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Query: radio
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- Technical Reference > AI Ham Radio
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- Technical Reference > Receivers > Crystal radio
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- Ham Radio
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- Operating Modes > Ham Radio Balloons
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- Operating Modes > NPR New Packet Radio
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- Software > Radio Control
- Operating Modes > Radio Direction Finding
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The South Brevard Amateur Radio Club is based in the Melbourne, Florida area and provides volunteer communications services to the public and provides a common organization for amateur radio operators in the south Brevard County area to operate under.
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Details the Northern Amateur Relay Council of California (NARCC) as the regional coordinating body for amateur radio repeaters operating on the 10-meter band and above. It outlines NARCC's function in managing frequency allocations to minimize interference and ensure efficient spectrum use across Northern California. The resource specifies that NARCC operates in cooperation with the FCC and ARRL, indicating its recognized authority within the amateur radio community. The organization's role centers on repeater coordination, a critical aspect of VHF/UHF operations where multiple stations share limited frequency segments. It highlights the support received from local amateur radio operators, underscoring a community-driven approach to spectrum management. The site serves as a primary reference for hams seeking to establish or operate repeaters within the designated service area. NARCC's activities directly impact the operational landscape for _VHF_ and _UHF_ enthusiasts, providing essential guidelines and coordinated frequencies. This ensures orderly communication and prevents conflicts, particularly in densely populated areas of Northern California.
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The widest range of stocked components for the electronics, electrical and mechanical engineer.
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Article about types of materials that make the best earth grounding systems
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CB Radio guide by International Radio Dx Group. Only available for members of this group.
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Italian page about a home made a 1 to 40 balun with pictures and measurements on HF bands.
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Dimensions for the inverted V antenna from 160 to 2 meters by N6JSX
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Clandestine radios, cluster beacons and dx stations recordedd by AA5TB
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Unlocking the full multiband potential of the 225 Ohm elementary radiator in a folded monopole, dipole-like or turnstile layout, by Francesco Errante
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Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.
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SMIRK club news, DX information, content details, and forum for 6 meter operation enthusiasts.
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For those who are interested in telegraphy, for those who would like to learn it, for those who love it, and for those who want to improve their skills in it
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Radioberry Radio hat for raspberry pi. HF (0-30 MHz) The latest development of PA3GSB is a radio card plugged into a raspberry pi (2 or 3) , a so called rpi-hat, forming an amateur radio.
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A nice loop antenna project for 28 MHz with schematic diagram, construction details and a complete video instruction
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17-Element Very High Frequency/Ultra High Frequency Log Period Dipole Array
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OZ2OE Technical Home Page - Building a circular polarized yagi
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Links to cb radio operators web pages
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CW Midi for Windows and for DOS (free), morse code MIDI file creator
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Packet Radio networking home page with lots of informations and tech. resources
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CARF combines the wonderful world of amateur radio with Christian fellowship and service
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The online home of Stirling & District Amateur Radio Society
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An RSGB article on end-fed wire antennas and the W3EDP alternative.
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A site dedicated to portable operation in the great outdoors!
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Iulian Rosu YO3DAC / VA3IUL wire ham radio antenna panoramic with sample drawings
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A homebrewed antenna for 2m handheld radios by TB1BIG
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Rutherford County Sheriff and Fire Live Scanner Audio Feed on RadioReference.com
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Ham Radio Kits, including HF QRP SSB transceivers by EA3GCY
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The flight of the Lockheed Martin ARC Amateur Radio Balloon Repeater
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Mailing list for people interested in building radio and electronics equipment from kits or from scratch. Frequent topics include shortwave radio receivers, construction techniques, and ham radio project.
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Raising large Yagi antennas can be a challenging project. A trolley system will make the job a lot easier
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HamRadioBug.com the new home for Electronic Equipment Service. Yaesu high-end series SSB/CW transceiver repair
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ARCI is a family of over 500 people dedicated to the preservation of antique radios and related items. ARCI hosts the annual RADIOFEST meet in August.
