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Learn about the practical design and construction of Yagi antennas for ham radio operators. This post explores the benefits of Yagi antennas in receiving and transmitting RF signals, concentrating signal energy in one direction for long-distance communication. Discover the theory behind Yagi antennae, the importance of element size and spacing, and the resources available for sizing and construction. Whether you're interested in OTA television or amateur radio communication, understanding Yagi antenna design can enhance your signal reception and transmission capabilities.

Opting for a visually appealing inverted L configuration, G4WIF anchors the End Fed Half Wave antenna to an old clothes line pole, seeking cost-effectiveness in their endeavor. Despite initial misconceptions about transformer components, a £7.95 investment in a T240-43 toroid and DIY mounting container resolves the issue. Reflecting on commercial alternatives, G4WIF's homemade solution proves both economical and sufficient for their amateur radio needs.

A collection of ham radio clip art royalty free. Additional amateur radio clip art can be found changing the search terms.

The HB9CV antenna calculator aids amateur radio enthusiasts in designing antennas for VHF and UHF bands. By inputting the working frequency, users can obtain crucial dimensions like dipole lengths and distances. The tool, based on the HFSS antenna model, provides data on impedance, VSWR, and gain, optimizing front/back radiation ratios. It includes tips for fine-tuning using a Г-matching balun and compensating capacitor, ensuring effective performance and minimal VSWR for enhanced radio communications and direction finding.

Ham racio clip art collection with free to use images. Additional amateur radio clip art can be found by changing the search term

Magnolia Amateur Radio Club serves the Starkville area in North Mississippi.

This antenna works on 17, 20, and 30 meters, with the best bandwidth on 20 meters. The bandwidth on 17 and 30 is quite small but usable. There is a 20 KHz bandwidth on 20 meters.

Meeting point of radio amateurs associations from around the world where introduce and share their activities and experiences. It is about giving voice to all those independent radio clubs of any country interested in exchanging knowledge with the others.

Ogemaw Arenac Amateur Radio Society located in the United States in northern Michigan

A QSL card is a written confirmation of a two-way radiocommunication between two amateur radio stations. The QSL card has been the most important part of Amateur Radio communications procedure for many years. QSL cards are used for awards and for just the pleasure of collecting the cards.

Online antenna parts store, providing many accessories for amateur radio antenna homebrewing. Boom joiners, aluminium parts, elements clamps, filters, ferrites, fasteners, plasti caps, dipole elements. Based in UL

Elkhorn Valley Amateur Radio Club Norfolk

Welkom op de website van de Friese Radio Amateur Groep. Hier vindt u allerlei informatie betreffende de FRAG.

NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks

Responsible for the operation of amateur radio repeaters GB3FM, GB3FN and GB3FX which are located near Farnham, Surrey in Southern England

This page provides instructions and links to download the latest APK version of APRSdroid and the Mobile HUD for ham radio operators. It also includes information on manually granting storage permissions for offline mapping files on Android 11+ devices. The page offers guidance on setting up and using offline maps in APRSdroid with OpenStreetMap.org. Various mapping options and providers are mentioned, along with a recommendation to support the author on Patreon. Overall, this resource aims to assist hams in effectively utilizing APRSdroid for their amateur radio activities.

Raleigh amateur radio society host the North Carolina QSO Party

3B7A Amateur Radio Expedition to St Brandon - April 5 to 17, 2018

The Raspberry PI 3+4 has proven itself as an amateur radio computer. Both at home as the main computer in the shack but also on the road. It is small, inexpensive and incredibly versatile. The operating system and the most important programs are available for free.

Presents the Utah Valley Amateur Radio Club (UVARC), K7UVA, detailing its organizational structure and activities within the amateur radio community. The club operates repeaters on 2 meters and 70 centimeters, providing local communication infrastructure for its members. UVARC engages in various ham radio activities, including field operations, technical discussions, and support for emergency communications. The club's website provides information on meeting schedules, upcoming events like _Field Day_ and _Winter Field Day_, and resources for new and experienced hams. It also lists contact information for club officers and details about their _ARRL_ affiliation, emphasizing their role in promoting amateur radio education and public service in the Utah Valley area.

The Launch Information Service and Amateur Television System, a club of Amateur Radio Operators Serving the Kennedy Space Center Community and Visitors

Digirig is an open-source integrated digital modes interface for amateur radio. As a differentiating feature, Digirig only requires a single USB connection to the computer with all the digital goodness packed in a single small enclosure. The internals include a USB hub, audio codec, a fully featured serial CAT (Computer Aided Transceiver) interface, and potentially other modules such as GPS receiver for time synchronization.

