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Demonstrates the essential steps for winding **toroidal cores**, a fundamental skill for amateur radio operators engaged in homebrewing and kit building. It addresses the critical aspects of selecting the correct core material and wire gauge, emphasizing the importance of precise turn counting and consistent winding tension to ensure optimal circuit performance. The resource details methods for preparing the wire, including techniques for safely removing enamel insulation from leads using flame, sandpaper, or a solder pot, and provides guidance on tinning the exposed wire. Explains the process of mounting the wound toroid onto a printed circuit board, highlighting the need for careful lead placement and secure soldering to prevent shorts and ensure mechanical stability. It also offers a practical formula for calculating the required wire length based on the desired number of turns and the specific **toroid** size, referencing common core types like T-50 and FT-240. The guide stresses the importance of verifying the inductance of the wound component, often using an inductance meter, to confirm it matches design specifications. Provides practical tips for handling multi-filar windings and managing short lead lengths, which can be particularly challenging. It underscores the necessity of meticulous attention to detail throughout the winding and installation process to achieve reliable and efficient RF circuits.

Long Waves, Short Antennas, designing antennas for MF and LF communications

Radio / electronics repair ICOM authorized service center

Features and specifications for Yaesu FT 857D

Motorola dealer , garmin GPS , cb, HAM radio , radio rental ,portofoon verhuur , walkie talkie located in Amsterdam , Holland

What amateur radio operatos do. What kind of activities, events and operaration they are involved.

An 87ft inverted L portable antenna working on 80 40 30 20 15 meters band

What Amateur Radio (ham radio) is. How to get started in ham radio. License requirements. Where to find instructions.

This is from a posting on the BARK PBBS Keith, WB2VUO

Ham Radio Club in the Philippines

Ham Radio Android Apps to displays your current QTH locator on Google Maps using the GPS or WiFi / network location.

The half wave dipole antenna is a simple and practical antenna model that consists of a half wavelength long centre fed conductor.

Amateur Prefix Maps by UT0UM updated with ARRL DXCC and ITU changes, available for download in PDF

A Study of Amateur Radio Gender Demographics. How many ham radio operators in the usa ? Estimated Number of Hams in Each State, by Gender

VQLog 3.1 - 782 is a shareware logbook program designed for Windows operating systems (95, 98, NT, 2000, ME, XP, Vista, 7, 10, or later), supporting resolutions of 800x600 or higher. It can also operate on macOS and Linux via virtualization software like Virtual PC for MAC, Oracle VirtualBox, or VMware. The software facilitates QSO access by date, callsign, prefix, square, DXCC, and other parameters, offering robust import capabilities for ADIF, Cabrillo, and ASCII files from various contest and logbook programs. Key features include comprehensive award tracking for DXCC, WAZ, WAC, WPX, WAS, IOTA, TPEA, DIE, VUCC, 100EACW, and up to 30 user-defined awards. It generates customizable summaries and graphical statistics for QSO activity, DX contests, Most Wanted Squares (MWS), propagation openings, and prefixes. VQLog supports DX-Spot reception and processing from DX-Cluster and PSK-Reporter with programmable warnings, integrates with callbook services like QRZ.COM and Buckmaster's CD, and offers online lookup. Electronic QSL and log upload support extends to LoTW, eQSL.cc, Clublog, and DXMAPS, with real-time updates for online logs. The program provides extended QSO information for VHF-DXers, including separate TX/RX frequencies, start/end times, propagation modes, and specific entry fields for MS, EME, and Tropo. CAT support for rig control and interfaces with ARSWIN and PstRotator for azimuth/elevation control are also included.

Accessing current contact information for amateur radio operators is crucial for QSLing, award tracking, and general communication within the Ham Radio community. This online tool provides a specialized callbook service, focusing exclusively on Croatian (9A) amateur radio operators who maintain active membership with the Hrvatski Radioamaterski Savez (HRS). It functions as a centralized database, allowing users to look up specific 9A call signs and retrieve associated information, primarily for verification purposes within the Croatian amateur radio scene. The utility of such a focused callbook lies in its direct relevance to local and regional operating activities, including contests, nets, and emergency communications within Croatia. While not a global callbook like QRZ.com or HamQTH, it serves a vital role for Croatian hams and those seeking to confirm contacts with 9A stations, ensuring data accuracy by linking entries directly to HRS membership status. This targeted approach streamlines the process of verifying Croatian amateur radio licenses and membership details.

Simple program for ham radio Uses AX25 support built in Linux kernel, works in X11 graphics environment.

