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What tuners do - How atenna tuners works and what are real effects on feed lines and maximun power output by G3TXQ

SD Venezuela - SD venezuela

SD French Magazine - SD Franch Magazine

UALR Call Sign Search - University of Arkansas at Little Rock's, U.S. Amateur Radio Callsign Lookup Page.

Canadian Amateur Radio Callsign Database - Search engine is provided by Radio Amateurs of Canada.

Jefferson County Amateur Radio Club - Jefferson County Amateur Radio Club - Arnold, Mo

UCSD - University if California San Diego Ftp site

Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.

Meteoritos y Recursos GeolĄgicos del Espacio - Spanish only website with mail list and meteor showers reports.

NASA Astrobilogy - Lots of cool documentation from the astrobiology NASA division, with references to meteors observations

Digital Communications Conference - Hams convene each year at a Digital Communications Conference to evaluate and further the state of the art. TAPR's webserver provides conference papers from previous DCCs as well as information about the upcoming DCC.

ON4VT sstv pages - ON4VT SSTV and personal page, includes a large software review, introduction for beginners and webcams showing sstv on the net

Near-Realtime MUF indicator  ^pop - This is a highly informative map that can be used by amateur and professional radio communicators to determine maximum usable frequencies for any world-wide path at the indicated UTC (Zulu) time.

NOAA Dailiy Reports - Report of solar & geophysical activity

Propagation Forecast by AD5Q - 11 Years of monthly propagation reports from February 1988 to January 1999 by AD5Q

Propagation Reports - Latest WWV propagation Reports, Updated Every 3 Hours

Popagation studies committee Priority listing - This page is about the RSGB's Propagation Studies Committee, its work, services and current projects, together with guides to where to find more about matters relating to propagation on the Internet at all levels from introductory to professional. Watch this space!

A & K Graph by WN6K - Latest solar charts by WN6K, wit A & K Indexes.

SHF MICROWAVE PARTS Co. - Microwave parts for ham radio and experimenters.

Antique Electronic Supply - Antique Electronic Supply has a complete line of vacuum tubes. We feature Svetlana vacuum tubes for amateur radio, broadcaasting and audio applications. We have over 700,000 new old stock tubes to choose from. We also have a complete line of transformers, featuring Hammond and One Electron. Capacitors, resistors, parts, books, etc. Most orders shipped within 24 hours. Major credit cards accpeted. E-mail for free catalog!

MEI Software - The file MEI-10.ZIP contains educational software to evaluate antenna arrays of up to 8 elements. Two types of arrays may be studied: 2D planar arrays (Yagi-Uda, Circular, etc., up to 6 elements) and colinear arrays (up to 8 elements.)

Yagi Sterss - A full featured, graphical, user friendly program that performs structural analysis on horizontally polarized yagi antennas constructed from round tubing. YS can work in Imperial or Metric Units, and is likely to tell you more about a yagi antenna than you ever thought you needed to know. YS has been used by commercial manufacturers and premier station builders for over a decade by Kurt Andress, NI6W

Quickyagi - This is the place for downloading the latest DOS version of Quickyagi the freeware yagi modeling program with auto-design & optimize.

PacketCluster DX statistics - This program extracts statistics from a dx.dat file to show numbers of spots for each country on each band

Micro-G2b Rotor control - This program uses a Z-World Micro-g2b board to control up to 4 rotors.