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Rhombic antenna for shortwave radio broadcasting, general description and radiation patterns

Radio Norway International web site

KWRTTY V1.1.3, released on February 4, 2008, is a freeware RTTY reception program designed for Windows operating systems (Win95 and higher, requiring a minimum 133 MHz Pentium processor and 32 MB RAM). Its primary function is to decode and log amateur radio **RTTY** transmissions, including the capability to set up a private RTTY mailbox that records only messages addressed to the user's callsign. The software is specifically optimized for receiving and logging marine weather reports from the DWD (Deutscher Wetterdienst), categorized by sea areas, making it particularly useful for sport boat operators. The duration of logging is limited only by available RAM. For its core functionality, KWRTTY requires the **MMTTY-Engine** by Makoto Mori, JE3HHT, as an interface between the sound card and the program. This engine, also freeware, needs to be copied into the same directory as KWRTTY. The program's design focuses on continuous logging of specific RTTY content, offering a specialized tool for both general amateur radio RTTY monitoring and dedicated weather report reception, distinguishing it from more general-purpose digital mode software.

Engaging in **QRP** operations, where amateur radio transceivers transmit at five watts or less, presents a unique challenge and satisfaction for many radio amateurs. This mode emphasizes efficient antenna systems, keen operating skills, and often, the art of **homebrewing** equipment to maximize performance under power constraints. Operators frequently utilize CW (Morse code) for its superior signal-to-noise ratio, enabling reliable contacts over long distances with minimal power. The VK QRP Club, formally known as the CW Operators' QRP Club Inc., serves as a focal point for Australian amateurs passionate about these low-power pursuits. The club fosters a community where members can share insights on antenna design, circuit construction, and operating techniques specific to QRP. It provides resources such as information on club nets and frequencies, Morse practice materials, and a platform for exchanging ideas among enthusiasts. Membership offers access to a network of like-minded individuals, promoting the continued development and enjoyment of QRP within the amateur radio hobby. The club's activities encourage experimentation and skill refinement, vital aspects of successful low-power communication.

Midland GXT-900 FRS/GMRS 30-Mile Range Two-Way Radio product review

Ham Radio 20 / 40 meter short Coax Trap dipole antenna designed with the coax trap design calculator program

Vintage Ham radio restoration, AM operations, radio history, and the largest vintage-only classified ad section.

Amateur Radio News and Information Bulletin Service delivered via satellite on AMC-7, transponder 5, 7.5 MHz wideband audio and over the internet in MP3 and RealAudio format.

Ham Radio, Scanning, Marine, GPS and electronic web shop in Denmark

How Ham Radio Works, by Gary Brown, Ham radio can be very portable and affordable. In this article, we will look at ham radio and show you how to get started in this wireless world

Recorded scanner radio traffic from police and fire department communications. Stockton Police scanner recordings of pursuits, fights, shootings, officer involved shootings, in progress high intensity calls.

Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC bands, need a lot that is at least 100 feet across.

A short wave regenerative receiver project by Charles Kitchin, N1TEV

Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

EchoMac is an apple macintosh client for EchoLink internet radio network.

Manufacturers of high performance low power am transmitter products: sstran amt3000, bc-100, and the mw-250. for home and professional use.

The National Radio Club is the world's oldest and largest Medium Wave DX club, founded in 1933.

QRP Kits and Projects for the low power Amateur Radio enthusiast

Antennas and homebrew ancilliary equipment

On line shop for amateur radio, cb radio, marine, satellite and scanner supplies based in UK

Another good collection of TS-850 modifications

Comprehensive ARRL contest calendar, includes rules sopbox web reports and QST results. Contest Corral include non-ARRL contests schedule for coming months.

The FTBVR5K software facilitates comprehensive memory management for the Yaesu VR-5000 scanning receiver, supporting operations such as modifying, moving, adding, deleting, masking, and unmasking individual memories. It allows for importing and exporting memory definitions via CSV files, sorting memories by frequency or name, and identifying duplicate frequencies within the receiver's configuration. The program also supports the creation and modification of bank definitions, management of PMS (Programmable Memory Scan) definitions, and adjustment of PMS scanning ranges. Additionally, users can print detailed reports of memories, banks, PMS definitions, rig settings, and S.CALL details, with visual cues like red highlighting for masked memories and yellow for the priority channel. FTBVR5K provides functionality to alter values within the VR-5000's Set and Config menus, and to change S.CALL station names and frequencies. The application operates on standard Windows PCs, including Windows XP, Vista, 7, 8, and 10, requiring an available COM port for transceiver connection, which can be a conventional serial port or a USB adapter. A minimum screen resolution of 800 x 600 is supported, with 1024 x 768 recommended for optimal usability.

Mobile scanner antenna or Base station scanner antenna, scanner manuals and scanners

Rewiew and notes on IC-756

Amateur radio club serving NEW YORK area. Club has fully equipped station,holds two hamfests a year,ve exam ,field day and contesting.

This project outlines the construction of a 3-element reversible quad antenna specifically designed for the 40-meter band. The materials required include pushup towers, pressure-treated posts, insulated wire, and various electrical components such as relays and a balun. The construction process is straightforward, beginning with the installation of the posts in a straight line, followed by the assembly of the antenna elements and their elevation to the desired height. The antenna's design allows for directional signal reception, making it ideal for operators looking to enhance their communication capabilities on the 40-meter band. The project includes detailed instructions on tuning the antenna for optimal performance, ensuring that operators can achieve the lowest SWR possible. Additionally, the design can be adapted for other bands by extrapolating dimensions, providing versatility for amateur radio enthusiasts. Overall, this reversible quad antenna project is suitable for both beginners and experienced operators, offering a practical solution for improving signal strength and directionality in 40-meter communications.