A simple current balun for the FM broadcast band

An homebrew crossed Yagi antenna for two meters band based on DK72B design with pictures, detailed description and tricks by Barry Zarucki M0DGQ

Ham Radio On line shop, kenwood yaesu icom alincon ten tec dealer, antenna rotors, antennas, antenna mounts, microphones, antenna mas, receivers and scanners based in Essex England Uk

IC706 Specifications by universal radio inc

Functional, easy, and cheap, all good Ham Radio characteristics by Terry Fletcher, WA0ITP

Managing extensive QSO data efficiently requires robust logging software capable of handling diverse operational needs, from casual ragchewing to competitive contesting. HAM OFFICE provides a comprehensive solution for amateur radio operators, integrating essential logging functionalities with advanced features for analysis and award tracking. It supports detailed QSO entry, offers various display and evaluation options, and includes helpful functions to guide users through its interface, ensuring a smooth workflow for both new and experienced hams. The software's design emphasizes user-friendliness while incorporating a wide array of functions, making it suitable for different screen sizes and operating preferences. It features innovative databases for enhanced data protection, improved handling despite increased functionality, and significant speed gains from new background calculations. The program runs stably on Windows XP through 11 (32 and 64 bit) and offers a mobile app for QSO entry and analysis on _tablet PCs_ and smartphones. HAM OFFICE is widely adopted, with an estimated **80%** of German contests logged using the software, and it is utilized by amateurs in **58** DXCC entities. The program supports various aspects of amateur radio, including contest logging, detailed evaluations, and integration with internet resources and shack equipment. It also provides specific support for new license classes like DN9 and actively supports initiatives such as the recognition of _Morse Telegraphy_ as a cultural heritage.

KJI Electronics, Inc. has been serving the Amateur Radio Community since 1978. An authorized Icom and Kenwood dealer, we carry many other manufacturers of HAM radio equipment. Located in Caldwell NJ, we service the radios we sell.

The OK DX Club website serves as the home site for the OK DX Club, providing a variety of information such as hot news, propagation details, maps, QSL managers, software recommendations, useful links, and membership information. The site caters to amateur radio operators interested in DXing and offers a platform to share experiences, learn from fellow hams, and explore the world of DXing. The content is regularly updated to provide the latest information and resources for the amateur radio community.

A vertical dipole for 10, 15, 20 and 40 meters made adapting two Hustler Model 6-BTV antennas by w6sdo

A site exclusively meant for the novice. Find all the information necessary to become an amateur radio operator! More India specific information.

A restored version of the original CQ DX Zones of the world

Add-in module to Microsoft Excel, contains a set of radio amateur relevant special functions: DistSphericLocator(Loc1; Loc2) Calculates the spheric earth model distance between two locators [km] DirSphericLocator(Loc1; Loc2) Calculates the spheric earth model direction from Loc1 to Loc2

How to make your ham radio system mobilemany ham radio operators carry radios for fun, safety and public service activities. radios for both vhf and hf frequencies can easily be installed in vehicles.

A copper pipe Hentenna for 144 MHz. The Hentenna, a compact, high-gain loop antenna developed in Japan in the 1970s, offers approximately 5.1 dBd gain, comparable to a three-element Yagi. Adapted for 2 meters, it is crafted from copper pipe for simplicity, affordability, and broadband performance. Requiring no feed-point tuning, its construction involves soldering standard copper fittings. Installation demands non-conductive materials to minimize signal disruption. Versatile for vertical or horizontal polarization, it is ideal for FM, repeater, SSB, or CW applications. This design emphasizes practicality and performance for amateur radio enthusiasts

Project plan for a 4 element yagi beam for 50 Mhz

CB and ham radio dealer in spain

Wireless radios from all eras Operating ham station - W1FGM Rivals museum at ARRL Hq.

QRZCQ.com provides a centralized online platform for amateur radio operators, integrating a global callsign database with DX Cluster functionality. The service features real-time DX spotting, filtering capabilities for specific bands (e.g., 160m, 80m, 40m, 20m, 15m, 10m), and specialized filters for awards like IOTA, SOTA, WWFF, and QRP activity. It also includes a logbook, QSL manager lookup, contest calendar, and various ham radio articles and news feeds, supporting a wide range of operating activities and information retrieval. The platform aggregates data from multiple sources, offering a dynamic view of on-air activity and callsign information. Users can register for free to access additional services, including a personal logbook, buddy lists, and chat features, fostering community interaction among over 198,600 registered users. The DX Cluster displays recent spots with frequency, DX call, spotter, and remarks, covering bands from VLF to VHF. Beyond DX spotting, the site provides resources such as repeater directories, propagation information, and a swapmeet, making it a multi-faceted tool for both casual browsing and serious DXing or contesting. The service also highlights active users, latest news, articles, and videos, keeping the content fresh and relevant.

Since 1922 Tampa's largest Ham organization. Dedicated to hams by hams. Classes in theory, code, and experimentation are a regular event.