About LoRa, wireless communication technology designed to transmit data over long distances. LoRa provides a means for wireless data transmission over long distances with low power consumption. Practical applications of LoRa in amateur radio

MLog 0.8d is a freeware logging software designed for Windows operating systems (NT, 98, ME, 2000, XP) that facilitates the logging, management, and analysis of amateur radio QSOs. It features a customizable input mask for rapid contest logging, a robust search function for existing contacts, and immediate data storage in CSV format to prevent data loss. The software also includes a double-check mechanism against reference logs during callsign entry, integrated DXCC information, and a "magic field" for streamlined data input, all within a single-window interface. Key functionalities include graphical QSL card management via _QSL-Collection_, CW output through soundcard or PC speaker, and direct access to _Radio Amateur Callbook_ data. MLog supports transceiver control via _Ham Radio Deluxe_ URLs, offers a detailed world map with locator conversions, and can launch _VOACAP_ through _HamCap_. It provides extensive data analysis options for QSLs, _Locator_ large fields, _DOKs_, _DXCCs_, QSO counts, and user-defined contest evaluations, alongside flexible import/export capabilities for various log formats.

Otto enhances WSJT-X, the popular weak-signal digital modes program for amateur radio. It automates tasks like managing QSOs, prioritizing DX stations, replying to specific calls, and optimizing band usage. Otto works with a modified WSJT-X version (v2.7.0) to add advanced features such as directed CQs, automatic logging, and multi-stream replies. Its intuitive modes streamline operations, while safety measures ensure controlled transmissions. Ideal for DX enthusiasts, Otto improves efficiency and focus, making weak-signal operations more engaging and productive.

The Shiawassee Amateur Radio Association (SARA), operating under the call sign W8QQQ, serves as a non-profit amateur radio organization in lower central Michigan's Shiawassee County. Its primary objectives include public service, emergency communications, and advancing amateur radio through education and technical excellence. The club maintains a weekly _Skywarn_ 2m net on the N8VDH repeater at 147.02 MHz (+.6 MHz, 100 Hz tone) every Monday at 7:00 PM, actively seeking more local hams to participate. SARA also facilitates VE testing, with upcoming sessions like the one scheduled for April 23, 2026, at 6:30 P.M., requiring pre-registration by April 20. SARA holds monthly meetings at the James P. Capitan Building in Corunna, typically on the second Tuesday of each month at 7:00 PM local time, excluding December's social event. They offer Zoom meeting options for members unable to attend in person. Annual dues are $15.00, with a reduced rate for new licensees, making it a very low-cost club. The organization actively seeks more EMCOMM assistance from all Shiawassee County hams, not just club members, to bolster their ARPSC (ARES/RACES) capabilities, noting that only about **10** out of **200+** county hams are currently active in ARES. They also maintain a Google Group, "W8QQQ," for electronic notifications and club communications.

This tutorial provides detailed instructions for constructing a DIY magnetic loop antenna, ideal for amateur radio operators seeking efficient short wave communication. The design features a remote tuning system utilizing an Arduino and RC servo, making it suitable for indoor use where larger antennas cannot be installed. Magnetic loop antennas are compact and can operate effectively in confined spaces, but they do require careful handling due to the high voltages and currents they generate during operation. Users should possess the necessary technical skills to implement this project safely. The tutorial includes a comprehensive overview of the antenna's theory, specifications, and mechanical design. It outlines the components needed, including a Soviet-made variable capacitor and a digital RC servo for tuning. Safety precautions are emphasized, as the antenna can produce several kilovolts of voltage and high currents. The project is not certified for safety, and users are advised to proceed at their own risk. The tutorial also provides diagrams and explanations of the antenna's operation, making it a valuable resource for both beginners and experienced operators looking to enhance their setup.

Supporting a telescopic fiberglass antenna pole for ham radio operation. Rather than cumbersome methods like using angle iron or PVC pipes, author employs lightweight tent stakes, toggles, and paracord to secure the pole effectively. With careful knot tying and simple materials, he ensures rapid deployment and stability even in windy conditions, offering a practical solution for outdoor antenna setups.

A basic introductionto APRS on HF Bands for radioamateurs and how to setup an APRS tracker using Argent Data Systems T3 Mini TNC device, configured and assemble ready for portable operations.

The GSARC is one of the predominant amateur radio clubs in Northern Utah.

Official web site of the Ogden Amateur Radio Club Utah USA

This document provides a detailed guide on constructing and mounting a folded dipol for the 146 MHz frequency in a vertical configuration to be used in Yagi antennas. The step-by-step instructions and diagrams included make it easy for hams to build and set up this type of antenna. Understanding and implementing this design can enhance the performance of radio communication for Amateurs operating in the 2-meter band. Whether you are looking to improve your signal strength or experiment with antenna designs, this resource offers valuable insights and practical information.

