Antennas/Fan Dipole
A fand dipole antenna home made for the 7,14,50 MHz. This article descbribes how to homebrew the antenna, hot to setup and some SWR measurements.

Technical Reference/Amplifiers/HF Amplifiers
Alpha 87A Amplifier Fault 1 and the downlevel amplifier

Home Brew Fold Over Tower, Online Live Azimuthal map, Shortened 80m Antenna, Choosing the correect Ferrite, Common Mode Currents on Coax, Receiving the QO-100 GeoSat

Antennas/Maria Maluca
Antenna construction project and report on efficiency and SWR measurement by DL1RLB, project implemented in May 2008

Antennas/40M/40 meter Dipole Antennas
A simple portable dipole antenna for the 40 meter band using a total lenght of 18 meter. It can be used for 80 to 10 meters coverage using a antenna tuner.

Radio Equipment/HF Transceivers/Yaesu FT-450
MARS modification instructions for the Yaesu FT-450D

The best QSO Mapping toos will help you represent your contacts on a world map, and to share them with your fellow hams.

A Micro QRP Transceiver Project, A Short Course On Baluns , EFHW autotransformer comparison, MiniTioune receiver project, Building equipment for Quatar OSCAR 100, Amateur Radio Artworks by K4ICY, QO-100 Basic Information

Internet and Radio/Sounds
A collection of audio recordings of some DX Peditions used as case studies to evaluate dxspedition operatios behaviour and calling stations. These audio files are excerpts from real pileups recorded directly off the air in MP3 format

Antennas/Magnetic Loop
Amateur radio loop antenna project using a Comet CVBA-500BC vacuum variable capacitor.

Multi Band Slinky Doublet Antenna, SWR ANTENNA ANALYZER + WSPR TX, How to make a MMDVM Digital Repeater, Solar power in a Can, Velocity Factor of Coax Cables, 5W CW Transceiver From QRP Labs, Quatar Oscar 100 Presentation by AMSAT DL, 5X3C Log Online, Oscar 100 Bandplan, SG Laboratory Ltd

DX Resources/DX Peditions
DX University publishes an operating guide for DXPeditions with 13 hints and tips on managing pileup

Operating Aids/Maps
With this tool it is possible to create QSO maps overlay on Google maps there each QSO get a line from the home location to each DX location. The creation will only use complete locator in the 6 characters format.

Software/Audio Recorders
Pass Recorder is a small application that records audio from satellite passes based on tracking data it receives from the commonly used SatPC32 application

Every April 18, radio amateurs worldwide take to the airwaves in celebration of World Amateur Radio Day. It was on this day in 1925 that the International Amateur Radio Union was formed in Paris.

Operating Modes/Morse code/High Speed CW/HST Championships
16th HST World Championship Organized by Bulgarian Federation of Radio Amateurs September 2019

Antennas/Satellite
A 3.2m EME dish project that provides a better performance on 1296 MHz (10+dB sun noise vs. 6dB with my 432 array) and an even better performance on 2304 MHz

Operating Modes/VHF UHF
Free to download PDF book about operating The VHF/UHF bands written in the early to mid-1990s by a team of experienced VHF/UHF DXers and equipment developers, in an effort to pass on their knowledge and stimulate further developments.

Operating Modes/Morse code
The CW Projects and Resources of Mike Maynard, K4ICY. Includes a brief history and overview of Morse Code and many interesting resources on telegraph