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Categories
- Technical Reference > AI Ham Radio
- Operating Modes > Aircraft scatter
- Software > Aircraft scatter
- Antennas > Theory > Antenna Gain
- Radio Equipment > Antenna Analyzers > Array Solutions AIM 4170D
- Ham Radio > Clubs > North America > USA > Hawaii
- Radio Equipment > HF YAGI Antennas > Hy-Gain TH3JR
- Internet and Radio > Mailing Lists
- Ham Radio > Clubs > North America > USA > Maine
- Antennas > Morgain
- Operating Aids
- Shopping and Services > Radio Equipment Repair
- Radio Scanning > RailRoad
- Antennas > Repair and Maintenance
- Shopping and Services > Regional > Europe > Spain
- Ham Radio > Clubs > Europe > Spain
- Ham Radio > Regional > Ukraine
- Ham Radio > Clubs > Europe > Ukraine
- Software > Morse Code Training
- Antique Radios > Repair and Restoration
- Technical Reference > Repeater > Repeater Maintenance
- DX Resources > Beacons > 10 GHz Beacons
- DX Resources > DX Peditions > 2010 DXpeditions
- DX Resources > DX Peditions > 2015 DXpeditions
- DX Resources > DX Peditions > 2016 DXpeditions
- DX Resources > DX Peditions > 2017 DXpeditions
- DX Resources > DX Peditions > 2018 DXpeditions
- DX Resources > DX Peditions > 2022 DXpeditions
- DX Resources > DX Peditions > 2024 DXpeditions
- DX Resources > DX Peditions > 2025 DXpeditions
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West mountain radio, Useful electronic hobbyist products, RigBlaster and RIG Runners products, Waukesha, WI.
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The Ukrainian Contest Club (UCC) The Ukrainian Amateur Radio League (UARL)
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The main function of the Ugly Balun is to help eliminate rf currents from flowing on the outside of coaxial cable using the principle of choke action.
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This page is dedicated to amassing information on the Tentec/Globe Wireless RX-321/RX321
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Repairing and restoring a Yaesu FL-2100Z amplifier
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A project for a 50 MHz moxon rectangle antenna
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The Antique Radio Repair Center at For Your Listening Pleasure has been providing quality antique radioold zenith, zenith.gif repair and restorations for well over 20 years.
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Article on tubes and their usage in power amplifiers design. Explain failures of tube in RF power amplifiers, a common problem in the SB-220 SB-221, TL-922 and other amplifiers.
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Repairt a Heathkit SB-220 Linear Amplifier with a bad Plate Voltage meter
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Firsts pictures of Icom IC-9100 taken at Tokyo HamFair 2009
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Kenwood Ibérica's online presence details their extensive product line, including the NEXEDGE NXDN and DMR digital radio systems, alongside traditional analog offerings. The site categorizes transceivers by mode, such as HF / Todo Modo (All Mode), and portable/mobile VHF/UHF units, catering to various amateur radio operating preferences. This includes specific accessories like batteries, chargers, microphones, and programming cables, essential for maintaining and customizing radio equipment. The Spanish portal also highlights Kenwood's broader electronics portfolio, extending beyond amateur radio. This encompasses car electronics, featuring navigation and multimedia systems, as well as marine receivers and speakers. The product range covers everything from CD and CD-less car receivers to power amplifiers and DashCam/RearCam solutions, demonstrating the brand's diverse market reach. Beyond communications gear, the site presents home audio systems, including all-in-one receivers and portable party speakers. This breadth of offerings underscores Kenwood's long-standing presence in both the consumer electronics and two-way radio sectors, providing a centralized resource for product information and support.
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Repair & Restoration information in UK
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Examines the historical role of telegraphy within Canadian railway operations, detailing the evolution of communication systems crucial for train dispatch and coordination. It covers the technical substance of railway telegraphy, including equipment, operational procedures, and the personnel involved, such as agents and operators. The resource provides insights into the **F59PH locomotive** history, development, and components, alongside diagrams of various parts like antennae and traction motors. The content also explores the practical application of these systems by documenting specific railway events, such as the CPR Galt Sub operations from 1895-1971 and GO Transit's operational history. It includes photo galleries, schematics, and diagrams of locomotives and cab cars, offering a visual and technical comparison of different railway equipment. The site also features information on **GO Transit** rolling stock, including MP40s and commuter coaches, providing a historical context for railway communication and transportation.
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Reviews Summary for Solarcon A-99
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Look for free manuals (download) in amongst paid offerings for test equipment manuals. The freebies page also has mostly ham material. We do also sell major ham collections at pretty much close to our production and distribution costs.
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The EACW Club, a Spanish amateur radio organization, focuses primarily on the promotion and practice of _Morse code_ (CW) within the amateur community. Members engage in various CW-centric activities, including contests and on-air events, fostering skill development and camaraderie among CW operators. The club provides a platform for hams to connect, exchange knowledge, and participate in specialized CW operations, contributing to the preservation and advancement of this fundamental mode. Operating as a specialized club, EACW supports its members in achieving proficiency in CW communication. Its initiatives often include educational resources and opportunities for practical application, such as CW nets and QRP operations. The club's emphasis on CW helps maintain a vibrant community for operators who value the efficiency and challenge of this mode, particularly in DXing and contesting scenarios. EACW Club activities contribute to a collective **150+** annual CW QSOs logged by its members, reflecting active participation and a strong commitment to the mode. The club also organizes an annual CW sprint, attracting participants from across Europe, with typical participation exceeding **50** unique callsigns.
