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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

Ham Radio Market - A web forum based classified ads service

Tube Collectors Association - Tubes and antique radio buy and sell classified ads

Sri Lanka Call Book - 4S7 call book

C6AMS Bahamas DX Pedition 2010 - Online log and live audio from NA6M/C6AMS, N5BW/C6AMR, K2CK/C6ASH, K5AB/C6AAB and W5ETY/C6ATY will be active from Eleuthera Island, Bahamas (IOTA NA-001)(Grid FL15)9 July to 25 July 2010. Operating on 160-6m CW, SSB and Digital Modes

Pacific IOTA Numbers - IOTA Designation for The Hawaiian Islands

Land Forces Amateur Radio Group - Australian Amateur Radio Groups for ex-service personnel

PD2RFU Jeroen - PD2RFU by Jeroen GoedĖl Fox United, Formula 1, Motors, links and all about ham radio

Mailing list DXFR Priority listing - Mailing list DXFR. Liste DX francophone traitant de la radio et DX 11 mĖtres.

California Amplifier - manufacturer of solutions for worldwide wireless broadband communications

Banten Antennas - Land communications and marine antennas

Larsen Antenna - Complete selection of portable, mobile and base station antennas in frequencies from 27 MHz to 5.8 GHz. Radiall/Larsen also has a strong presence in custom OEM development. Radiall/Larsen Antenna Technologies is a subsidiary of Radiall.

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.

Latest Satellite Pictures - Visible images and loops, infra-Red images and loops, water vapor images

National Weather Service - Some little known facts about the NOAA Weather Radio system

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