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Antique Radio Museum - Bellingham Antique Radio Museum, private collection gathered over the past 25 years by Jonathan Winter.

Alfa Tango Sweden - The official AT-site of division Sweden with updated info about activations and members. A must-visit if you want to keep up-to-date about Swedish AT-members and activities!

11-meter.com - Activation logs, IOTA, projects and more.

IOTA Activation calendar - IOTA operations announced to RSGB IOTA being expected to be active today

CVARC - Conejo Valley Amateur Radio club AA6CV CVARC is an ARRL special service club.

Mountain View Amateur Radio Association MVARA Priority listing - An emergency service provided to the city of Mountain View, California and the surrounding communities in time of need.

Western Illinois Amateur Radio Club - WI ham club partecipate in Field Day, sponsers an annual Swapfest held in August, and provides various repeaters.

Delaware Valley - DVRA Hamfest, by Delaware Valley Radio Assoc.

Signal Engineering - Signal Engineering technologically advanced antennas with modern design and construction technique. Up to date information about current line of high performance 10 and 11 meters antennas.

P. C. Electronics - Manufacturer & dealer for ATV gear. Catalogue and application notes available free to licensed Amateur Radio operators.

Advanced Communication Sys - Repeaters, transmitters and receivers manufacturer for ham radio and commercial applications

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

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

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

Understanding Solar Indices - By Ken Larson KJ6RZ, a complete guide to understanding soloar indices and values.

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

Radio World - Radio shop in nevada

DirLog - DirLog is freeware CB 11 meters logbook available only to Alfa Tango Members

Dmorse & WDmorse  ^pop - DMORSE freeware teaches Morse Code in simple steps. It is useful both for those starting to learn morse and for those who wish to increase their speed. Dos and Windows versions available.

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

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

Small Wind - Advice from an Expert features some of Mick's Windletter articles on a variety of wind energy topics.

Resistor values by color - Calculate Resistor Values from Color Codes

Speaker Design - Java applet to design speakers

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