dxzone rating

Taiwan Callbook - Taiwan amateur radio callbook

The National Traffic System - ARRL National Traffic System for routing formal written message traffic

HF Hamtrader Nes - Trader net frequencies

The Northern California Net - Amateur radio traffic nets serving the northern California and Nevada areas

AM Nets - The AMers nets from HF to VHF

Aurora current status - Current image of earth's aurora

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

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

Auroral Activity - Plots showing the current extent and position of the auroral oval at each pole

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

Ionospheric Group - UK RCRU ionospehric group researches

Today Space Weater - Presented by the Space Environment Center with plots and images updated daily.

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.

Digi key - Digi-Key offers over 1,000,000 electronic components from more than 360 manufacturers.

Free Radio Weekly newsletter - DX newsletter headed by Hans Johnson

RTTY Press Freq list - RTTY press services in english sorted by frequency

Radio Icons - A .ico file library containing lots of icons for Windows, regarding Amateur Radio, to customize your desktop

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

AREPS propagation programs - Collection of various propagation software by Space and Naval Warfare Systems Center, San Diego, Atmospheric Propagation Branch

RF prop  ^pop - RF propagation software

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