Search results

Complete guide to build Jpole antennas with online dimensions calculator.

HRO offers a variety of amateur radio products for sale, including transceivers, antennas, and accessories. Users can browse products by category or search for specific items. The site also features promotions and discounts on selected items.

50 MHz 1500 Watt Russian GS35B amplifier. Well documented. Complete construction details,pictures,schematics, and more.

Plans, photos, electrical and mechanical design for this HF Log periodic antenna.

Contain schematic diagram of many different radio, and some operations instructions.

U.S. Government's military handbook on grounding in pdf format

4CX250B X2 K2RIW style 2m amplifier

Freeware amateur radio transceiver control program tested with IC-756 Pro.

Repeater system in the New York metro area Service provided by W2LIE.NET

Solar Flux reports, Current Alerts and Warnings from NOAA, 27 day forcast from NOAA, charts reflecting the past 7 years Solar cycle summary charts from NOAA

Collection of Amateur radio packages for the Raspberry Pi devices

HamRadioHomebrew Cat Interface for Yaesu FT-897 by PE1OPM

A homebrew project for a 2 meter 4 element yagi beam antenna by 2E0HTS

Ubuntu software packages in "karmic", subsection hamradio

Mirko Pelcl's extensive radio collection features numerous historical transceivers and receivers, with a significant focus on military communications gear. The collection includes notable examples such as the Wireless Set No. 19, various Cold War-era military radios, and even a rare WWII spy radio utilizing a Loewe 3NF tube. Visitors can explore detailed sections dedicated to sets manufactured before 1945, including those used for military exchange, and a separate category for post-1945 radios, particularly those from the former Yugoslavia. The site also delves into specific modifications, like a digital head conversion for the RU-20, and showcases a frequency counter built with a microcontroller. This personal archive provides a unique glimpse into the evolution of radio technology, from early vacuum tube designs to more modern solid-state military transceivers like the PRC-515. The content reflects Mirko's dedication to preserving and documenting these pieces of radio history.

Yaesu FT-1000MP, FT-990 and FT-920 packet data port to pc sound card for psk 31 interface.

Eighteen-part tutorial on packet radio in HTML and ASCII format from Larry Kenney, WB9LOZ

Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.

An easy to make HF low pass filter form high power

Looking for Hams that want to experiment on VHF/UHF PSK/digital modes

ARRL Laboratory Expanded Test-Result Report Kenwood TS-2000 prepared by American Radio Relay League, Inc. Technical Department Laboratory in pdf format

Free Russian hamradio server special for radiofanats from CIS. Search engine on callsigns, electronic circuits and hamradio programs in www powered with knowledge base.

Manufacturer and direct seller of shortwave and ham radio antennas and accessories like TINYTENNA & YO-YO-TENNA

Welcome to Amateur Radio (HAM RADIO), by ARRL. A good Starting point for novices.

Amateur Radio Icons collectio

Yaesu official FT-100 icons sheet

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

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

An home made trapped dipole antenna for 40 and 60 meters band by 2E0HTS

Demonstrates the essential steps for winding **toroidal cores**, a fundamental skill for amateur radio operators engaged in homebrewing and kit building. It addresses the critical aspects of selecting the correct core material and wire gauge, emphasizing the importance of precise turn counting and consistent winding tension to ensure optimal circuit performance. The resource details methods for preparing the wire, including techniques for safely removing enamel insulation from leads using flame, sandpaper, or a solder pot, and provides guidance on tinning the exposed wire. Explains the process of mounting the wound toroid onto a printed circuit board, highlighting the need for careful lead placement and secure soldering to prevent shorts and ensure mechanical stability. It also offers a practical formula for calculating the required wire length based on the desired number of turns and the specific **toroid** size, referencing common core types like T-50 and FT-240. The guide stresses the importance of verifying the inductance of the wound component, often using an inductance meter, to confirm it matches design specifications. Provides practical tips for handling multi-filar windings and managing short lead lengths, which can be particularly challenging. It underscores the necessity of meticulous attention to detail throughout the winding and installation process to achieve reliable and efficient RF circuits.

What Amateur Radio (ham radio) is. How to get started in ham radio. License requirements. Where to find instructions.

