radio HF bands

This online WebSDR is located near Corinne, Utah, has coverage on all U.S. amateur HF, MF and LF bands, 2 meters, the bottom 1 MHz of 6 meters, and several shortwave broadcast bands.

Homebrew Tubes/LDMOS amplifiers, Antenna, accessories, adventures in 9Q, DX, UN missions, Contests, and more.

T93Y WEB page with details from Contest DXpeditions to Cyprus and United Arab Emirates

21 28 and 50MHz three bands whip antenna by JA1HWO

Online Log and dx info for Southern Line Islands DXpedition 2010

Use these forms to manually enter log data to produce a Cabrillo file and submit it to a contest sponsor. The forms are designed for contesters who used paper logging or logging software that doesn't produce a Cabrillo file.

A simple free running oscillator oscillating at the receiver\'s IF (intermediate frequency) beats with the incoming signals in either CW or SSB and the resultant audio frequency goes to the AF amplifier.

This WebSDR, hosted at Goonhilly Earth Station in Cornwall, enables you to listen to the Qatar OSCAR-100 Narrow band transponder onboard the Es'hail-2 satellite.

T32 DX peditions logs, T32CI T32MI T32SI T32VI

dedicated to ATV ham radio operations, mainly in italian

Comitato Regionale Veneto della Federazione Italiana CB - Servizio Emergenza Radio.

Funny photos of IQ7R contest team and dx-spedition

West St. Louis County Police and Fire Live Audio Feed

W1MX, the MIT Radio Society, stands as America's oldest college amateur station, providing a vibrant hub for MIT students, faculty, and staff interested in RF engineering, telecommunications, and radio science. The club, formerly known as 1XM, fosters a growing membership and hosts regular business meetings on the first Tuesday of each month at 7:30 PM ET, alongside weekly social gatherings every Friday at 7:00 PM ET in room 50-358. No prior radio experience is necessary to participate, and interested students are encouraged to attend a social meeting for a station tour and to learn about typical club activities. The society emphasizes experiential learning opportunities, actively seeking support to build a new and improved station at MIT. The club maintains a consistent presence in 50-358 during semesters and IAP, often extending into the summer, with the exception of club trips. Members can also access a dedicated webpage displaying the last 30 days of door activity, updating every five minutes, while a public frame shows the current door status and recent activity.

The GB7MBC resource provides real-time DX spotting information through both web and **telnet cluster** interfaces, catering to amateur radio operators seeking immediate updates on propagation and station activity. It integrates features such as a **JOTA cluster**, RBN (Reverse Beacon Network) data, and PSK Reporter spots, offering a comprehensive view of current band conditions and DX opportunities across various modes and frequencies. The platform also includes a forum for community interaction and detailed DX cluster statistics, allowing users to analyze historical spotting data. Users can access the cluster via a standard web browser or through a telnet client, providing flexibility for different operating environments. The inclusion of RBN and PSK Reporter data enriches the spotting experience by cross-referencing reported signals with automated reception reports, enhancing the reliability and utility of the DX information. This combination of real-time data, community features, and statistical analysis makes it a practical tool for DXers and contesters.

The South Alabama Radio Club is located in Covington County, Alabama in grid square EM61

Personal web pages with logs, information on learning cw and operating in CT-land.

KB9AMG's Top WSPR Spots presents a focused online tool for monitoring **2-way WSPR reports**, specifically detailing propagation data from February 2026 through March 2026. This resource aggregates _WSPRnet_ data, allowing radio amateurs to observe weak signal propagation conditions across various bands. The interface is straightforward, presenting callsigns, frequencies, signal-to-noise ratios, and distances for each reported contact, which is crucial for understanding current band openings and signal paths. The utility of this WSPR spotter lies in its ability to quickly visualize global propagation. Users can identify active stations and assess signal viability over long distances, with reports often showing contacts spanning thousands of kilometers. For instance, a typical WSPR report might indicate a signal from Europe reaching North America with a _SNR_ of -25 dB, demonstrating effective low-power communication. This data is invaluable for planning DX operations or evaluating antenna performance under actual propagation conditions.

