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Presents the personal amateur radio presence of W2CZ Efrem, offering a glimpse into their engagement with the hobby. The page serves as a digital QSL card, affirming participation in the global amateur radio community. It provides a direct connection to the operator, typical of early personal web pages in amateur radio. This resource functions as a static online identifier for the callsign holder.

Feidaxin FD160/FD150 repeater programming instructions

A practical guide to program Chinese Radios like Baofeng UB and BF series hanheld trnsceivers

Using a simple calculation, measure the distance between Earth and the Moon with the help of a local amateur radio station

The Brandon Amateur Radio Society serves the ham radio community in eastern Hillsborough County Florida.

AmTOR may be considered as the next development from RTTY. AmTOR was introduced to overcome the problems with RTTY. As a result of its performance, it has become popular on the HF bands because it gives more reliable communication, especially when interference is present. It achieves this by using a coding system that allows errors to be detected and corrected.

Founded in 1933 in Flint Michigan

The Madera County Amateur Radio Club was formed for public service, education, scientific and recreational purposes of amateur radio and to elevate the standards of operating practices and ethics in amateur radio communications. San Joacquin Valley California

Review of the Xiegu G90 20W HF portable transceiver capable to run CW SSB AMD modes, based on an Software Defined Radio

Ham Radio Ads from France by F1UFY

Ham radio information for new CW and QRP operators. Includes operating advice, reviews and articles on kit building/rig repair,

NWRS North Wales Radio Society

Radio Amateurs of Greater Syracuse is an organization involved in promoting public service, fellowship, and ham radio in general, in the Syracuse, NY area. This site provides information, news and events of interest to hams in Central New York.

RARA was founded in 1995 by a group of active amateur radio operators from several regions of the United States. Today, the club is international in scope with over 135 members around the world.

With the new name TRANSRADIO, the former TELEFUNKEN SenderSysteme AG enters into the new digital age of Broadcasting – DRM.

Group of Amateur Radio operators, generally from the Yavapai County area in Arizona, who share common interests, goals, and aspirations.

G8YMM Amateur radio web site with interest on ATV

radio.McDougallsHome.net The Web site and Blog of Amateur Radio Station K7JM. Homebrew, Construction, Operating, and Discussion

CCARS - Camden County Amateur Radio Society. Supporting the Department of Homeland Security's Emergency Communications Initiative while promoting Amateur Radio activity and fellowship in and around Camden County Georgia

Dundalk Amateur Radio Society. Ireland Calsigns EI7DAR EI0W

Miscellaneous ham radio stuff from K2DBK

Ham Radio Outlet South Africa based in Port Elizabeth

Are you confused when it comes to using toroids? The tips given in this article may simplify your next project. Comprehensive article about choosing the proper toroid.

The elgin amateur radio society Illinois

Developing operational amateur radio equipment for the 134 GHz band presents significant technical challenges, particularly in frequency generation and stability. This resource details the construction of a 134 GHz system, outlining its architecture with separate transmit (Tx) and receive (Rx) modules, each employing a local oscillator (LO) and RF head units. The system utilizes a dual Flann 50 GHz lens-type horn antenna configuration for optimal signal coupling. The transmit path incorporates an LMX2541 synthesizer chip operating at approximately 2.8 GHz, referenced by a 10 MHz double-oven Morion OCXO for exceptional stability. This signal is multiplied through a series of stages (X4, then X2) to generate a 22.4 GHz signal, which subsequently drives a dual series diode multiplier to produce the final X6 signal for 134 GHz operation. The receive side features an anti-parallel diode mixer coupled to a 144 MHz transceiver via a preamplifier, ensuring effective downconversion. Operational mode is CW, achieved by keying a multiplier stage. The project includes images of the Tx and Rx head units and describes a successful 3.5 km test with G8ACE, demonstrating stable signal tones due to PLLs locked to OCXOs at both ends, confirming the system's robust performance.

Presents _Beam Quest_, the official Japanese distributor for _SteppIR_ antennas, detailing their product lineup and services. The site showcases various _SteppIR_ Yagi models, including the _Dream Beam_ series (DB42, DB36, DB18E, DB11) with configurations from two to four elements, alongside the _Big IR_ and _Small IR_ vertical antennas. It also lists accessories such as TX/RX and PC interfaces, essential for integrating these advanced antenna systems into a ham shack. Operators often seek out _SteppIR_ antennas for their dynamically adjustable element lengths, which allow for optimization across multiple bands, a significant advantage for DXing and contesting. This adaptability contrasts sharply with fixed-element Yagis, providing a distinct edge in varying band conditions. The resource provides contact information, including email and phone numbers, for inquiries and support regarding _SteppIR_ products within Japan, serving as a direct point of contact for sales and technical assistance.

When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.

A capacitance meter kit assembled. The meter measures from 1 picofarad to 500 microfarads with an accuracy of up to 1% and less than 2%

The Exeter Amateur Radio Society has been growing since 1920 when it was born as the Exeter and District Wireless Society.

This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.

The Society Radio Operators, Chicago Illinois

A very simple experimental short wave radio receiver. This is basically just a crystal radio with two stages of transistor amplification afterwards made with scrap components.

Houston Ham Radio Club BVARC is an amateur club located in the southwest Houston Texas area

The Offshore radio guide, watery wireless websites, history pictures and sounfiles

SZ2PRO - Exemplary Radio-amateur Club Greece

We an an Amateur Radio Club in North Central Pa.

The Nanaimo Amateur Radio Association is made up of members of the community stretching from Courtenay to Duncan on Vancouver Island.

Approximately 30 active members comprise the _Racine Megacycle Club_, W9UDU, a long-standing amateur radio organization based in southeastern Wisconsin. The club provides a local hub for hams interested in various aspects of the hobby, including contesting, DXing, and technical experimentation. Regular meetings offer opportunities for knowledge exchange, project collaboration, and social interaction among licensed operators. The club actively participates in public service events and promotes emergency communications preparedness within the community. They often host field day operations, providing hands-on experience with portable setups and demonstrating the capabilities of amateur radio to the public. Membership is open to all licensed amateur radio operators. Their website serves as a central point for club news, event announcements, and contact information, supporting the club's mission to advance the art and science of amateur radio.

the Watertown Amateur Radio Club located in Watertown, Wisconsin.

The Kentucky Contest Group (KCG) website, maintained by N4GN, serves as a hub for amateur radio operators interested in **radiosport** contesting within Kentucky and southern Indiana. It details the group's dedication to promoting contesting, offers links to KCG officers, membership rosters, and upcoming meetings, and provides access to an active KCG e-mail reflector and Facebook Group for member communication. The site also features a comprehensive list of N4GN's recommended ham radio web picks, covering various categories like contesting resources, DXing, VHF/UHF/Microwave, and propagation information. The KCG's map center coordinates were updated on May 16, 2015, shifting approximately 16.5 miles SSW to 37° 21' N, 85° 39' W. Despite acknowledging current inactivity and an outdated web presence, the group remains operational, exploring options for reorganization, including a potential merger with the Tennessee Contest Group (TCG), which was ultimately rejected. The site emphasizes that membership applications are considered from anyone with a genuine interest in contesting.

Crystal radio home made projects by DL2XM

Introduction to packet radio and answers to common questions about this digital mode and about services you can use by VKFAQ

Open to employees and retirees of Avaya Inc. in Lincroft NJ. As Avaya Inc. was spun off from Lucent Technologies, AT&T Bell Laboratories, and even Western Electric

Clay County Missouri

The Australian Ladies Amateur Radio Association (ALARA) was formed in 1975 with a mission to encourage women's interest and active participation in amateur radio.