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CAT and Digital modes interface for the Yaesu FT-817

CG Antenna is a HF radio communication solution manufactory based in China produce automatic antenna tuners, and digital radio interfaces.

DMRconfig is a free utility for programming digital radios via USB programming cable. DMRConfig support several DMR transceivers by TYT, Baofeng, Anytone, BTECH, Zastone, Radtel.

W-CODE is a professional digital mode decoder system capable to decode many digital signals on HF, VHF/UHF, SHF and SATELLITE bands.

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.

Batterytech supplies NiMH, NiCd, and Li-ion battery packs, chargers, and analyzers, catering to a range of portable electronic devices including Ham Radio handheld transceivers. The product line supports popular amateur radio brands such as _Kenwood_, _Icom_, and _Yaesu_, providing power solutions for their portable models. Offerings extend to batteries for CB radios, scanners, and other two-way communication equipment, ensuring operators can maintain field operations. The inventory includes specific battery eliminators and replacement packs designed to meet the power requirements of various handheld radios. Customers can find suitable power accessories for digital cameras, PDAs, and cellular phones, alongside specialized batteries for Nextel radios. The focus is on providing reliable power sources for critical portable electronics.

Presents the official web presence for the Mike Charlie DX Group, identified as 14MC, a CB radio association operating from Lyon, France. The resource details the group's activities, which include engagement in digital communication modes such as packet radio, PSK31, SSTV, FSSTV, and MT63, indicating a focus beyond traditional AM/SSB CB operations. It provides contact information, including the group's email address and a specific callsign, 14MC17, associated with the publisher. The site offers historical context through its copyright dates of 2000-2001 and a last update timestamp of October 6, 2004, reflecting its operational period. It lists key identifiers like "14MC01" and "14MC17," suggesting individual or station callsigns within the group structure. The content emphasizes the group's identity as a "cibiste lyonnaise" association. The resource serves as a digital archive for the 14MC group, documenting its existence and operational interests in CB radio and digital modes. It provides specific keywords like "14," "cb," "14MC," "packet," "psk31," "sstv," "FSSTV," "MT63," "Lyon," "CIBI," "radio," and "Micro-contact," which collectively define the group's technical scope and geographic base.

Operating RTTY digital mode, this resource provides access to various versions of the _2Tone_ software engine, specifically designed for decoding and encoding RTTY signals. It details the evolution of the software, highlighting a significant technical requirement change where versions 24.09b through 26.01a necessitate a PC CPU with the AVX instruction set, a crucial detail for operators considering system compatibility. The page lists numerous historical and current releases, enabling users to select a version compatible with their hardware and operating environment. The utility of 2Tone lies in its ability to interface with established amateur radio programs such as _N1MM Logger+_, WriteLog, and QARtest, enhancing their RTTY capabilities. While specific performance metrics like decoding accuracy or WPM limits are not quantified on this page, the availability of multiple versions, including those without AVX requirements, suggests a commitment to broad user accessibility. The software's integration with major contest logging applications indicates its primary application in competitive RTTY operations, where reliable decoding is paramount for achieving high scores.

Digital voice on Amateur Radio - devoted to the discussion of digitized voice and data over analog emission modes.

QRadioLink is a Linux analog/digital SDR transceiver application with Codec2 digital voice mode support.

SWL DX bulletins in spanish

This site is devoted to promoting RSQ as an improved signal reporting system for narrow band digital modes and to demonstrating its application to the popular PSK31 mode.

Presents the **BayCom** packet radio system, detailing both its hardware and software components specifically designed for amateur radio use. The resource offers insights into the technical specifications and operational aspects of the BayCom modem, which has been a staple for many German packet radio enthusiasts. It covers the integration of these components within a typical amateur radio station setup, enabling reliable digital communication. Further, the site provides a broader context by including general information about the German packet radio network. This encompasses network topology, operational protocols, and historical developments relevant to packet radio in the region. Users can find details on how to connect to and utilize the existing infrastructure, fostering participation in the local digital amateur radio community.

About DRM, the DRM standard, emission types, upfrading your old HF RX to DRM

Introduction digital atv in the 70 cm band

TwinsLAN is Minnesota's only amateur radio club devoted to digital communications

A presentation of the NBEMS and the importance of data transmission in Digital EmComm.

Links to programs for digital modes, in spanish

An International discussion group for D-STAR Digital Amateur Radio. Radios, Repeaters, Gateways, Internet, Setup, Mobile and Portable radios, Cloning Software, icf files,

PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.

