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Query: radio communication
Links: 483 | Categories: 30
Categories
- Ham Radio > Clubs > North America > USA > Alabama
- Operating Modes > APRS > APRS in USA
- Ham Radio > ARES RACES
- Propagation > Beginner's Guide
- Ham Radio > Clubs > Technical Specialty > Digital Modes Clubs
- DX Resources > Nets > Emergency Nets
- Shopping and Services > Regional > Europe
- Ham Radio > Clubs > North America > USA > Idaho
- Ham Radio > Clubs > North America > USA > Illinois
- Ham Radio > Clubs > North America > USA > Iowa
- Ham Radio > Clubs > North America > USA > Maine
- Ham Radio > Clubs > North America > USA > Maryland
- Ham Radio > Clubs > North America > USA > Massachusetts
- Ham Radio > Clubs > North America > USA > Michigan
- Ham Radio > Clubs > North America > USA > Mississippi
- Operating Modes > Morse code
- Ham Radio > Clubs > North America > USA > Ohio
- Operating Modes
- Propagation
- Operating Modes > PSK31
- Operating Modes > QRP
- Radio Scanning > RailRoad
- Radio Scanning > Scanner Frequencies
- Antennas > Sloper
- Ham Radio > Clubs > North America > USA > South Carolina
- Propagation > Sunspots
- Technical Reference > Transverters
- Ham Radio > Clubs > North America > USA > Virginia
- Ham Radio > Clubs > North America > USA > West Virginia
- Ham Radio > Clubs > North America > Canada > Yukon Territory
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Crank-up(telescopic) and tilt-over tower, Ring rotator for mounting an extra antenna, from 16m to 42m, Strong safe and smooth, Radio communication and commercial tower.
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Demonstrates the operational status and reception reports for the SK6RUD/SA6RR QRPP beacons, which transmit on 478.9 kHz, 1995 kHz, 10.131 MHz, and 40.673 MHz. These beacons utilize extremely low power, with the 630-meter beacon operating at approximately 0.1 watt ERP into an L-antenna, showcasing the potential for long-distance contacts under favorable propagation conditions. The site details the specific frequencies and antenna types employed, such as a vertical at 500 kHz and a 1/4 vertical for higher bands. The resource compiles over 10,530 reception reports from amateur radio operators worldwide, logging details such as date, time, band, RST signal report, locator, distance, and receiver setup. Notable long-distance reports include a 500 kHz reception by AA1A-Dave from 5832 km in 2008 and a 10.133 MHz reception by ZL2FT-Jason from 17680 km in 2010, illustrating the global reach of these low-power transmissions. Each log entry provides specific equipment used by the reporting station, including transceivers like the Yaesu FT817, ICOM IC-7300, and various antenna configurations such as coaxial mag loops, inverted Ls, and end-fed wires. The primary objective of the SK6RUD beacons is to challenge conventional notions of power requirements for effective two-way communication, proving that contacts over significant distances are achievable with minimal output. The site also includes a submission form for new reception reports, fostering community engagement and continuous data collection on propagation phenomena across different bands. The detailed logs offer practical insights into real-world propagation characteristics and the efficacy of QRPP operations.
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Presents a comprehensive listing of VHF and UHF repeater systems operating within Ecuador, detailing their operational frequencies and geographical coverage. The resource includes specific entries for locations such as _Guayaquil_, Cuenca, and Manta, alongside their respective frequency pairs. For instance, the Cerro Azul repeater in Guayaquil operates on **6.760- T**, indicating a transmit offset, while the Sta. Elena system utilizes a 26.660 MHz transmit frequency. The data provides essential information for local and visiting amateur radio operators seeking to utilize regional repeater infrastructure. It delineates coverage areas using two-letter provincial abbreviations, such as AZ for Azuay and GY for Guayas, facilitating route planning and mobile operation. This compilation is particularly useful for those engaged in local communications or emergency preparedness within the Ecuadorian amateur radio community, offering a practical guide to available repeater assets.
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Worldwide distributor of radio communications, wireless equipment, accesories and complete systems.
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The Icom IC-7300 is a popular HF transceiver among amateur radio operators, known for its advanced features and ease of use. However, integrating it with software like Ham Radio Deluxe (HRD) can be challenging due to compatibility issues. This guide provides step-by-step instructions on how to configure the IC-7300 to work seamlessly with HRD 5.24, the last freeware version available. It covers the installation of necessary drivers, setting up virtual COM ports, and configuring audio settings for digital modes. To begin, users must download and install the Icom USB driver, which creates a virtual serial COM port for communication between the radio and the computer. The guide details how to check for this new port and adjust the CI-V address settings to ensure proper communication. It also explains how to set up the soundcard settings in HRD for digital modes, allowing operators to transmit and receive audio effectively. Following these instructions will enable IC-7300 owners to maximize their radio's capabilities with HRD.
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European supplier of radio communication receivers and scanners, transceivers, antennas, cables, connectors, GPS and accessories based in Prhaha Czeck republic.