QSL and Label printing addon to Ham Radio Deluxe by IW1QLH

Article on PC to radio interfacing by Paul Umbdenstock, WA1VOA

Operating Slow Scan Television (SSTV) on Apple macOS systems requires specialized software to encode and decode images for transmission over amateur radio frequencies. MultiScan 3B was an application designed for this purpose, enabling Mac users to engage in SSTV communications. It supported various popular SSTV modes, including Robot Black & Color, Scottie, Martin, PD modes (P3, P5, P7), and AVT, catering to a wide range of operational preferences and compatibility requirements within the SSTV community. The software's capabilities extended to both transmitting and receiving pictures, offering flexibility in how images were processed. Users could select regular, narrow, QRM, and narrow+QRM modes, allowing for adaptation to different band conditions and signal environments. This feature was particularly useful for mitigating interference and optimizing image quality during transmissions on HF bands. MultiScan 3B was built to run on Mac OS X 10.6 and later versions, providing a dedicated solution for Mac users interested in this classic digital mode. Its support for multiple modes and operational settings made it a versatile tool for SSTV enthusiasts.

Ham radio dealer in Valencia Spain

The IndyScan website functions as a personal blog, documenting the author's experiences across various aspects of daily life, including travel, culinary adventures, and media consumption. Content frequently details personal trips, dining experiences in Indiana and other locations, and reviews of books, television shows, and products. The site also includes reflections on local events and personal purchases, providing a snapshot of the author's interests and activities. While the site's primary focus is personal narrative, it occasionally touches upon amateur radio, such as mentions of operating during a trip to Brookville, Indiana, or capturing a weather fax via shortwave radio. These ham radio-related entries are integrated within broader lifestyle updates, offering a glimpse into the author's engagement with the hobby rather than providing technical guides or detailed operational information. The resource serves as a personal journal, not a dedicated technical reference for amateur radio.

CB, Hamradio informations & more ...

The sun can power your Ham station and a whole lot more. Using solar power panel with a 12 volt battery can permit you to operate autonomously even for several hours without interruption.

Understanding high-frequency (HF) skywave propagation is crucial for amateur radio operators seeking to optimize long-distance communications. This resource details the fundamental principles of HF radio propagation, including the properties of electromagnetic waves, the characteristics of various HF bands, and distinct propagation modes such as skywave, ground wave, and line-of-sight. It places significant emphasis on the ionosphere's pivotal role in refracting HF waves, explaining how solar activity directly influences ionospheric conditions and, consequently, propagation paths. The resource integrates real-time monitoring capabilities, featuring dynamic charts and data from DX clusters, WSPRnet, and the Reverse Beacon Network, which allow users to track current band activity and propagation conditions globally. It also delves into advanced topics like Near Vertical Incidence Skywave (NVIS) and gray line propagation, providing insights into ionosonde data and various propagation prediction models. The site presents a detailed analysis of solar-terrestrial interactions, geomagnetic indices, and space weather phenomena, illustrating their direct impact on HF communication reliability. Practical tools and applications are highlighted, including real-time QSO planners, online Maximum Usable Frequency (MUF) maps, and alerts for solar flares or geomagnetic storms. The guide systematically breaks down complex concepts into accessible chapters, offering a structured approach to learning about ionospheric regions, diurnal and seasonal effects, and the interpretation of propagation indicators like foF2, MUF, and Lowest Usable Frequency (LUF). This makes it a robust reference for hams aiming to deepen their technical understanding and improve operational effectiveness.

Who's who in ham radio

Australia's largest online database of VK email & URL's. Home of the AAR Netring and VK Classifieds. Repeater lists, maps and more...

Planning and modelling Delta Loop antennas for all the ham radio HF bands include calculated wire lengths at each mid-band

Ferrite Toroids. Iron Powder Toroids. Ferrite Beads. Split Cores. Cable clamp-ons. Balun Cores. W2FMI Baluns and Ununs. Inductive components for EMI Suppression and RFI Suppresion, power supplies, HAM radio.

Solves antenna matching problem with two phased antennas. Stacked rotary beams are popular. However, connecting two 50 Ohm antennas together presents some problems.

For radio amateurs seeking compact and efficient antenna solutions, particularly for restricted spaces or noise reduction, HF loop antennas present a viable option. This resource compiles several articles from the ARRL, detailing the theory, design considerations, and practical construction of various loop configurations. Topics include small transmitting loops, receiving loops, and multi-band designs, often emphasizing their performance characteristics such as directivity, bandwidth, and impedance matching. The collected articles provide insights into the comparative performance of different loop geometries, such as circular versus square loops, and discuss the impact of conductor size and tuning methods on efficiency. Practical applications are explored, including their use in portable operations, stealth installations, and urban environments where noise mitigation is critical. The content often includes construction diagrams, parts lists, and performance data derived from modeling or field tests, enabling hams to replicate or adapt the designs for their specific operating conditions.