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A family of wire beams by G3TXQ

Ten-Tec Pegasus reviews aka Jupiter

One of the oldest emergency traffic handling nets on amateur radio

Australian website about APRS

Reportage of the CQWW CW contest in 1998, with full history of the event and photos of equipment used.

4x14-(28) Element Cross-Yagi 28-Ohm DK7ZB

Just a single page describing my self as long some others interesting links.

Personal web page with links

X7 antenna pictures during installation and report on first contacts.

Satellites, mir, atv and personal information

29th SEANET Convention 2001 is in Kota Kinabalu City, Sabah, Malaysia.

Connecting a Yaesu MD-100 dynamic desktop mic to the Kenwood TS-850

A stepper switch controller made with arduino by N3OX

"The CW Awards are issued by the CWSP ""Grupo de CW de Sao Paulo"" Brasil"

Map of Brazilian prefix call areas

KC0DMH's **amateur radio homepage** provides a personal insight into the station and activities of Jonathan and Sara Imberi. The resource details the relocation of their online presence from QSL.net to a privately funded server, citing increasing site size and traffic volume as the primary reasons for the move. This transition indicates a commitment to maintaining a robust online presence for their ham radio endeavors. The site's move to **ham-shack.com** reflects a common progression for popular amateur radio personal pages, where growth necessitates dedicated hosting beyond free services. The call for donations suggests an effort to sustain the operational costs associated with a private server, ensuring continued availability of their content. This evolution highlights the dynamic nature of personal ham radio web presences and the community support often involved.

Designer and supplier of tower reinforcement systems to the wireless industry.

The MC3423 can protect sensitive circuity from power supply transients or regulator failure when used with an external "Crowbar" SCR.

Baycom modem, The famous "PMP" (Poor man packet!)

One of the oldest amateur radio clubs in Canada, the E.K.A.R.C. is a very active community member, participating in a number of events each year.

DXpedition to Guadeloupe 1998

All about me, QSL's, Contest, IIA and IOTA's DXpeditions, cool links and much more

Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converter

SV1DNW personal web site

Reports indicate the PA1RBZ DX Cluster, previously accessible via telnet at pa1rbz.dyndns.org on port 9000, is no longer operational. The QSL.net hosting platform displays a 404 error, indicating the specific page or file for the cluster's web interface or related information is missing. This service was designed to provide amateur radio operators with real-time DX spotting data, facilitating long-distance contacts across various bands. The cluster's primary function was to aggregate and disseminate DX spots, allowing users to monitor current propagation conditions and identify active stations. Such systems are crucial tools for DXers and contesters, enabling rapid response to new openings and rare DX entities. QSL.net, which hosts over 30,000 amateur radio websites, provides these services free of charge to hams, relying on user donations for operational continuity.

K1JJ presents a compilation of insights regarding vertical radial ground systems, specifically applied to 160m vertical arrays. The resource details 19 distinct observations and recommendations, emphasizing that ground radials primarily reduce ground losses rather than influencing pattern formation. It explains that RF current flows inefficiently through average soil, necessitating copper radials to create a low-resistance path back to the antenna base. The content suggests that **50-60 radials** are generally sufficient to achieve optimal efficiency, with diminishing returns beyond that number, and that radials should be laid on the surface for best performance. The discussion also addresses practical aspects such as wire gauge, installation techniques using 'U' shaped staples, and methods for connecting radials in multi-element arrays. It highlights the importance of radial length, stating that 1/4 wave radials are a crucial minimum, and that for 160m, radials should be at least _100 feet_ long. The resource critically examines the efficacy of elevated radials versus ground radials, noting that while a few elevated radials may suffice for VHF, HF applications, particularly on 160m, require extensive ground radial systems to efficiently collect RF currents in the near field. It also touches on the impact of radial systems on parasitic elements and the significance of symmetrical radial patterns for minimizing losses. Further practical advice includes wire type recommendations, proper soldering and weatherproofing techniques for radial connections, and considerations for integrating steel towers into the ground system. The author shares personal experience with installing 60 quarter-wave and half-wave radials under each of three in-line verticals, expressing satisfaction with the results.

First started in the early 80's by a small group of Hams that resided in Cle Elum, Washington.

Contesting, IOTA, DXPeditions, DX, and much more.....worth a click!

TBNoticias dx newsletter in spanish

The Texas DX Society is an organization of radio amateurs in Houston, Texas who have a primary interest in DX chasing and contest operating on HF, VHF, and UHF.

Club of Amateur Radio Operators with members from Indiana, Kentucky and Illinois.

Combined 432 MHz High-Pass - 144 MHz Notch Filter By Bertrand Zauhar, VE2ZAZ

A vertically-polarised VK2ABQ Antenna for six meter band

The Tri-County CW Amateur Radio Club, operating under the callsign _W3TCW_, is situated in North Huntingdon, Pennsylvania, just southeast of Pittsburgh. This organization extends an open invitation to all licensed amateur radio operators, regardless of age or experience level, to participate in its activities and community. The club maintains a web presence detailing various aspects of its operations, including a calendar of events, a member roster, and contact information. It also provides resources related to _VE Testing_ and links to other local clubs and the _ARRL_ section website. Historical content, such as information from _Field Day 2008_, is also referenced.

TACLog offers a distinct approach to contest logging for **VHF/UHF/SHF** operations, diverging from the rigid input formats often found in other logging applications. This software prioritizes operational freedom, allowing contesters to input data in a sequence that suits their workflow during a fast-paced event, rather than being constrained by predefined field orders. It's particularly tailored for those participating in contests governed by **Region 1 rules**, ensuring compliance with established regulations. The program's design focuses on practicality for serious contesters, providing a robust platform for managing contacts. Its support for the EDI format is a significant advantage, streamlining the process of submitting logs to contest committees and facilitating data exchange within the amateur radio community. My experience with various logging tools confirms that flexibility in data entry can dramatically improve efficiency during multi-operator or high-rate single-operator contests, where every second counts.

High speed meteor scatter and contest information

A general interest amateur radio club where all hams are welcome

NDXA Nippon DX Association supports major DX-expeditions. DX news and updates from Japan

Expanding tx range of a TH-D7A

The Giles Amateur Radio Association, Inc., located in Giles County Virginia was founded on May 10th 1992

A non-profit organisation devoted to the preservation of early radio equipment and associated historical information.

About the clemens match system

This dynamic DX Map aggregates various resources that will help radio amateurs to operate their stations in search of long distance contacts, DX. HamDXMap displays current MUF values and foF2 critical frequency values around the globe.

An introduction to RF mixes and their main characteristics, article with diagrams and illustrations by VA3IUL

Serving Greater Waterbury