A very exaustive and complete article on JT65A and JT65-HF operating mode, including software download links, installation notes, how to make JT65A QSO and videos to correctly work with weak signals by NW7US

October 2003 QST article on working digital mondes with sound card interfaces

The Reverse Beacon Network (RBN) graph presents a dynamic visualization of amateur radio spots, specifically tracking CW, BPSK, and RTTY signals over the last 15 minutes. Users can filter these real-time spots by DX continent, spotter continent, and individual frequency bands, including **160m through 70cm**. The interface also offers a bandwidth reduction option, which is particularly useful for operators with limited internet connectivity. This resource provides a unique perspective on propagation conditions and station performance by aggregating data from various _Reverse Beacon Network_ nodes. It automatically refreshes every 10 seconds, ensuring that the displayed information is current and relevant for active DXers and contesters. The graph's Y-axis represents time, with each spot indicating activity within a one-minute interval. Beyond the primary RBN graph, the platform also features dedicated maps for both DXCluster and RBN data, including azimuthal projections. An additional FT8 graph is available, though noted as being under construction, indicating ongoing development to expand its utility for digital mode enthusiasts. The system was developed by HA8TKS, with the initial concept attributed to CT1BOH.

Connecting and configurig an USB Sound Card key to the raspberry Pi to allow digital mode decoding and remote rig applications

Explains the fundamental principles of Software Defined Radio (SDR) and Digital Signal Processing (DSP) within the amateur radio context, serving as an initial entry point for hams interested in these technologies. It covers the architectural shift from traditional analog hardware to software-centric radio systems, detailing how digital signal processing algorithms are applied to modulate, demodulate, and filter radio signals. The resource compiles a list of external links to _white papers_ and project pages, offering further technical depth. This page provides a foundational understanding of SDR/DSP, enabling operators to grasp concepts like direct sampling and quadrature mixing. It references various projects and discussions, allowing users to explore practical implementations and theoretical underpinnings. The curated links direct users to resources that might cover specific SDR hardware platforms or software applications, facilitating deeper research into the subject.

Comparison of all the oscilloscopes available for hobbyists, digital oscilloscopes that you can get for under $500, or oscilloscopes that you can build yourself.

Pc based test and measurement equipment and instrumentation: digital oscilloscope, logic analyzer and spectrum analyzer.

The Dilawri Cardiovascular Institute (DCI) is a prominent Canadian organization dedicated to advancing cardiovascular health through cutting-edge research, equitable patient care, and medical innovation. It integrates 16 core centers, including specialized units like the Centre for AI, Data Science, and Imaging, and the Centre for Heart Rhythm, to bridge research findings directly into clinical practice. Their mission emphasizes providing world-class cardiac care accessible to all patients, regardless of their geographic location, by employing disruptive innovation and creative strategies to reach individuals faster. The institute focuses on a team-based approach, ensuring patients receive the correct therapy at the optimal time for long-term well-being. DCI's commitment extends to continuous growth through education, pushing boundaries beyond standard care, and fostering a respectful, inclusive environment for both staff and patients. They lead industry collaborations to shape the detection, treatment, and management of heart disease.

JT44: New Digital Mode for Weak Signals

Setting up Digital voice keyer via USB for Kenwood TS-590

NewLogOSH is a logging application for amateur radio operators, featuring integrated support for various digital modes including FT4, FT8, RTTY, and PSK. The software incorporates DXCluster connectivity and radio interfacing capabilities, allowing for seamless operation with transceivers. Its database is built within the SQLite environment, providing a robust and portable data storage solution for logging QSOs and managing station information. The program's architecture focuses on practical functionality for daily amateur radio operations. Operators can utilize NewLogOSH for contest logging, general DXing, and managing their station's contact history. The inclusion of FT4 and FT8 modes reflects current trends in digital communication, while RTTY and PSK support caters to established digital protocols. The DXCluster integration provides real-time spot information, aiding in DX hunting and propagation analysis. Its SQLite backend ensures data integrity and ease of backup, making it a reliable tool for maintaining comprehensive station logs.

MF TeleType is a program for amateur radio digital communication via sound card, ham radio chat program for extra reliable text transmissions over long distance

The BTech DMR-6X2 dual-band DMR handheld radio is thoroughly reviewed, detailing its features and performance for amateur radio operators. This resource covers the radio's capabilities for both VHF and UHF frequencies, supporting Tier II DMR digital and FM analog modes. It highlights key specifications such as its **136-174 MHz** and **400-480 MHz** frequency ranges, CTCSS/DCS, DTMF, 2-TONE, and 5-TONE signaling, and its _digital simplex repeater_ function. The review provides a comprehensive unboxing experience, listing included accessories like two Li-Ion batteries (2100 and 3100 mAh), a programming cable, and a 37-page English user guide. It also specifies the radio's physical dimensions of 5.1 x 2.4 x 1.5 inches and weights of 9.9 oz with the 2100 mAh battery and 10.8 oz with the 3100 mAh battery, offering practical insights for hams considering this transceiver.