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Improve ethical conduct. Unpleasant, uncivil, impolite behavior of our fellow hams reduces the enjoyment of our hobby. What You Can Do to Improve DXEtiquette
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The article details a specific method for performing maintenance on a crank-up tower, focusing on cable and rotator replacement without a full power pulldown. It outlines the necessary equipment, including a 2-section extension ladder with a horn attachment and a two-piece, 6-foot steel pipe, specifying a 1 1/4-inch diameter. The procedure involves lowering tower sections onto the internal pipe to slacken cables, allowing for their removal and replacement, and also describes how to replace the rotator while the tower remains upright. Key steps involve using the pipe to support tower sections, enabling access to the cables and bearings. The author, N5AR, emphasizes safety by instructing the reader to remain on the ladder at all times, rather than climbing the tower itself. The process is presented as manageable for a single operator, with the author having successfully completed the task on a _UST TX472_ tower. Specific tools mentioned include Allen wrenches and end wrenches for cable ends and bearing bolts. The method provides a practical approach for tower upkeep, minimizing the complexity often associated with such tasks and allowing for maintenance of components like cable pulleys and their bearings.
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VHF Power amplifier VLA 200 english manual
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An high gain long yagi antenna, seven elements, for six meters band
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Installing a classic G5RV Antenna in Slopinv-V mode by AI4WM
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Reviews of the kenwood TS-940S HF Transceiver
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DK5AI amateur radio station active on EME and SSTV.
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These photos illustrate the basic steps in making a perfect solder joint on a p.c.b
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Shortwave listeners and amateur radio operators interested in _numbers stations_ can engage with this mailing list, which serves as a platform for discussing the enigmatic transmissions. The resource facilitates the exchange of information regarding these unusual broadcasts, often associated with intelligence agencies, by allowing members to share observations, decode attempts, and theories. It provides a community space for those who monitor the HF spectrum for these unique, often automated, voice or digital signals. Participation on the list enables members to contribute to a collective understanding of numbers station activity, including changes in frequencies, broadcast schedules, and message formats. While specific technical analysis or signal processing techniques are discussed by members, the primary function is information sharing. The list is administered by csmolinski at blackcatsystems.com, and prior postings are archived for reference, allowing new members to review historical discussions and data.
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eham reviews of the Yaesu FT-9000
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Heathkit SB 220 mods, replacing the Zener ZD1, replacing the plate-voltage voltage divider, adding a keying circuit for solid state transceivers
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Aspiring radio amateurs in the United Kingdom preparing for their licensing examinations can utilize this resource, which offers mock exam questions covering the Foundation, Intermediate, and Advanced license levels. The site provides access to question pools, including associated images, designed for use with _Moodle_ learning management systems requiring PHP and MySQL. These question sets are available for non-commercial deployment by UK amateur radio clubs and organizations, facilitating local training initiatives. The original online mock test service ceased operations in August 2018 due to maintenance overhead. The current iteration serves as a repository, allowing other organizations to download the question databases. This approach enables broader access to the exam preparation material, supporting the UK amateur radio community in achieving licensing qualifications. The resource does not offer direct online testing but directs users to other sites, such as _Radio Tutor_, that implement these question banks.
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Specializing in vintage and antique speaker repair,recone and restoration.
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Kenwood TS-480HX Resources at eham.net
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Bencher Tech Notes: Selecting your next yagi
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An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles, is a high gain directional antenna, designed for medium and long range communications.
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The Hualapai Amateur Radio Club is located in Kingman, Mohave County, Arizona, USA (DM25xf).
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Archive of yaesu ft-1000MP digests since january 2001
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GAP Titan DX 10 15 20 40 meter performance tests by AA3RL
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Rail Radio Communication Feeds broadcasted from all over the United States and beyond.
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This site is dedicated to the repair, restoration, preservation and sale of old collectable radios, both bakelite and wood.
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This resource examines the appropriate use of /M (mobile) and /P (portable) suffixes in amateur radio callsigns, specifically within the context of the UK Amateur Radio Licence. It addresses common ambiguities and challenges in determining operational status, such as operating from a summit or while walking. The discussion references the licence version in force before February 21, 2024, noting that while current regulations recommend but do not specify suffix use, the prior definitions remain relevant for understanding common practice. The content dissects key sections of the licence, including "Notes to the licence" (d)(i-iii) which outlines /A, /P, and /M usage based on location, and "Temporary Location" (jj) which defines /P operations. It also clarifies "Mobile" (17(1)(x)) as operating in or on a vehicle, on a pedestrian, or on a vessel on inland waters. The author provides examples and recommendations for choosing between /M and /P when both might apply, such as when operating from a parked car with a deployed mast or using a handheld on a summit. Historical notes from M1MAJ, G8ADD, and G6MZX are included, tracing the evolution of suffix rules from pre-BR68 days to the 1977 licence version. These historical perspectives highlight how past regulations have influenced current interpretations and persistent myths regarding /M usage. The resource emphasizes making an informed choice based on the licence and communicating the station's operational circumstances clearly.
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Discussion at eham about wire size used in wire antennas, and how it affects the gain of the antenna
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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.
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How to repair a FT1000MP front end, damaged from too much neighbouring RF during contesting
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Alternate means of raising your tower with readily available boat and engine hoists. Examples of working tower hoists with links to manufacturers.
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Eham user's review on the Heathkit SB-200 HF amp
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The HyGain LJ-153BA a monoband 3 element Yagi, designed for the 15 m band 21.00 - 21.45 MHz
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Windows based programmer for the VX-170. Programming software for the yaesu VX-170