history of radio tubes

G3SEK's Amateur Radio Technical Notebook - A lot of good informations concerning antennas, filters, moonbounce, and circuitry data.

T2FD The Forgotten Antenna  ^pop - "Some have called the T2FD a ""squashed rhombic"" antenna. It does bear some design similarities to the non resonant rhombic, but theoretically it is admittedly inferior. However, the T2FD performs well in a modest amount of space."

Folded Dipole  ^pop - All about folded dipoles, a variation of the dipole is an antenna called a folded dipole. It radiates like a dipole but sort of looks like a squashed quad.

Maik Uniform France - New French MU website with many DX News , Logs , Softwares and more.

YO5OFJ Istvan's Ham blog - yo5ofj's Istvan Vanyi Ham blog

Nienberge Amateur Radio Group Germany - "The Nienberge Amateur Radio Group a subdivision of the DARC - German Amateur Radio Club; our group's number is ""N 46""."

CHICAGO FM CLUB, Inc. - RADIO EXPO, a nationally-recognized radio exposition, is sponsored by CFMC. This hamfest offers commercial exhibits, forums and a large flea market.

Hamvention - The Dayton Hamvention is the world's largest amateur radio gathering.

Cleveland HAMFEST - Amateur Radio and Computer Show in BEREA, OHIO

OZ5DK Thomas - See my Ham radio station and some pics of my self.

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

Pryme - Full line of VHF/UHF handheld and and mobile transceivers and accessories

DX Packet Cluster WebNet - Your DX Cluster Connection, infos, technical procedures, files and software

Funkenhauser's WHAMLOG & Mediumwave DX Links - Free WHAMLOG files download page, medium wave (AM/BCB) resources, homebrew loop antennas, radio receivers, DX lists, DXpeditions, ODXA MW Notebook.

HAM Radio Java/JavaScript - Amateur Radio Webmaster source for Java and Javascript radio related application

RXClus - RXCLUS is a free amateur radio software especially designed for the DX'ers and SWL's wanting to receive the informations transmitted by packet radio on the DX-cluster system. It supports also telnet protocol.

LogWindows - Log X  ^updated - Log-X formerly LogWindow is a Windows based software program designed for the specific use of Amateur Radio operators to keep a log of the contacts that were made with other radio operators around the world, designed to be used in Amateur Radio contests, Emergency situations, and for general record keeping of conversations. By SCO Inc

XMLOG freeware Logbook - XMLog is an amateur radio logbook system for Windows and Windows NT.

Super Morse  ^pop - "Super Morse is the original comprehensive Morse Code training program for the PC. Super Morse permits the user to learn the Morse characters in a very orderly way using several different methods, including one unique to Super Morse; build speed with special exercises; by WD5CID"

KaGold and PkGold - Performance Software for AEA and Kantronics TNCs Recognized Leader in Packet Amtor RTTY Baudot Pactor Gtor ASCII CW Morse support

AR Cluster - AR-Cluster is a ham radio packet cluster software supports both node and user connections using RF and Internet. Currently available in Standard and Enterprise version.

BTL Blaster TeLetype - High performance RTTY reception and transmission software, need a Sound Blaster compatible sound card.

Charly 4.0 - WRAASE Slow-Scan-Television (SSTV) commercial windows software, need an external hardware, SC-4 to work.

YC156 Conversion - RF Amplifier project modified the original chassis to use a 4CX1000A instead of a YC156 triode

Batteries - some thoughts - What sort of batteries when operating mobile, choosing proper battery technology