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A home made project for an ATV RF power amplifier

A list of active Amateur Radio satellites grouped by FM SSB/CW and satellite monitoring

Construction of 28 MHz to 144 MHz Transmitting and Receiving Converter by KP4MD

Flag Antenna construction and test results by WA1ION

Great pages about EME, including how to get started in EME

The IZ3MEZ Web DX Cluster presents real-time amateur radio DX spots across 20 distinct frequency bands, spanning from **LF (2190m)** at 135.7 kHz up to **SHF (QO-100)** at 10499 MHz. It displays the DX callsign, frequency, DXCC entity, spotter callsign, and spotter DXCC entity, along with any accompanying comments. The cluster also lists various operating modes such as CW, RTTY, FT8, FT4, FT2, PSK, and SSTV, and supports special operating activities like QRP/P and specific award programs including IOTA, POTA, SOTA, WCA, and JOTA. The cluster's interface provides a dynamic feed of the latest 50 spots, continuously updated with precise timestamps. It offers direct **Telnet protocol** access for users preferring a command-line interface, with configuration instructions provided. The resource also integrates with other spotting networks like RBN and PSK Reporter, enhancing its utility for DXers and contesters seeking propagation information and activity monitoring across a broad spectrum of amateur radio frequencies.

CMARC has been serving the greater Columbia and Montour region for over 25 years.

Minnesota Amateur Radio (MARC)

IOTA from Island

About the clemens match system

Goshen, Indiana

Operating the UoSAT-2 (OSCAR-11) satellite, launched in 1984, presents unique challenges due to its age and current eclipse schedule. This resource provides a historical archive of news, telemetry data, and specialized software for decoding its 145.826 MHz FM beacon. It includes tools like _CTERM_ for terminal emulation and capture, and U2TM for processing ASCII telemetry, enabling hams to analyze the satellite's health and performance. The site also offers audio samples of the beacon and S-band signals, along with details on hardware and software decoders. Reception reports are actively solicited for the satellite's intermittent transmissions, which occur for less than an orbit every 21 days during its eclipse period. The site details how to process raw telemetry data, including instructions for skipping initial frames to improve decoding accuracy with U2TM. It also provides software like SATILL for predicting solar eclipses and tools for determining the satellite's spin period from magnetometer or solar array telemetry, offering insights into its operational status despite its advanced age.

Work 19 departments of RepAblica Oriental del Uruguay

A collection of articles related to my pursuit of the hobby of Amateur Radio.

Converting the GN9120 Wireless Bluetooth Interface for Amateur Radio

The DXCC World Map web application is a modern and interactive mapping tool designed for shortwave radio enthusiasts. It showcases a high-quality world map along with the Sun's position, sunrise and sunset times, the terminator, coordinates, QTH locator, azimuth, azimuth map, current DXCC list, Aurora, and WWV Geophysical Alert Messages. Additionally, it provides the SFI, X-Ray, Kp, and Ap indices.

QSL info, photos gallery and more..

Information about traffic on SHF, 10GHz band

The bay area amateur radio club (baarc) is a non-profit organization of people interested in amateur radio in the bay area of michigan.

UV-3R reviews at eham.net

Drake Mods for R4B and R4C models by VE3EFJ

A Horn antenna by WE3HHT

Radio Amateur WEB TV, Streams for and from ATV repeaters, Live streams for and from events, Amateur Webcams from holland

DX-Expedition 1996 8Q7BU and personal info

Contest team from Aland Islands

Managed by k3tkj, offer to ham radio operators free space for web pages and email forwarding.

Ramona Outback Amateur Radio Sociey

San diego dx club

This simple beverage ntenna is easy to make, easy to setup, and it offers great RX performance.

A forum thread about tuning with the Kenwood TL-922 TL-922A Power amplifier

Icom PW1 Linear Amplifier, setup and configuration PDF file

The Wireless Society of Southern Maine is a ham radio club serving the Portland, Westbrook, Gorham, and Scarborough, areas in Southern Maine.

The program consists of tabbed pages for various antenna and transmission line calculation. You can compute the values for an inverted L network that will allow you to match the 50 ohm output of the radio, or you can compute the necessary length in the units of choice for a 5/8 wave vertical for 10 meter band.

Eham reviews of the dual band kenwood TH-D7a/e series handheld transceiver

Lietuvos Radijo Megeju Draugija

First released around 1995 and significantly redesigned as QWTelnet 2, this software provides a dedicated interface for monitoring DX-Cluster traffic via Telnet. It integrates a **SOTAwatch parser** with configurable audio alerts, allowing operators to receive notifications for specific search patterns in DX-Cluster remarks without constant screen attention. The application also supports parsing for **GMAwatch (German Mountain Award)**, providing alerts for German Mountain Award activations. QWTelnet 2.4.0, released on 07-APR-2012, runs on Windows (tested on W7) and is distributed as a ZIP file containing the `qwtelnet.exe` executable. It does not require a formal installation process; users simply extract and run the program. The software can display DX information for single bands, integrate with the Reverse Beacon Network, and link to external web resources for DXCC and SOTA information. It also supports local reference files for IOTA, WFF, and RDA awards, which users must source and place in the `qwtelnet/files` directory. For IOTA data, users can convert `IOTA.CSV` from UCX-Log or `DX4WIN_IOTA.TXT` into `iota.csv`. WFF and RDA reference files are directly sourced from their respective websites.

The Red Oak Victory Amateur Radio Club (ROVARC), an ARRL affiliated club, was incorporated in 1999 as a non-profit club.

144 MHZ to 28 MHZ 2nd Down-Converter for AO-40 Sat

How much better is an N over SO-239 at VHF/UHF, a discussion topic at eham

Wantagh amateur radio club, wantagh, long island, new york. Our club is one of the oldest amateur radio clubs, if not the oldest, on Long Island.

Spanish ham radio chat

XU7AAV, ZD8VJ, ZD7VJ, 3D2VJ, T20VJ, A35VJ, 5W1VJ, AH8F, ZK2VJ, 8Q7VJ, V47VJ, 9G5VJ and more

This Club has long history in serving Henry County.

An Arduino based remote monitoring system. The Remotino is a remote monitoring system based upon two Arduino Nano units RemotinoSampler and RemotinoViewer that are connected

Turkey Network List, Turkish bulletins and Packet downloads.

Arizona contest club for big guns, little pistols and cap guns, from experienced to new contesters.

This is my small station here in the isle of La Palma, Province, S.C. Tenerife.

Meteorscatter, Tropo, Es

DStarQuery was written to provide a universal query mechanism for Icom D-STAR enabled radios with a low speed port.