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The Research and Documentation Center for the History of Radio Communications and the Electronic Media (our full name) is the world's biggest organization to collect, save, research and present whatever relates to the history of radio communications, particularly amateur radio and broadcasting
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The East Tennessee DX Association (ETDXA) is an amateur radio club that welcomes all experience levels. They focus on a variety of activities including DXing (long-distance communication), contesting, and general ham radio topics. Their goal is to create a community of radio enthusiasts who can learn from each other and enjoy the hobby together. They also aim to promote the art and science of DXing while representing East Tennessee on the international amateur radio scene
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Presents a detailed compilation of **6-meter** voice repeaters operating within the 53-54 MHz segment across Australia (VK) and New Zealand (ZL), providing essential data for local and visiting radio amateurs. Each entry specifies the repeater's output and input frequencies, its assigned callsign (where applicable), the primary service area, current operational status (e.g., operational, under construction, scrapped), and a **Maidenhead grid locator**. The resource also includes the date the repeater was last heard or updated, offering insights into its recent activity. This listing is meticulously maintained by VK2KFJ, who updates entries based on personal observations and confirmed reports from other operators. It serves as a practical reference for hams seeking to utilize the 6-meter band for local communication via repeaters, particularly for those engaged in mobile or portable operations within the specified regions. The data helps operators configure their transceivers correctly for accessing these vital communication hubs. Beyond the repeater details, the page also notes common 6-meter FM voice simplex frequencies, such as the 52.525 MHz international call frequency, and lists historical packet simplex frequencies, though their current operational status is uncertain. This comprehensive approach ensures that operators have a broad overview of 6-meter activity in VK and ZL.
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Clover technical specifications, digital communications mode that conveys 8-bit digital data over narrow-band high-frequency radio.
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Radio Communication Base Station, Marine, Cellular and Mobile antennas covering all bands between 2-6000MHz, Communication Accessories, Coaxial Cable, Coaxial Connectors and Accessories
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Showcasing a range of Morse code paddles, UR5CDX emphasizes craftsmanship in both dual and single paddle designs. Each key is engineered for optimal performance, catering to the needs of CW operators. The paddles are not just tools; they reflect the artistry of ham radio equipment. With options for personalization, including illuminated tags, operators can enhance their shacks with unique identifiers. The commitment to quality is evident in the materials used and the precision of the mechanics, ensuring reliable operation during contests or casual QSOs. UR5CDX also engages with the community, sharing insights on the manufacturing process and the impact of current events on production timelines. This connection fosters a sense of camaraderie among operators who appreciate the nuances of Morse code communication.
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VHF, UHF and Satellite Antennas for Government, Commercial and Amateur Radio Made in Nebraska USA
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Amateur Radio - Antenna Zoning Book by Fred Hopengarten Telecommunications Lawyer
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The following table is adapted from the International Telecommunications Union Radio Regulations Appendix 18, including changes adopted by the 2012 World Radio Conference.
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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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Rail Radio Communication Feeds broadcasted from all over the United States and beyond.
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XLT Communications two way radio accessory manufacturer, microphones, headsets, belt clips, earpieces, radio cases
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MARC is dedicated to providing safe and reliable two-way radio communications for selected charity events in their respective regions
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Codec2 is an open source low bit rate speech codec designed for communications quality speech at 2400 bit/s and below. Applications include low bandwidth HF/VHF digital radio and VOIP trunking.
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Site dedicated to amateur radio astronomy, providing information on Earth-Moon-Earth (EME) communication, the Search for Extra-Terrestrial Intelligence
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Radio communication specialist, ham radio, cb radio products dealer from Rotterdam Holland
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The club was established in 1975 with the purpose to further the exchange of information and cooperation between members, to promote knowledge, to prepare for service in the community in time of disaster or need for emergency communications,
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Trained amateur radio communicators under ARES, RACES and Skywarn serving Harford County, Maryland communities
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Our Mission: To provide emergency communications to central Ohio public safety, emergency, health, government and relief agencies in times of disaster.
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The HA8TKS VHF DXCluster is an essential online resource for amateur radio operators focusing on VHF and higher frequencies. This platform provides real-time information on DX spots, allowing users to track and engage in two-way radio communications effectively. The integrated map mash-up feature enhances the user experience by visually displaying the locations of DX stations, making it easier for operators to plan their contacts and optimize their antenna setups based on geographical data. In addition to the DXCluster functionality, the site offers various HAM tools, including a QRB calculator, which helps operators determine the distance to DX stations based on Maidenhead grid locators. The platform supports multiple modes of operation, including CW, SSB, RTTY, and digital modes like FT8 and JT65. With a user-friendly interface and comprehensive data, the HA8TKS VHF DXCluster is a valuable asset for both novice and experienced operators looking to enhance their DXing and contesting activities.
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"Located at Nellis Airforce Base-Las Vegas, Nevada USA. Nellis RAC is a progressive radio club. Providing licensing classes, on-air code study group, vhf/uhf repeaters, emergency and public service communications, ""Aviation Nation"" Airshow Special Event Station N7V"
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Club Russian Robinson for amateurs interested in radio communication from polar stations, islands and maritime mobile objects RRC founded in 1993. Goals are consolidation of radio amateurs, operating now or operated in the past on islands, drift-ice research, arctic and marine stations, signing their personal callsigns or as participants of DX-peditions.