Pictures of a 2 meter, 220, 440 copper J-Pole antennas

Collection of modifications notes for the Kenwood TS850

An inverted V antenna for 40-80 with loading coils. This antenna is a full size on 40 and a shortened 80 by KG0ZZ.

Demonstrates a very fast and effective logbook solution for amateur radio, **HAM-LOG** by HB9CQV, which operates as freeware and supports multiple languages including German and English. This application is designed to be self-running, even from USB devices, making it a portable option for hams on the go. Its database capacity is practically unlimited, capable of handling up to a billion QSOs, a significant advantage for active DXers and contesters. The software offers multi-user networking capabilities and integrates with popular digital mode programs like MixW2, FLDigi, and MMVARI through DDE connections or clipboard/INI-file transfers. It streamlines QSO logging by saving entries directly from these programs and supports import/export via **ADIF** for compatibility with other tools such as MMSSTV. HAM-LOG also connects to DX Atlas and Ham-Cap for enhanced operational awareness. Further enhancing its utility, HAM-LOG includes automatic callsign lookup on QRZ.com and supports eQSL.cc for electronic QSLing. The resource also details two smaller utilities: an Online Callbook DLL for MixW, which automatically populates names from QRZ.com into MixW log entries, and an Online Callbook LookUp command-line tool that writes callsign and name data to an INI-file, both requiring QRZ.com credentials.

Orange County Sheriff Live Audio Feed at radioreference. Florida USA

Why 6 meter hams design the best antennas

PMR446 radio information, news, reviews and forum. We also run a PMR446 gateway network using the eQSO system.

Amateur Radio License exams are composed of questions from a pool. Use this application to practice all possible questions prior to taking your exam

Colombia

Outlines recommended operating procedures for amateur radio repeaters, detailing best practices for general on-air conduct. It emphasizes using simplex when possible, monitoring the frequency before transmitting, and maintaining concise, thoughtful transmissions to avoid monopolizing the repeater. The resource also stresses the importance of legal identification, such as the Canadian requirement at the beginning and end of a contact and every thirty minutes of operation. Furthermore, the article provides specific instructions for **autopatch** operation, including access codes and the necessity of brief calls, while cautioning against misuse for long-distance calls or commercial purposes. It highlights the financial support expected from regular users to maintain repeater infrastructure. Finally, the guide differentiates between permanently linked repeaters, which offer extended coverage, and **code access linked repeaters**, explaining the sequence of identification and code entry required to establish and terminate links for broader communication.

The MFJ-940 VERSA TUNER II is a useful little antenna tuner for the HF-bands. However it suffers from a minor design error, which can be easily rectified.

OZ2OE Technical Home Page - 432 MHz PA with 8874

This document serves as a comprehensive guide for amateur radio operators looking to enhance their Yaesu FT-2000 or FT-950 transceivers with pan-adapter capabilities. A pan-adapter is an invaluable tool that allows operators to visualize the frequency spectrum, making it easier to identify signals and improve operational strategies. The guide details the necessary hardware modifications, including the RF Space IF-2000 board and various SDR options, along with their costs and installation procedures. The document caters to operators of varying technical expertise, providing step-by-step instructions and troubleshooting tips. It emphasizes the importance of using a sound card and software like PowerSDR and HRD for optimal functionality. By implementing these modifications, users can monitor multiple frequencies simultaneously, leading to a more productive and enjoyable amateur radio experience. This resource is particularly beneficial for those looking to modernize their equipment and remain competitive in the ever-evolving world of amateur radio.

The Bundesnetzagentur's online tool provides a direct interface for searching **German amateur radio callsigns**, enabling users to retrieve specific details associated with licensed operators. The system utilizes a web-based form where users input a callsign to query the official German amateur radio database. This resource is built on Microsoft Visual Studio .NET 7.1 with Visual Basic .NET 7.1, indicating a mature and stable backend for data retrieval. This callsign lookup service facilitates rapid verification of German stations, which is particularly useful for **DXers** confirming contacts or for contesters needing to cross-reference logs. Unlike broader international callbooks, its focused scope on German licensees ensures high accuracy and direct access to official data. The tool's simplicity and direct functionality make it an efficient utility for any amateur radio operator interacting with German stations.

About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

The project outlines the process for constructing a low-power FM broadcast transmitter using a Raspberry Pi Zero, a simple wire antenna, and battery power. It details the software installation steps for PiFM and MPG123, essential for generating and transmitting audio. The resource provides instructions for configuring the Raspberry Pi to broadcast FM signals, including command-line operations for initiating transmission and playing audio files. It specifically focuses on the Raspberry Pi Zero's capabilities for this application, highlighting its cost-effectiveness and minimal hardware requirements. The content presents a practical, hands-on approach to creating a basic FM transmitter, suitable for short-range, experimental broadcasting. It includes guidance on testing the FM output and ensuring proper operation of the software components. The project emphasizes the use of readily available components and open-source software to achieve functional RF output.

A french document about Inverted V dipole antennas

Listen to live Digital Police Radio's from Martin and St Lucie County

A well documented article on a small magnetic loop antenna for the 40 meters band

Radi Australia web site

Collection of world wide radio amateur maps by SP8DA

Albania

yaesu radios community talk, impressions and comments about yaesu vx7r