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BITX ver 3 kits, frequency counters, SDR PCB, spare parts and relate ham radio accessories by VU3SUA

Italian amateur radio and electronic components shop based in Firenze Italy

Northeastern pennsylvania's premiere amateur radio club

We are a small club dedicated to help the community any way we can.

RSGB Emerging Technology Co-ordination Committee Web resource for UK amateur radio repeaters. This site gives details of Britain's amateur radio repeaters

SEMARA.ORG, the official web site for the Southeastern Massachusetts Amateur Radio Association.

Located in Johnson City, Tennessee - Washington County EM86.

Serving Chicagoland for over 50 years

For radio amateurs seeking to verify contacts or identify stations from Tajikistan, the _Tajikistan EY Callbook_ serves as a dedicated online resource. This callbook, compiled and maintained by Irage M. Tursoon-Zadeh, _EY8WW_, offers a focused database of callsigns within the EY prefix region. It provides a practical utility for DXers and contesters aiming to confirm QSLs or prepare for operations involving stations in this specific geographic area, streamlining the process of identifying active hams. The resource's utility is particularly evident for those engaged in award programs like _DXCC_ or _WAZ_ where accurate callsign verification is crucial for credit. Unlike broader, worldwide callbooks, this specialized listing ensures high relevance and accuracy for its target region, reflecting the local expertise of EY8WW. Its direct focus on Tajikistan makes it a valuable, albeit niche, tool for operators with specific interest in Central Asian DX.

KB9AMG's Top WSPR Spots presents a focused online tool for monitoring **2-way WSPR reports**, specifically detailing propagation data from February 2026 through March 2026. This resource aggregates _WSPRnet_ data, allowing radio amateurs to observe weak signal propagation conditions across various bands. The interface is straightforward, presenting callsigns, frequencies, signal-to-noise ratios, and distances for each reported contact, which is crucial for understanding current band openings and signal paths. The utility of this WSPR spotter lies in its ability to quickly visualize global propagation. Users can identify active stations and assess signal viability over long distances, with reports often showing contacts spanning thousands of kilometers. For instance, a typical WSPR report might indicate a signal from Europe reaching North America with a _SNR_ of -25 dB, demonstrating effective low-power communication. This data is invaluable for planning DX operations or evaluating antenna performance under actual propagation conditions.

Serving Columbia and Greene Counties of New York State

The Montgomery Amateur Radio Club Serving Montgomery County, Maryland Since 1966

A Friendly Ham Club!

This project involves the construction of a 5 Watt Morse code beacon transmitter that operates in the 28.200 to 28.300 section of the 10 Meter Amateur Radio band. The beacon controller uses an Arduino Uno microprocessor board to produce the three signals that control the transmitter.

How to setup and install custom filters, usually inrad, into Yaesu FT 857 and FT 897 transceivers

The Lassen Amateur Radio Club has been affiliated with the ARRL since 1972

Platinum coast amateur radio society (pcars) w4mlb - melbourne florida, pcars provides hf, vhf, and uhf communications for any police fire and rescue emergency

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.

A Six element antenna for the 50 MHz Amateur Radio Band v4 by DF9CY

ARRL Resources about Lightning Protection for the amateur radio station

An ARRL article collection about influence of radio frequency with pacemakers and other similar medical devices.

CASPERARC amateur radio club in Casper Wyoming

ICQ Podcast The home of the Premier Amateur Radio Podcast, podcasts, forum and Amateur Radio News and views.

M0CVO Antennas, amateur radio antennas for fixed station or portable operations, HF/6m all are catered for. The antennas produced by us are all manufactured by Nigel Booth, M0CVO

NT9K Personal Amateur Radio Website from Melbourne Florida

President Karami Radio Society. Amateur Radio Club Station OD5RAK, Tripoli - Lebanon

Serving the needs of the Amateur Radio Operators in Charlotte, DeSoto, Hardee, Highlands, Hillsborough, Manatee, Pasco, Pinellas, Polk, and Sarasota Counties.

The complete Bozo's guide to JT65A by K3UK, learn how to install and operate WSJT software and start making QSO in weak signals operating modes

Filters for the commercial 2 way market, MATV, FM broadcast, laboratory, marine industry, amateur radio, scanner and short wave. Antenna for amateur radio bands

SCARA is located in Siskiyou County, CA. Features information on club events, meetings, and membership.