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Presents _HamQTH_, a free online callbook and callsign server, which provides rapid XML access for various logging programs, enabling seamless integration for amateur radio operators. The service includes features such as recent activity logs, propagation predictions, and support for multiple languages, making it a versatile tool for DXers and contesters. It also offers detailed information on callsigns, including US states, counties, IOTA, WAZ, and ITU zones. Users can leverage _HamQTH_ for efficient log searching and to monitor current band conditions, aiding in planning DX operations and contest strategies. The platform's XML interface facilitates automated lookups, streamlining the process of identifying stations and gathering essential QTH data. Petr Hlozek, OK2CQR, developed this resource, reflecting practical experience in amateur radio data management.
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Emits daily 24 hour shortwave radio broadcast from Spain and targets international listeners who wish to find out about Spain and also Spaniards living abroad, who wish to keep abreast of news at home.
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This FAQ is made from the archives of the FT100 mailing list based on the OneList service.
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SecondHandRadio.com provides a platform for the amateur radio community to buy, sell, and swap used, surplus, and obsolete electronics and electrical equipment. The site facilitates transactions for a wide range of items, including ham radio transceivers, test equipment, shortwave receivers, antennas, and vintage radio components like tubes. Users can place classified advertisements with photos at no cost, catering to individuals, radio clubs, and commercial dealers seeking to liquidate or acquire gear. The platform emphasizes ease of use with a straightforward sign-up process and no associated fees or commissions for listing or selling items. It positions itself as a primary resource for used electronics within the USA, fostering a direct connection between sellers and buyers without intermediary charges. The service supports various categories beyond amateur radio, extending to military radios and antique equipment, thus serving a broad spectrum of radio enthusiasts and collectors.
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Demonstrates a practical online tool for locating amateur radio operators by geographic area, specifically using US ZIP codes. This utility allows users to input at least three digits of a desired ZIP code to retrieve a list of active licensees. Search results can be sorted by _call sign_, name, license expiration date, or ZIP code, providing flexibility in data organization. The service offers two primary output formats: direct display in a web browser, which omits address details for privacy, or export to a tab-delimited file, which includes full address information suitable for import into spreadsheet or database applications like _Excel_. This lookup service proves useful for local club organizers seeking to identify potential members within their service area or for hams planning local nets or events. The ability to export data with address details facilitates direct mailings for club newsletters or event announcements, while the browser view maintains privacy for casual lookups. The tool's design prioritizes ease of use, requiring minimal input to generate relevant local amateur radio contact information.
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Arab Amateur Radio orum. Transceivers , Antennas, Educational, Software, Digital Communication and more.
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Presents a QRP AM/CW transmitter project specifically designed for the 10-meter band, utilizing a crystal oscillator and a collector-modulated AM oscillator. The design employs a 2N2219(A) transistor in a Colpitts configuration, generating 100 to 350 mW of RF output power depending on the 9-18 Volt supply voltage and modulation depth. Frequency stability is maintained by a 28 MHz crystal, with fine-tuning possible via a Ct1 trimmer capacitor for approximately 1 kHz adjustment. The resource details the RF oscillator stage, implemented with a 2N2219 NPN transistor, emphasizing frequency stability and low power dissipation. It also covers the amplitude modulation stage, managed by a 2N2905 PNP transistor, which impresses audio information onto the carrier. Selective components (C3, C4, C7, C5) enhance voice frequencies within a +/- 5 kHz bandwidth, and modulation depth is controlled by R2 and R3. The project includes a 3-element L-type narrow bandpass filter (Ct3, L3, C10) to suppress harmonics and ensure a clean output signal. The project provides a complete schematic diagram, a comprehensive parts list including specific capacitor, resistor, and inductor values, and construction notes for the coils (L1, L2, L3). It also offers practical advice on enclosure requirements, suggesting an all-metal case or a PVC box with graphite paint for RF shielding. Operational parameters such as current draw (27mA@9V to 45mA@16V) and input impedance (50 Ohms) are specified, alongside guidance on antenna matching and the importance of a valid amateur radio license for 10-meter band operation.
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RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra or to interface your radio to a huge database of frequencies.
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Kurzwelle, shortwave, Radio , DX, broadcasting, QRG, SWL, receiver, Empfnger, BCDX, DX-Clubs, hobby, QSL, schedules, Frequenzen
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Home of the ARA Club W3CWC, Proud Sponsors of the Maryland DC QSO Party and The Hagerstown Hamfest
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Malta Amateur Radio League - Official Malta Club and QSL Bureau