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50 MHz Antennas by DF9CY (4 & 6 Element)  ^pop - Two well performing 50 MHz antennas designed with W7EL EZNEC along to many other antenna projects and related articles

Thracian Rose Club - The Thracian Rose Club has been created in the Roses' City Kazanlak (Bulgaria) in 1993. Its main goal is to promote contacts within the radio community members (HAM, CB and SWL).

November Echo International D.X. Group. - 11 metres d.x. group northeast england.

Sri Lanka Call Book - 4S7 call book

Campania Island Award - D.I.C. Diploma Isole Campane from Italy

The Geratol Net - The Geratol Net sponsors the 75 Meter 2-letter Extra Class WAS Award, as well as over 30 endorsements and other awards.

Triple H Net - Amateur Radio's late night net on 40 meters

DXCC spreadsheet - Excel spreadsheet that helps you trace your status of DXCC entities. You only have to fill the cells with your worked and confirmed entities and the totals will be automatically updated. You don't have to make any calculation

AD4C Web Page - About ham radio hobby with hundreds of related links

California Amplifier - manufacturer of solutions for worldwide wireless broadband communications

Olivia Modes - Olivia is a family of MFSK modes with a high redundancy Forward Error Correction system similar to MT63. General description and protocol information by w1hkj

Current Aurora status - The Aurora in near real-time from Sweden

Aurora Status from Alaska - The aurora today, ground view from alaska

Mt. Wilson Observatory - Magnetogram, Dopplergram Intensitygram by Mt. Wilson 150-Foot Tower Data Images

Stanford Solar Center - Providing solar on-line activity resources for the joy of solar science exploration

Sunspot answer book - Mr Sunspot's Answer Book National Solar Observatory Sacramento.

The Sunspot Cycle - Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.

NASA Sunspot Cycle Predictions - Nasa MSFC predictions on the behavior of current sunspot cycle.

Solar Flare and sunspots - Understand the connection between solar flares and sunspots.

Scanlist - French manuals for HF-VHF-UHF radios.

Isis Electronics (Cheltenham) Ltd - UK Sales of used RACAL, Watkins-Johnson, Icom, Microwave. Large Qty Racal 1792 in Stock. Spectrum Analysers, UHF,VHF Generators, Network Analysers, Bus Switches.

Speedx - Shortwave and DXing Web page

Radioman - Freeware dos VHF/UHF Logbook morse code facility, kenwood transceivers interface, moontracking, distance and bearing calculators by DF9CY but discontinued and unsupported

Pathloss Calculation and EME - Java free space pathloss calculation and EME

EMI Calculator - Does your Amateur Radio system comply to the EMI rules ? (German values implemented)