ARRL Resources about Lightning Protection for the amateur radio station

The Indianapolis Police Scanner on Broadcastify allows users to listen to live police radio transmissions from Indianapolis. The website provides access to emergency communications and public safety broadcasts.

Analyzing digital mode contacts, particularly those made with _WSJT-X_, often requires tools beyond the native logging capabilities to identify duplicates or perform deeper statistical analysis. This utility addresses that need by providing an external application that processes the _WSJT-X_ log file, typically _wsjtx_log.adi_, to extract and present contact data in a more flexible format. It demonstrates how to parse ADIF data from a popular digital mode program, offering insights into contact patterns and potential logging errors. The software facilitates the identification of duplicate QSOs, a critical function for contesters and DXers aiming for unique contacts. It also enables further analysis of the log data, which can be useful for tracking band slots, modes, and specific callsigns over time. The application provides a practical example of how external tools can augment the functionality of primary logging software, allowing for custom data manipulation and reporting that might not be available within the original program.

T97M WEB Page dedicated to DXpedition to Cyprus and Kuwait November 1997.

German ham radio portal

Amateur radio repeater scanner at Pomona California

Operational mode QRPp QRSS Running as an MEPT Manned Experimental Propagation Transmitter

Beacon OK0EV works daily from 6:00AM to 8:00PM local time in 160m band from the Czech Republic.

715 days, 6 hours, 58 minutes, and 29 seconds of uptime are reported for the YSFReflector-Dashboard by DG9VH, which monitors the IT C4FM SUD / ITALY-SUD reflector. This dashboard, compiled on December 1, 2017, provides real-time operational statistics for the reflector, including system information, disk usage, and connected YSFGateways. The dashboard also features a "Last Heard List" and an "All Heard List," displaying callsigns, durations, and timestamps (Europe/Rome) of stations active on the reflector. These lists offer a quick overview of recent activity, which can be useful for tracking **C4FM** traffic. While the resource is titled "IZ7AUH-6 DX Web Cluster," the primary content displayed is a **YSFReflector** dashboard. This suggests the platform might serve a dual purpose, offering both traditional DX cluster services and monitoring for Yaesu System Fusion reflectors.

SWL from Israel with lots of IOTA informations

Facilitates logging of amateur radio contacts directly within a web browser, enabling seamless operation across various devices including Windows, macOS, Linux, iOS, and Android. This web-based application stores all log data securely in the cloud, providing accessibility from any internet-connected location. It supports importing existing log data via CSV files, with future plans for _ADIF_ file import, and offers a robust QSL card generation feature, producing print-ready PDF files in standard 148mm x 100mm dimensions. The platform integrates with Japanese government databases to automatically populate callsign-related information such as station location and license issue dates, streamlining data entry. It also assists with JCC/JCG searches for accurate QTH logging. The service leverages SSL encryption for all communications and benefits from security oversight by certified information security professionals. Users can register using email/password or existing Facebook/Google accounts, and the beta version is currently available for free. The system has processed over **5,297,881** logs, with **28,369** logs recorded in the past 24 hours.

Listen to Cleveland Police Dispatch and Metro Housing Authority via the Live Audio Feed Web Player

Calculate how to set call signs

Airband Frequencies collection in french PDF files by SWL FE10262

List of Ham Radio Emergency Items. A list developed to give a starting point that the user can develop his or her own list if items from

A page describing how to home made a custom 9:1 balun for a common portable wire antenna. The author suggest to use 4C65 or FT140-61 toroids instead of the common Amidon T200-2

Hawaii-Californian Tropo ducting reports

Build you own RF probe, measure the level of RF voltage present at a particular point.

SSTV & ATV "only" Webring. Many members world wide.

Exciting site vith many Links & HamStuff

The Ham Cram method is designed to prepare you for the FCC tests in the shortest time possible giving you the highest level of confidence. It's totally free.

G0HWC details and HTML files with images to build yourself a Ham Radio website. Get your Ham Web Site on the internet for free