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Modifications and improveents for the realistic DX-100L HF receiver by ON6MU

The GMDX Group Internet site provides DX information for Scottish and International Amateurs as well as resources for IOSA

After you have build this antenna, you may not need anything else. This article shows how to build a VHF j-pole antenna and how to protect it by inserting it into a PVC tube, the correct way.

An Arduino based CW contest keyer addon, ideated and designed for the use in conbination with the K3NG Arduino keyer open-source firmware.

Collection of various Dubus articles in PDF format

Schematic diagram of the VLA 200 power amplifier by RM Italy

An high gain long yagi antenna, seven elements, for six meters band

The East Tennessee DX Association (ETDXA) is an amateur radio club that welcomes all experience levels. They focus on a variety of activities including DXing (long-distance communication), contesting, and general ham radio topics. Their goal is to create a community of radio enthusiasts who can learn from each other and enjoy the hobby together. They also aim to promote the art and science of DXing while representing East Tennessee on the international amateur radio scene

Picture taken from official manual with notes on tuning stubs for each band

The resource provides specific information regarding amateur radio operations from various French islands, focusing on geographical and visual data. It includes photographic documentation of locations and detailed maps, which are crucial for operators planning DXpeditions or seeking to understand the unique challenges and opportunities presented by island activations. The content aims to support enthusiasts interested in rare grid squares and IOTA (Islands On The Air) awards. While currently under maintenance, the site's stated future enhancements include QSL card examples, which would offer practical insights into confirmation processes for these specific entities. The emphasis on French islands distinguishes it from more general DX resources, providing a concentrated body of information for a niche but active segment of the amateur radio community, particularly those pursuing island-specific operating awards.

Over 100 amateur radio beacon audio files are presented, offering a direct auditory experience of propagation conditions across a wide spectrum of frequencies, from 1.8 MHz to 47 GHz. These recordings, primarily captured by IW3FZQ and IK3NWX, document signals from beacons such as DK0WCY, IY4M, GB3RAL, and S55ZRS, providing a valuable resource for **propagation study** and **beacon monitoring**. Each entry in the list specifies the beacon's callsign, its operating frequency in kHz, and the recording operator. This compilation includes signals from beacons located in various grid squares like JN55VF, JO44VQ, and IO91IN, illustrating diverse geographical origins. The frequencies covered span the 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 4m, 2m, 70cm, 23cm, 6cm, 3cm, 1.2cm, and 6mm amateur bands. Users can listen to these recordings to identify characteristic beacon tones and observe signal strength variations. The resource also invites other radio amateurs to contribute their own beacon audio files, fostering a collaborative archive of propagation data. The last update to this collection was on March 24, 2009, indicating a historical snapshot of beacon activity. Accessing the files requires the Real Player software.

The article details a specific method for performing maintenance on a crank-up tower, focusing on cable and rotator replacement without a full power pulldown. It outlines the necessary equipment, including a 2-section extension ladder with a horn attachment and a two-piece, 6-foot steel pipe, specifying a 1 1/4-inch diameter. The procedure involves lowering tower sections onto the internal pipe to slacken cables, allowing for their removal and replacement, and also describes how to replace the rotator while the tower remains upright. Key steps involve using the pipe to support tower sections, enabling access to the cables and bearings. The author, N5AR, emphasizes safety by instructing the reader to remain on the ladder at all times, rather than climbing the tower itself. The process is presented as manageable for a single operator, with the author having successfully completed the task on a _UST TX472_ tower. Specific tools mentioned include Allen wrenches and end wrenches for cable ends and bearing bolts. The method provides a practical approach for tower upkeep, minimizing the complexity often associated with such tasks and allowing for maintenance of components like cable pulleys and their bearings.

