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Online log for TX7T DX pedition from Marquesas

DX Pediton to South Georgia VP8SGI Log Online IOTA AN-007

Replacing a new VFO know to elecraft K2

Personal webpage of AE7XQ with information for those starting out in amateur radio and those who are interested in CW and QRP.

An article describing basic concepts of antenna radiation, and in particular directional antennas like Yagi antennas or Quad antennas and how they determine the direction or signals.

Printed circuit board fabrication

Schematic diagram of a two tone audio oscillator by VK3YE

Multilanguage documents about Hellschreiber

Review of the popular Icom IC-2100 VHF ham radio transceiver by YB3TD

Independent Radio Club D-STAR repeater system

Modem Telephone Super Filters For HF and AM Radio Interference.

PC serial port (RS-232 DE9) pinout connection

The radio-amatori.it forum provides a platform for Italian radio amateurs to discuss various topics. The forum's content includes general interest discussions relevant to the amateur radio community in Italy. This resource facilitates interaction among hams, allowing for the exchange of information and experiences within a regional context. Currently, the domain radio-amatori.it is listed for sale, indicating a potential change in ownership or operational status. This situation suggests the forum's long-term availability or content stability may be uncertain.

Spanish amaterur and cb radio classified ads

Peoria Area Amateur Radio Club

This battery charger circuit is regulated and adjustable to make this circuit able to charge the mosto NiCAD battery.

Why build antennas out of copper and not aluminum or stainless steel. Selecting the best metals for antennas evaluating the conductivity factor.

Information and download page for the CQ/X GPS-enabled logging program for mobile operation in amateur radio state and regional QSO parties by N05W

News of Ham radio in the world

Third-Party Operating Agreements. Occasionally, DX stations may ask you to pass a third-party message to a friend or relative in the States. This is all right as long as the US has signed an official third-party traffic agreement with that particular country

Temple University Amateur Radio Club

SVARA - Saginaw Valley Amateur Radio Association

Some technical information for on Opto Isolation, Transformer Isolation, Surge Protection

DF0WD DL4YHF Longwave Station include a linear transverter and antenna tuner

30m lowpass filter for the Softrock Ensemble RXTX tranceiver.

This is the blog for the M0BGR Amateur Radio Station. I am based in London, England but frequently go out mobile or portable.

French Blog about amateur radio and new technologies, Internet, Hyperfréquences (SHF), DX Radio et Contests, Antennas and Videos by F1JXQ

SouthEast Michigan DX Association

While the Sunraysia Radio Group website is no longer actively maintained, it provides a glimpse into the amateur radio community in the Sunraysia, Mallee, and Tri-State areas of Australia. The site acknowledges that its content may be outdated, directing visitors to external links for current information. This resource acts primarily as a historical record, reflecting past activities and affiliations rather than a live, dynamic hub. It references various resources previously available to local hams, including web and social media pages, though these external links would need independent verification for current status. The site's primary value now lies in documenting the existence and focus of a regional amateur radio organization. Operators interested in the history of Australian amateur radio clubs or regional group structures might find the site's archived nature informative, despite the lack of contemporary updates.

Useful tips on building cobweb antennas. Since I've done so many posts on the Cobweb antennas I thought it best to separate them on a different page so that potential Cobweb builders can see all the posts together. Hopefully this will make planning and building easier.

An interesting article on basics about Baluns, intoducing the skin effects on radio frequency currents and its effects on receiving and trasmitting article by VE7FO

Designer and manufacturer of RF amplifiers used in a variety of custom applications in many diverse industries - from Scientific, Medical, Industrial, and Communications and Broadcast.

A 70 cm yagi antenna design by YU7EF includes tables with antenna elements dimension and spacing. This UHF Yagi antenna plan provides a maximum gain of 17.93 db

This page introduces the world IARU Grid Locator system, and discusses how to find out what your own Grid Locator is.

Have you measured the SWR at the antenna?

Laramie WY

Located in Upstate New York, specialize in unusual surplus equipment, mostly of military origin.

Sponsored by the Scandinavian Amateur Radio Teleprinter Group

A blog from poland about VHF and Satellite operations, including D-Star. Many pictures and movies from this active vhf dxer

The Triple A Amateur Radio Association (TAARA) is identified as an ARRL-affiliated Special Service Club, operating within Beaver County, Pennsylvania, approximately 28 air miles northwest of Pittsburgh. The organization provides a community hub for amateur radio operators in its service area, focusing on local engagement and support for the hobby. While the QSL.net hosting platform indicates a 404 error for the specific page, the club's stated affiliation with the _ARRL_ and its designation as a _Special Service Club_ suggest a commitment to public service, education, and promoting amateur radio. Such clubs typically engage in activities like license classes, field day operations, and emergency communications support within their local communities.

ARI section Taranto

Delta Electronics Manufacturing, a global manufacturer, specializes in _RF connectors_, adapters, and cable assemblies, providing custom interconnect solutions with superior performance. Their Advanced Vertically Integrated (AVI) global facilities emphasize efficiency, quality, flexibility, and cost control across their product lines. The company serves diverse industries, including broadcast and audio, test and measurement, military, aerospace, and public safety communications. For instance, Delta supplies RF interfaces for military aircraft, satellite launch vehicles, and missiles, maintaining a long-standing QPL supplier status. Their field-tested RF interconnects are also crucial for two-way radios, base station equipment, and antenna systems in public safety applications, ensuring reliable performance in critical communication infrastructure. Delta's solutions extend to commercial aircraft and semiconductor manufacturing, where their RF interconnects power etch equipment, deposition equipment, and chip testing systems worldwide.

Product specialist for semiconductors and electron tubes based in Belgium

Ham radio club Decatur Illinois