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- Technical Reference > AI Ham Radio
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Sponsors of WAVE, WACAN awards
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Big Rapids is located in central Michigan and is home to about 11,000. Big Rapids is also home to Ferris State University and the Big Rapids Area Amateur Radio Club
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G2XV G8EVY 1919 - 2010 Promoting Amateur Radio in Cambridge for over 90 years
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The radio beacon DI2AM on museum-ship in Rostock Schmarl
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Drake Radio Service & Repair, Refurbishing Services
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Milton Amateur Radio Club is located in Milton, Florida about 20 miles east of Pensacola, Florida. Drop by and visit our web site.
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A blog by W1REI dedicated to ham radio hobby
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Established in 1938 & Celebrating 72 years of Amateur Radio in Gippsland & Latrobe Valley
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Radioamateurs Grimbergen, sectie NBT, UBA, ON6NB Belgium
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The Wanganui Amateur Radio Society Inc., Branch 48 NZART New Zealand
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Shelby Amateur Radio Club - hosts of one of the largest Hamfest in the country. Still the Shelby Amateur Radio Club's Shelby Hamfest but now in Dallas, NC
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Serving Austin and Surrounding Counties
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An interesting article about a homemade LiFePO4 battery pack for ham radio operations, a 10Ah LiFePO4 based on Headway 38120 Cells
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Using RadioMobile to evaluate Meteor Scatter DX-pedition sites
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An article on how to measure electrical current with a digital multimeter or analogue multimeter.
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A deep analysis of UHF connectors performance tests, including return Loss of UHF Connectors, Mismatch Loss of UHF Connectors, SWR of UHF Connectors
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The San Lorenzo Valley Amateur Radio Club, WR6AOK, is a ham radio club for amateurs in and around the San Lorenzo Valley. We are located between San Jose and Santa Cruz in the coastal mountain range of the Santa Cruz County, California.
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VHF-UHF receiver covers from 25 to 800 and 900 to 2000 MHz in the following modes: AM, AM-W, FM, FM-W, FM-N, USB and LSB
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ham radio clun in Vermont USA
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All about RTTY, including audio samples, rtty software, video exaples and rtty related links
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The Potomac Highlands Amateur Radio Club, a non-profit association in West Virginia
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The structure of this dual band VHF UHF antenna is very simple. It consists of two identical square loops, whose sides measure a quarter wave, connected together at the ends. A project by I5NZR
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The **Luis Trenker Award** is an amateur radio operating award established by the Amateur Radio Club Ladinia to honor the director and author Luis Trenker from Val Gardena, South Tyrol, Italy. To qualify for the award, HF stations must achieve five confirmed QSOs with each of five specific Alpine countries: Italy (with specific prefixes like I1, IK1, I2, I3, IN3, IW3, IV3), France, Germany (with DOKs A, C, T, U), Switzerland or Liechtenstein, and Austria (with prefixes OE2, OE3, OE6, OE7, OE8, OE9). A single QSO with a member of the Amateur Radio Club Ladinia can substitute for the five required Italian QSOs, with members' QSL cards bearing a special rubber stamp. VHF/UHF stations have a simpler requirement, needing only one confirmed QSO with each of the five Alpine countries. SWL stations are eligible under the same conditions as transmitting stations. All contacts must be valid after April 12, 1990. Applicants must submit a list of contacts, certified by two OMs or a club, to the Amateur Radio Club Ladinia in Ortisei, South Tyrol, Italy. The award manager is IN3PGS Karlheinz, and the club official is IW3AQL Luca.
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The Pamlico Amateur Radio Club (PARC), founded in 1994 and incorporated as a 501(c)(3) non-profit, provides a community hub for amateur radio operators in the Inner Banks region of North Carolina. Affiliated with the _ARRL_ since 2011, PARC supports local ham radio activities and offers resources for those living or traveling near the Pamlico River. The club maintains an active presence, participating in events like Field Day and offering various operating opportunities. Members engage in diverse aspects of the hobby, from DXing to emergency communications, fostering skill development and camaraderie. The club's focus extends to public service, providing communication support when needed within its operational area. PARC's commitment to the amateur radio community is evident through its long-standing presence and continuous engagement, reflecting over **30 years** of service since its establishment.
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The Nechako Radio Club was formed in the summer of '93 to provide a common meeting point for the local area amateur radio operators.
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The Northwest Amateur Radio Society was established in 1985 and serves amateur radio operators in the suburban FM 1960 area NW of Houston.
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Read all the key details about Vacuum Tubes or Thermionic Valves that provided the foundations for today's electronics technology.
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A Primer On Mics For Ham Radio. Difference between dynamic and condenser microphones, microphone plugs and differences in kind of microphones available on the market
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General interest amateur radio club located in Bergen County, New Jersey.
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ARRL Special Services Club, Orange County, North Carolina
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Dipole antennas are some of the simplest antennas to build in addition to being very efficient and solid performers. I wanted to make a simple dipole antenna for QRP portable operation that could be used on multiple bands.