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The mission of this Association is to foster and promote the hobby of Amateur Radio, to provide repeater systems for the Amateur Radio community, to provide public service and emergency communications when needed, to provide education for licensing, and to provide a forum for members to meet and exchange information, share experiences, and socialize with one another.
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The **Solarcon A99** vertical antenna, a half-wave over a quarter-wave variable mutual inductance design, primarily serves the 11-meter CB band but also finds use on 10 and 12 meters for amateur radio operators. Its simple construction, consisting of three fiberglass sections and a 16 AWG radiating element, makes it an accessible option for new operators or those seeking an easy-to-install base station antenna without complex mounting requirements. Despite claims of 9.9 dBi gain being widely considered exaggerated, and a manufacturer rating of 2000 watts power handling often viewed with skepticism (with 300 watts suggested as a practical limit), the A99 maintains popularity due to its low cost and ease of deployment. It typically tunes to a 1.2-1.3 SWR out of the box, requiring minimal adjustment via its two tuning rings. Its high angle of radiation allows for effective local communication even when mounted at low heights, such as 8-10 feet off the ground. However, the A99 is known for significant RF bleed-over issues, particularly when operated with higher power or mounted close to residential electronics. While its internal design is often described as cheap, the antenna exhibits remarkable durability, frequently lasting a decade or more in various weather conditions. Its affordability and straightforward setup continue to make it a go-to choice for many radio enthusiasts.
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CG Antenna is a HF radio communication solution manufactory based in China produce automatic antenna tuners, and digital radio interfaces.
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This is a group for CBers, Sidebanders, Amateurs and Freebanders. Items to be discussed are CB, Skip, Skeds, DX communications, SSB, export radios, Radio equipment, mods, ham radio, repairs, electronics, CW, PSK31, RTTY, digital, and different radio shops.
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This is about Small Antenna types and their properties which can help choosing proper antenna for high-frequency wireless communications as: two-way radio, microwave short links, repeaters, radio beacons or wireless telemetry
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Amateur Radio organization specializing in VHF, UHF, and microwave communications.
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The Holy Cluster is a modern ham radio dx cluster with a real time graphical map of current contacts built and design by the israeli group of developers and supported by the Israeli Association of Radio Communication, the IARC.
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Radio for Peace International (RFPI) is a Global Community Radio Station located in Costa Rica, Central America that broadcasts progressive news on shortwave radio and the internet on topics of Peace, Human Rights and the Environment. RFPI gives a voice to the voiceless by promoting democratic communication.
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The Pikes Peak FM Association is a nonprofit, amateur radio VHF/UHF group which operates and maintains VHF and UHF communications facilities serving the Colorado Springs and Pikes Peak region.
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The QRV.DK platform offers a dedicated **QRZ callsign search engine** specifically tailored for Danish amateur radio operators. It enables users to look up callsigns and ascertain their **Logbook of The World (LoTW)** status, a critical feature for DXers and contesters seeking QSL confirmations. The search functionality facilitates rapid access to operator details within the Danish amateur radio community, streamlining contact verification processes. Beyond callsign lookups, the resource includes a comprehensive repeater list for Denmark, providing essential information for local and regional VHF/UHF operations. This feature supports mobile and portable stations in locating active repeaters, enhancing communication reliability across various bands. The site also curates a collection of ham radio links, serving as a centralized hub for related amateur radio resources.
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Meetings Schedule, study groups, circulars from the radio communication division at ITU
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Superstition Amateur Radio Club: Ham Radio events and activities of the Superstition ARC include promotion of amateur radio amongst the public via licensing classes and radio communication demonstrations, on-air nets and discussion, and the December Hamfest in Mesa, Arizona
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The A QRP Club is a small group of Amateur Radio enthusiasts who enjoy building, operating and (mostly) talking about Low Power radio communications, equipment and systems.
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To promote Amateur Radio in the Gadsden - Etowah County area and to provide public service to our community in the form of emergency communications.
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The Rocky Mount Amateur Telecommunications Assn. is an amateur radio society based in Rocky Mount, NC.
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The KnightLites QRP Association is a world wide fellowship of low power (QRP) amateur radio communications enthusiasts founded in 1996, and is coordinated through the efforts of a small group of radio amateurs located in the Research Triangle region of North Carolina in the United States.
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Broadband over power lines (BPL) is a technique for transmission of high speed data (broadband Internet) over powerlines. Access BPL technology injects radio frequency energy into powerlines which were not designed for transmission of radio frequency energy, and leak substantial energy that causes interference to radiocommunications service
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A non-profit public service and educational amateur radio organization specializing in advanced and experimental microwave communications.
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Ham radio activities, from satellite operations, eme communications, dxing and contesting, qsling and direction findings, are just some of ham radio exciting activities
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HF Beam Calculator for Amateur Radio and CB Communications
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to promote amateur radio as a hobby in the Yuma area and to provide public service to our community in the form of communications during certain public events.
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River City Amateur Radio Communications Society