Amateur Prefix Maps by UT0UM updated with ARRL DXCC and ITU changes, available for download in PDF

Accessing current contact information for amateur radio operators is crucial for QSLing, award tracking, and general communication within the Ham Radio community. This online tool provides a specialized callbook service, focusing exclusively on Croatian (9A) amateur radio operators who maintain active membership with the Hrvatski Radioamaterski Savez (HRS). It functions as a centralized database, allowing users to look up specific 9A call signs and retrieve associated information, primarily for verification purposes within the Croatian amateur radio scene. The utility of such a focused callbook lies in its direct relevance to local and regional operating activities, including contests, nets, and emergency communications within Croatia. While not a global callbook like QRZ.com or HamQTH, it serves a vital role for Croatian hams and those seeking to confirm contacts with 9A stations, ensuring data accuracy by linking entries directly to HRS membership status. This targeted approach streamlines the process of verifying Croatian amateur radio licenses and membership details.

CB, Hamradio informations & more ...

Solves antenna matching problem with two phased antennas. Stacked rotary beams are popular. However, connecting two 50 Ohm antennas together presents some problems.

OPCLOG provides a straightforward logging solution for amateur radio operators, enabling the systematic recording of contacts. The software primarily focuses on basic QSO management, allowing users to input essential contact details such as callsign, date, time, frequency, and mode. Its core utility lies in its ability to export log data in the _ADIF_ (Amateur Data Interchange Format) standard, which is crucial for interoperability with other ham radio applications and services. This ADIF export functionality facilitates the creation of personalized QSL cards, streamlining the process for operators who prefer custom designs over generic templates. The program's design emphasizes ease of use for individual station logging, rather than complex contest or DXpedition management. It offers a practical tool for maintaining a personal logbook, supporting the fundamental requirements for tracking contacts and preparing for awards. The software's simplicity ensures a low learning curve, making it accessible for operators focused on routine logging tasks.

CWRX, a freeware Windows application, decodes Morse code (CW) signals directly from a sound card's audio input, presenting the decoded text on screen. It supports various receive bandwidths and filtering options, allowing operators to optimize signal reception in different QRM conditions. The program's core functionality focuses on robust CW decoding algorithms, crucial for weak signal work and contesting environments. Developed by OZ1IVA, Lars Harbo, this utility provides a straightforward interface for real-time CW interpretation. It integrates basic logging capabilities, enabling users to record decoded transmissions for later review or contest submission. The software is specifically tailored for the Windows operating system, ensuring compatibility with common shack computer setups. Its design emphasizes ease of use for amateur radio operators seeking a dedicated CW decoding solution. The program's small footprint and direct functionality make it a practical tool for both casual listening and more intensive operating sessions, without requiring extensive system resources.

Collection of Yaesu FT-100 comments

German amateur radio portal mainly based on a bboard system, by DO1YAO

ARRL Laboratory Expanded Test-Result Report ICOM IC-746 Pro

A freeware apple Macintosh-based program that helps amateur radio contesters by converting a log from a radio contest into the Cabrillo file format which may be submitted to the contest sponsor.

The Russian Internet Callbook, hosted at krasnodar.online.ru, offers a specialized lookup service for amateur radio callsigns within the Russian Federation. This online tool is designed to assist DXers and contesters in identifying contact information for Russian stations. The resource functions as a digital callbook, allowing users to search for specific callsigns and retrieve associated data, which is crucial for QSLing and verifying contacts. While the concept is to provide a comprehensive database for Russian amateur radio operators, the current status indicates a configuration issue, as the domain krasnodar.online.ru points to the server but the site itself is not configured. This suggests the service may be inactive or undergoing maintenance, impacting its utility for callsign lookups. The original intent was to serve as a key _DX resource_ for the region.

This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.

The Clearwater Amateur Radio Society is an active amateur radio club based in Pinellas County Florida.

A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.

This is a design for a stealthy HF multi-band vertical wire antenna using a tree as a supportby G7AQK

Setting up a Raspberry Pi as Remote Server for RTL2832u SDR

WM7D's FT100 resource page, dedicated to providing information about and resources for, the FT100

The website provides information on the Romanian Amateur Radio Federation's participation in the World Youth Radio Orienteering Championships in 2025. It includes details on the event, the participants, and their results.

Treffpunkt Amateurfunk (German)