Digital multimeters, power supplies, frequency counters, RF analyzers, signal generators

MiniDSP is a platform for digital audio signal processing applications. Manufacture low cost digital signal processor kits for the DIY/OEM market. Our flexible audio platforms are software controlled and easily upgradeable.

Over 15 years of operational notes are documented on the AA6E Station Log, covering diverse amateur radio topics. The blog presents detailed accounts of station setup, antenna experiments, and digital mode operations, often featuring specific equipment like the _Ten-Tec Orion_ transceiver. It includes practical discussions on **station grounding techniques** and insights into PSK31 Morse code communication. The resource provides a chronological record of Martin Ewing's amateur radio activities, offering firsthand perspectives on equipment performance and operational challenges. Content often includes technical observations and solutions developed through practical experience, such as optimizing antenna systems for various bands. Specific entries detail contest participation and DX chasing, providing context for operational decisions and results.

D-star amateur radio systems, your source for d-star digital amateur radio. D-Stars users website

The mission of the Trusted QSL Group is to keep eQSL an open and free activity for amateur radio operators by promoting the Digital Signature Standard (DSS).

Greetins from Gran Canaria, Canary Island, includes many information and video about digital modes, in spanish

SIM PSK 31/63 (Integrated Structured Message BPSK31) is a digital mode based on BPSK that use a structured predefined coded format to send messages, windows free software developed by Nizar Ben Rejeb

All Digital Transceiver makers of the ADT-200A by HB9CBU

This article was first published in CQ-TV issue 208. Author try to explain digital television in layman's terms and without getting too involved in mathematics.

The Kamloops Amateur Radio Club is a non-profit organization that has been incorporated under the Society Act. Our organization has been building and maintaining a network of Amateur Radio mountain top repeaters to enable voice and digital communications between a number of interior communities for many years.

Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter

The CAT and audio interface version 3 project by PA5CA presents a comprehensive solution for integrating amateur radio transceivers with computer sound cards, facilitating digital mode operation and CAT control. It includes detailed schematics for the interface circuitry, illustrating the isolation transformers for audio paths and optocouplers for CAT data lines, ensuring robust electrical separation between radio and PC. The resource also provides PCB layouts, enabling constructors to fabricate their own boards for this specific design. The project outlines the component selection and assembly process, emphasizing the use of readily available parts to build a reliable interface. It addresses common challenges in sound card interfacing, such as ground loops and RF interference, through its isolated design. This construction guide offers practical insights into building a functional interface, making it suitable for hams interested in DIY radio accessories for digital modes like FT8, RTTY, and PSK31.

ARRL has embarked on a project to learn firsthand what D-Star digital technology has to offer and to assess its capabilities in a real-world Amateur Radio environment.

The purpose of the National Silent Key Archive is to collect and preserve photographs, life event narratives, and data artifacts of deceased Amateur Radio operators, and to make the Archive's digital library available to anyone wishing to view its contents online.

A tutorial on using RF frequency counter, how a digital frequency counter works, includes frequency counter specifications and best practices in setting counter accuracy and resolution

Getting Started in PC Soundcard Digital Radio, basics of amateur radio digital modes

The Guernsey Amateur Radio Society (GARS) provides a central hub for amateur radio operators in the Bailiwick of Guernsey, offering resources like a local _GU Callbook_ and specific notes tailored for visiting operators. The society maintains an active presence, holding regular meetings on Friday evenings from 7:30 to 9:00 PM in a unique World War II bunker located within the grounds of the Beau Sejour Leisure Centre. Beyond in-person gatherings, GARS facilitates on-air activity with a 2-meter net operating on 145.525 MHz every Tuesday night at 8:00 PM. Additionally, a DMR net is hosted on Thursday nights at 8:00 PM via the _GB7GY_ repeater, catering to digital mode enthusiasts. These nets provide opportunities for local members and visitors to connect and exchange information. Phil Cooper, GU0SUP, serves as a key contact for the society, managing inquiries and web content. The club's location is precisely described as being down a concrete staircase to the left of the road when approaching the Concourse entrance, making it straightforward for newcomers to find their way to the club's distinctive meeting place.