Broward County

The Western Oregon Radio Club operates Linked Amateur Radio repeaters in the Portland Oregon Area

This website is made available to the CCARC Hamradio Community and to anyone interested in Amateur Radio.

APRS-Webserver, that presents aprs-data and maps for free using Google Maps api. The position data is imported from aprs.org, winlink.org and echolink.org. The map data are partially commercial and free. This server is for amateur radio purposes only.

The Mobileer group is for California Amateur Radio (Ham) operators to discuss family mobile radio caravan and camping trips.

Huntsville Area Active Amateur Radio Organization

Stamford Amateur Radio Association Located in Stamford, Ct. US

This online project guide details the construction of a homebrew boom microphone system. It details the assembly of a microphone shell from a 3/4" PVC pipe section and an end cap, requiring a drilled hole for a snug fit of the electret or condenser mic element. The internal wiring schematic specifies a **2.2 K** resistor and a **47 uF** polar capacitor for signal conditioning, with a circuit diagram provided for integration with IC-706 series transceivers. The guide outlines the use of CAT-5 cable for internal connections, incorporating strain relief at the rear of the mic shell, and an inline 3.5 mm jack to facilitate an external _PTT_ line, designed for a foot-mounted switch. Further construction involves fabricating a microphone shock mount from a 2-inch PVC connector, detailing the creation of four "fingers" and the insertion of screw-eyes for attaching elastic bands, which are twisted 180 degrees for tensioning and vibration isolation. A foam wind screen is also incorporated into the microphone assembly, secured with adhesive. The boom arm itself is repurposed from an articulated architect lamp, with the original lamp assembly converted into a **60 watt** resistive load for testing power sources. Microphone cabling is secured to the boom arm using wire ties, ensuring sufficient slack at hinge points to maintain articulation. The boom base is mounted to a bookshelf, requiring specific positioning to achieve proper microphone placement in front of the operator. Performance evaluation of the microphone system is conducted through on-air audio signal reports from other amateur radio operators. DXZone Focus: Online Project Guide | Boom Microphone Construction | Electret Mic Element | PTT Line

When I tell friends that I enjoy amateur radio contesting, their reaction is usually a quizzical stare. "What's that?" It is hard to explain in the span of a cocktail conversation, so here is the answer.

West Georgia Amateur Radio Society, Inc

Operating the AO-51 amateur radio satellite with a handheld transceiver (HT) presents a practical entry point for newcomers to satellite communications. This resource details the necessary steps and considerations for making basic contacts, focusing on accessible equipment. It covers fundamental concepts such as _Keplerian elements_ for satellite tracking and the importance of understanding Doppler shift effects on both uplink and downlink frequencies. The tutorial outlines a straightforward approach to satellite passes, emphasizing the use of readily available gear. It provides insights into antenna orientation and timing for successful two-way communication. The content aims to demystify satellite operation, enabling operators to achieve their first **AO-51** contacts with minimal specialized equipment. Key aspects include frequency management and basic operational techniques.

Indexes over 100 digitized amateur radio callbooks, primarily from the early to mid-20th century, providing a historical record of callsign assignments and licensee data. The collection facilitates research into past amateur radio operations, tracing callsign lineage, and identifying operators from specific eras. Each entry typically includes the callsign, licensee name, and geographic location as published in the original printed volumes. Users can browse the collection by publication date or utilize the search function to locate specific callsigns or names within the archived documents. The resource serves as a valuable repository for historical amateur radio data, supporting genealogical and operational research. Access to these scanned documents is provided directly through the Internet Archive platform, ensuring long-term preservation and availability of these historical amateur radio records.

Arizona near space research - promoting science and education by exploring frontiers in amateur radio and high altitude balloons.

Mission is to provide a forum and learning environment where club members and visitors can share ideas and experiences regarding amateur radio.

OKDX Foundation is a non profit organization the aim of which is organizing and funding radio amateur expeditions to rare countries and regions where no or low radio amateur activity exists.

Non-profit Amateur Radio club organized for the educational and scientific study of electronics and communication

The DARA Dayton Amateur Radio Association is an association of radio amateurs, organized for the promotion of interest in Amateur Radio.

US amateur radio antenna manufacturer. Produce baluns, delta loops, dipoles, ocf antennas and more