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PA3FXO projects - Contains didimodes, antenna projects, DX info and lots more

W0KPH EH Antenna tests - Various tests and designs, with photos of home made EH Antennas,simple and networked, and also sone CAN Antennas.

ARRL: US frequencies allocation - Transmitter power limits and frequencies allocation by band

YC5NBX Jaka Priority listing - Simple Homebrew HAM blog from indonesia

Golden Days of Dx'ing - For the Deserving and True-Blue Believers! Meet with some Extraordinary Personalities & DXăciting Exploits from the Thrilling World of DX'ing.

The DXZone.com Classified Ads Priority listing - Free classified ads service provided by dxzone.com

World Time Zone Map - world Time map in pdf format available for download

NM5K Mark - Solar image and activity

Radio Astronomy at the University of Indianapolis - Site provides educational information about radio astronomy. Radiotelescope data from their project is posted on the Web in real time.

Australia Telescope Compact Array Home Page - This is the main page for the Berkeley-Illinois-Maryland Association (BIMA)

Caltech Submillimeter Observatory (CSO) - A 10.4-meter diameter, submillimeter spectrum telescope. Situated at the top of Mauna Kea, Big island, Hawaii.

FCRAO - A 15-meter diameter, submillimeter spectrum telescope. Situated near the summit of Mauna Kea, Big island, Hawaii.

The Very Small Array (VSA) - in Tenerife (Canary Islands). Designed to study fluctuations in the Cosmic Microwave Background (CMB) thought to originate from the period immediately following the big bang. Operated by Cambridge and Manchester Universities (UK).

World satellites tracking - SWL Utility list frequencies satellites SWL liste de frequences satellites

Azimuthal Equidistant Projection - Online map creation using AZ_PROJ

RigPix Database - Images and technical details of thousands of transceivers, cb radios, rotators, rf amplifiers scanners and accessories, by SM0OFV

SpotCollector  ^updated - A free application that captures DX and WWV spots from up to 5 internet clusters and a local packet cluster. DX Spots are merged and stored in a Spot Database on your PC, enabling you to monitor, sort, and filter them in real time; known LotW participants are highlighted, as are needed stations. WWV spots are plotted to show SFI, A, and K over the last solar revolution.

SSTV Pal Multimode - SstvPal Multimode, predecessor of EasyPal not supported anymore by Erik Sundstrup

Multi-SETI@Home Monitor - A graphical add-on package to monitor seti@home activity that may be running on multiple computers over a network or multiple instances on the same computer. Runs on Windows or Linux.

The G0GJV Contest logging system - VHF contest logging program particularly aimed at UK/RSGB contests, although others may find it useful.

Beam Aim - Draws a world map centered on your QTH. Type in a DX station's call sign to get the beam aim azimuth and distance to the station.

SSTV-Sites - Windows software that monitor web-sites which have SSTV images uploaded to

DXCluster for iPhone  ^updated - DXCluster let you know in real time who is on the frequencies and where it was listened the last time. It let you create filters to only see which frequency/CQ Zone/ITU Zone and/or Country and after that you can have an alarm corresponding to a specific Zone or a specific country that raise a popup

Yaesu FT-101 pics - Images of Yaesu FT 101

A secure power supply - Dchematics and photos of a secure power supply (short-cut, Rf feedback, high voltage etc.) by iz7ath