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Students amateur radio club SPORADIC of Kursk's state technical university . In entire lifetime the radio station worked under the main calls: UA3KUO, UK3WAF, UZ3WWW, RW3WWW, and also used more than 60 calls in radio-expeditions(RC3W, R6SE, RP3W, RI1OP, RI1SI, R6SC). The chief of radio station since 1977 is Pikkiev Valery RW3WW.
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Demonstrates the practical application of APRS (Automatic Packet Reporting System) through the lens of HB9PVI's activities in Switzerland. It covers the system's core function of reporting geographical positions and telemetry data from various objects, including mobile stations, aircraft, and the ISS, distributed via packet radio and internet gateways. The resource highlights the routing paradigm shift introduced in April 2005, specifically the recommendation to use _WIDE1-1_ instead of RELAY and WIDE for digipeating to reduce duplicate packets. The page presents real-time maps displaying the positions of amateur radio stations in Switzerland and around Bern, updated every few minutes. It details specific callsigns like _HB9BA-2_ (HB9PVI's home QTH), _HB9BA-8_ (a weather station), and _HB9BA-4_ (a WIDE digipeater on Weissenstein mountain), providing context for their roles within the local APRS network. Links to track HB9PVI's mobile operations (_HB9PVI-9_) and handheld devices (_HB9PVI-15_, _HB9PVI-7_) are also provided. Furthermore, the resource curates a list of APRS software options for various operating systems, including _JavAPRS_ for Europe, _UI-view_, and _X-Astir_ for Linux, alongside digipeater/IGATE software like _DiXPRS_. It also offers downloadable APRS information, including a PDF article by HB9PVI and HE9ZGN, and a PowerPoint presentation in German, making it a repository of practical and historical APRS data.
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The new home of MLARS
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Special Service Club
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The Chelsea Amateur Radio Club is based on service to the community and the advancement of Amateur Radio in Southeast Michigan.
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This channel is all about radio listening and dxing. I will be covering frequency bands like longwave, AM/MW and shortwave. I'm embarking on my renew interest in this hobby since my childhood.
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The Itchen Valley Amateur Radio Club (IVARC) provides a local hub for radio amateurs in the Southampton and Winchester areas of the UK. This club actively participates in various UK contesting events, including the weekly _RSGB VHF UKAC_ contests, _RSGB AFS club contests_, and _BERU contests_, alongside annual UK field days. As a _Brickworks Accredited_ club, IVARC is committed to supporting both new licensees and experienced operators in exploring diverse aspects of the hobby, fostering skill development and operational experience. Meetings are held on the 2nd and 4th Friday of each month at the Bianchi Suite, Otterbourne Village Hall, offering a consistent schedule for members and visitors. The club's recent activities include supporting _Jamboree On The Air_ (JOTA) for local Scout groups (e.g., GB1ESG), activating special event stations like _GB0SR_ from Solent Rescue Lifeboat Station, and organizing club visits to significant historical sites such as Bletchley Park. IVARC also hosts events like QRP Day and National Field Day, providing practical operating opportunities and fostering camaraderie among members.
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Serving Hardin County Since 1969
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This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.
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FTB2800 is a memory management software program for the Yaesu FT 2800 M FM transceiver.
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Eham user reviews for Radio Shack PRO-94 1000 channel Dual Trunking Scanner
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Outlines the Club de Radio Amateur de Charlevoix (VE2CCR), a regional amateur radio organization serving the Charlevoix area in Quebec, Canada. The resource details the club's objectives, which include promoting amateur radio, fostering technical knowledge among members, and supporting emergency communications. It lists various club activities such as regular meetings, field day participation, and local repeater maintenance. The site provides contact information for prospective members and details on how to join the club, including membership fees and application procedures. Information on the club's repeaters, including frequencies and access tones, is also presented, facilitating local amateur radio operations. The resource serves as a central hub for VE2CCR members and interested individuals seeking to engage with the amateur radio community in Charlevoix.
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RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
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Adapting a common PC earphone with microphone to connect to a transceiver via a homemade pre-amplifier, using a simple chip with aprox 10 db gain. Includes a schematic diagram
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Analyzing 433 MHz radio signals from common wireless devices, such as temperature sensors and remote controls, involves understanding **On-Off Keying (OOK)** modulation. This resource details the process of capturing these signals using a Software Defined Radio (SDR) like Gqrx and then visually inspecting the captured audio data in a sound editor such as Audacity. It differentiates between **Pulse Width Modulation (PWM)** and Pulse Position Modulation (PPM) encoding schemes, illustrating how to identify and decode binary data by eye based on pulse and gap durations. The article provides a step-by-step walkthrough for decoding a wireless thermometer's data, correlating bit patterns with known temperature, humidity, and channel values. It also demonstrates decoding an RF remote control's button presses, highlighting the constant and varying parts of the transmitted packets. The content further introduces automated decoding using tools like RTL_433, explaining its capabilities in parsing various device protocols and showing how to interpret its output, including modulation type and decoded data. Specific examples include analyzing Prologue sensor protocol specifications from RTL_433's source code and noting common operating frequencies like 433.92 MHz in Europe and 915 MHz in the US.