Notes on using RG-174 Coaxial Cable at Medium and Lower HF Frequencies by John Bryant and Bill Bowers

HF DX Web Cluster from JAPAN show spots by JA stations

TN5R Congo DX Pedition - Search the online log

Kenwood TH-D7(G) and TH-D7A commands reference

The HF horizontal loop has been around for many years now. This article includes a YouTube video and discusses the reasons for looking at this antenna, its design, and its installation. There are some on-air comparisons against three regular double bazooka (coax) dipoles and the Par SWL End-Fed antenna.

The club was formed at a meeting of a group of hams on a May 1989 afternoon at Jake's Truck Stop in Bend.

eham reviews of the Yaesu FT-9000

VHF UHF SHF Toplist including DXCC and EME-Initials

The _TA Callbook_ provides a dedicated online search utility for Turkish amateur radio operators, enabling users to query a database of over 15,500 records. This resource allows for lookups based on a callsign, operator's name, surname, city, or even a specific address keyword. It serves as a practical tool for DXers and contesters seeking to identify or verify Turkish stations, facilitating QSLing and contact logging. The interface is straightforward, requiring only a single keyword input to initiate a search. Operators can also update their personal information through an integrated editing form, ensuring data accuracy within the system. The platform's data collection practices are noted to comply with Turkish Personal Data Protection Law No. 6698, specifically Article 28, Paragraph 2, Clause b, by utilizing publicly disclosed information. The database was last updated on March 6, 2026, reflecting ongoing maintenance by its creators, _TA3AK_ and _TA8A_, who collaboratively developed this essential Turkish callbook.

Showcasing a range of Morse code paddles, UR5CDX emphasizes craftsmanship in both dual and single paddle designs. Each key is engineered for optimal performance, catering to the needs of CW operators. The paddles are not just tools; they reflect the artistry of ham radio equipment. With options for personalization, including illuminated tags, operators can enhance their shacks with unique identifiers. The commitment to quality is evident in the materials used and the precision of the mechanics, ensuring reliable operation during contests or casual QSOs. UR5CDX also engages with the community, sharing insights on the manufacturing process and the impact of current events on production timelines. This connection fosters a sense of camaraderie among operators who appreciate the nuances of Morse code communication.

Europeam SWL BCL Clubs organization

Search K1N On-Line log

With all the wire you have out, you may run into a problem with static buildup on the antennas. This static may try to make its way into your receiver, causing you major problems and damage that can run into a lot of money.

The NG7M Web Cluster, maintained by W7CT and NG7M, offers real-time DX spotting information crucial for amateur radio operators engaged in DXing and contesting activities. This service aggregates DX spots from various sources, presenting them in a user-friendly format accessible via both web interface and traditional telnet protocols. Operators can monitor band conditions, identify rare DX entities, and track propagation paths across multiple amateur radio bands. This cluster supports a wide range of operating modes and bands, facilitating efficient station operation for both casual DX chasers and serious contesters. The system integrates data from the Reverse Beacon Network (RBN) and PSK Reporter, enhancing its utility by providing automated CW and digital mode spots alongside manually entered voice spots. Access methods include a direct web interface for graphical display and a telnet connection for command-line interaction, catering to different operational preferences. The cluster's data stream is continuously updated, ensuring timely information for making critical operating decisions.

Log Online for T02TT DX Pedition

The DK5YA Vhfdx Site is dedicated to the serious VHFDXer, serving the Web for more than 5 years for all of those working Aurora, Meteorscatter, FAI, EME, Tropo, TEP etc. on 50 MHZ and up.

DX Cluster server software by F5MZN

Yaesu FTDX3000 Sound card digital modes setup using internal USB interface

Sporadic-E clouds location and estimated MUF real time map by DXMAPS

Ham Radio ITU International Callsign Country Prefixes

The Swan Island DX Assn. is based in Raleigh, NC.

A special edition of AALog, optimized for the use in a lot of different contests. It can export file in Cabrillo, .SUM and .ALL files, ADIF. To use this program in CW and digital modes you need to use CwType and TrueTTY.