This blog chronicles the development of an 80-meter vertical antenna for amateur radio operation. The author constructs a top-loaded vertical using fiberglass poles, achieving significant performance improvements over their previous end-fed wire antenna. Comparative testing using the Reverse Beacon Network and on-air contacts demonstrates 8-10 dB gain on the east coast. The project evolved to include 40-meter capability through a modified design featuring a four-wire vertical cage, loading coil, and strategic guying system. Despite challenges with signal wobble during windy conditions, the vertical consistently outperforms the end-fed wire, particularly for reaching distant stations during nighttime propagation.

QSLinfo.de is a QSL manager and address database for radio amateurs, maintained by Lothar, DL1SBF for more than 25 years already.

The Hamradio website of the VRZA Dutch

Amateur radio courses teach that in amplitude modulation, sidebands arise. This can be proven mathematically, and nowadays with an SDR one can easily see them.

HAM radio related clipart gallery, is a large collection of amateur radio gifs and jpeg images classified in several categories

You can use this tool to calculate the maidenhead square by entering the longitude and latitude.

The Murgas Amateur Radio Club is an ARRL Special Service Club in Wilkes-Barre, Pennsylvania, USA.

One primary function of this online utility is to convert plain text into _Morse code_, presenting the output in either a visual dit-dah sequence or as a downloadable MIDI file for auditory practice. The tool also provides the reverse capability, allowing operators to input Morse code and receive a decoded text translation. This bidirectional functionality supports both encoding messages for transmission practice and decoding received signals for improved copy. Operators can utilize the web interface for quick translations, making it accessible without software installation. The resource focuses on the fundamental aspects of CW communication, aiding in both learning and practical application of the code. Its design emphasizes simplicity and direct utility for amateur radio enthusiasts working with CW.

This article clarifies the roles of baluns, ununs, common mode chokes, line isolators, and impedance transformers in amateur radio. A balun decouples balanced antennas from unbalanced feed lines, preventing interference. Ununs serve a similar purpose for asymmetrical antennas. Common mode chokes and line isolators suppress common mode currents, reducing noise. Impedance transformers adjust antenna impedance to match feed lines but do not decouple or suppress common mode currents. Understanding these components is crucial for optimizing antenna performance and minimizing interference.

North Wales Amateur Radio Group (NWARG) was formed in December of 2019 by a group of radio amateurs that yearned for a local club that encouraged it’s membership to use all modes of amateur radio, to experiment with radio, to learn about radio and above all to be friendly and supportive of all of it’s members.

The Peilgruppe Neandertal, featured on Peilsport.de, actively promotes _Amateur Radio Direction Finding_ (ARDF), also known as fox hunting. This German group combines radio technology with outdoor sport, participating in regional and national ARDF events. Members access current ARDF schedules, competition results, and downloadable certificates directly from the site. The content highlights the adventurous spirit of ARDF, emphasizing the blend of technical skill and nature exploration. DL7ET and DR9P are noted callsigns associated with the group, indicating active participation from experienced operators. The site also covers related activities like Foxoring, a variation of ARDF that integrates orienteering with radio direction finding. This resource serves as a central hub for the Neandertal group's activities, documenting their involvement in a sport that challenges both physical endurance and radio proficiency.

This PDF document provides a comprehensive guide on building and using the Moxon Rectangle antenna design for hams. It covers the construction, setup, and tuning of this directional antenna, offering practical advice and tips for amateur radio operators looking to improve their signal reception and transmission capabilities. The guide includes diagrams, measurements, and step-by-step instructions to help hams successfully implement the Moxon Rectangle design for their radio communication needs.

The Story County Amateur Radio Club offers a wide variety of opportunities for persons interested in amateur radio. Among the yearly activities are programs on technical topics, radio operating activities, flea markets and sponsorship of ham radio classes.

1-watt 17-meter cw transmitter that was originally done about 10 years ago as a club project for RAMS, the Radio Amateur Megacycle Society. It uses a VXO, rather novel at the time. It also uses a bandpass filter at the output rather than the usual lowpass

Beaches On The Air is an award scheme for radio amateurs that encourages portable operation from beaches. You can participate from any country or region around the world. Our beach lists currently contain more than 30,000 beaches and aim to be as exhaustive and objective as possible, and are often based on official sources, such as environmental protection agencies.

CW_Player is a freeware Morse code training program designed for aspiring and experienced radio amateurs. It generates Morse characters, Q codes, abbreviations, and random text, offering 20 customizable lessons for learning Morse code. The software includes a quiz for knowledge testing, CW signal monitoring to decode morse code live, and the ability to create personalized local characters. It generates .wav files for playback, supports Windows features like copy-paste, and integrates easily with transceivers for on-air training. Ideal for beginners, instructors, and hobbyists, CW_Player boosts confidence in CW operations.

The building blocks for Amateur Radio, one concept at a time, collected since 2011 in several podcasts episodes you can listen online.

Amateur Radio goodies for not only the Shack, but also a range of outdoor/portable kit. Ferrite toroids, RTL SDR, Un-uns and Baluns for antennas and RF Filters. Based in the UK.