All about dipole antenna construction

International Organization working for a complete 11 mt. band, Radio Foundation G. Marconi's Memory

The Premier MidWest DX Convention, Illinois.

The NIDXA is an active DX club affiliated with the ARRL. NIDXA runs the W9 Incoming QSL bureau, a DX Packet Cluster, and the world famous W9DXCC convention.

GAP Titan DX 10 15 20 40 meter performance tests by AA3RL

Topband and DX recordings and sound files on 160 meters band

A simple project for an effective home made band pass filter, designed for the portable field day usage

Interesting article on how and when sleep during a contest

October 2000 Ham radio dx-pedition

PZTLog is a freeware amateur radio logging application designed for Windows operating systems, facilitating rapid **QSO entry** and management. It integrates features such as DXCC statistics tracking, a built-in DX Cluster client, and support for various digital modes including PSK31, PSK63, PSK125, and RTTY. The software provides a straightforward interface for inputting essential contact details and supports real-time interaction with DX spotting networks, enhancing the operator's situational awareness during operating sessions. The application's utility extends to contest logging, offering a streamlined approach for competitive operating. PZTLog's capability to manage **DXCC awards** and integrate with digital mode operations positions it as a versatile tool for general logging and specific contest scenarios. Its design prioritizes ease of use for quick data entry, making it suitable for operators who require efficient logging without extensive configuration.

QST Magazine, 1991 July, review of the Kenwood TS-850S 160-10 Meter Transceiver

Sporadic-E clouds location and estimated MUF real time map

Chesterfield Islands DXpedition 2000

This resource provides a unique historical audio archive of 50 MHz DX contacts, documenting significant F2 and Es propagation events experienced by PA2S (formerly PA2HJS) since 1978. The collection includes recordings of beacons and two-way QSOs with stations across North America, South America, Asia, Australia, Europe, and Africa. Specific entries detail contacts with rare DX entities such as ZS6PW, VE1AVX, C5AEH, J52US, TR8CA, LU8MBL, VK8ZLX, and various Japanese stations, often noting the mode (SSB or CW) and propagation type. The archive also highlights challenging pile-up situations and frustrating near-misses during major openings. The recordings, initially in RealAudio format for solar cycles 21 and 22 and later in MP3 for cycle 23, offer a practical illustration of 6-meter band conditions over several solar cycles. The content allows hams to listen to actual signals from different continents, observing signal characteristics like typical TEP fading from 5H3RA or strong F2 backscatter from OZ1BVW. It provides a comparative perspective on propagation effectiveness between solar cycles, noting that cycle 23, while not as robust as previous cycles, still yielded interesting openings. The archive serves as a valuable educational tool for understanding real-world 50 MHz DXing and propagation phenomena.

colombian ham radio stations,radioaficionados colombianos,dx,qsl,photos,fotos

HB9BZA's LoTW users list, originally compiled since 2005 from DX-Cluster and user submissions, now primarily leverages the official ARRL full users list released on July 29th, 2017. This resource details 228,012 calls across 340 current DXCC entities, with the latest update noted on March 2, 2026. It offers various formats, including a full list, text versions, and breakdowns by country, providing valuable insights into LoTW participation for DXers. While the ARRL's official list with "last upload" dates diminished the original list's unique utility, HB9BZA's site continues to offer statistics and user counts by country, which remain of interest. The author, HB9BZA, expresses gratitude to contributors who helped maintain the list's accuracy over many years, achieving an impressive 96.4% match with the ARRL's data before the official release. Knowing which stations are LoTW active encourages more hams to join the system, demonstrating that even rare DXCC entities like Ducie Island or Heard Island can be confirmed quickly. For instance, HB9BZA recounts a 36-minute QSL confirmation for a 3A2MW contact. The list also integrates with the RXCLUS packet radio/telnet client, enhancing DXCC award tracking by identifying LoTW participants and utilizing upload dates for alarms.