ism balun design

Amateur Vertical Antenna Calculator  ^{updated  pop} - This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen.

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."

Citizens Band Mid~West - A very attractive and informative site designed to promote the professional operation and knowledge of Citizens Band Radio

Whiskey Alpha DX group - "Formed in 1996 in the USA, the ""Whiskey Alpha"" group has members in a few different country's and is growing every day. We provide all members with a ""personalized"" QSL card design. Membership has no annual dues, and is for life."

FRR - Romanian Amateur Radio Federation - Federatia RomÈna de Radioamatorism (Romanian Amateur Radio Federation)- The national non-governmental hamradio association in Romania

The WireMan - Your source for coax, connectors, wire, baluns, and other certified quality wireman products.

Radioworks - Source for high performance wire antennas, Current-type Baluns, Line Isolators, quality wire antenna parts and accessories.

Comet Antennas  ^pop - Distributor for COMET and MALDOL brand antenna products designed, manufactured in Japan. Distributor of DAIWA brand RF SWR/power meters and switching power supplies.

E-Z-O Antennas - A new beem antenna design improvement over the cubical quad

Centaur Electronics, Inc. - Baluns for amateur and commercial radio.

INRAD International Radio - Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

Almost all digital electronics - This site is dedicated to electronics hobbyists, engineers, and Radio Amateurs interested in circuit design, homebrew and kit projects.

International Components - International Components Corporation has an extensive range of electronic components consisting of audible signal devices, speakers, microphones, capacitors, electron tubes, connectors, and accessories designed in recognition of the diversity of applications and special characteristics encountered by designers in today's complex world.

SPACEWARN Bulletin - The SPACEWARN bulletin is intended to serve as an international communication mechanism for the rapid distribution of information on satellites and space probes.

NA7EM QSL Card design - Offer custom design and printing of extremely high quality, very affordable, QSL Cards.

Antenna Maker  ^{updated  pop} - Antenna design program for Quads, Yagis, Inverted Vees, J-poles, Trap Dipoles and more.

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

DOS programs by g4fgq - Small collection of DOS antenna design and RF calculations programs

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.

DXbase - Professional Logging Software for Windows 95/98/NT. A separate version is available for DOS. Full featured logging, HF radio control, Internet Packet, VHF Packet, Label Designer, Report Designer, and a lot more.

DX 4 Win  ^pop - DX4WIN is an easy to use, yet powerful logging program for every ham. It has been designed for the the serious and the casual DXer.

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

MRX Software - MRX Morse Code for Windows 9x/NT is a program designed to teach morse code receive and transmit using the benefits of Multi-Media PC technology

Universal LF/MF Preamplifier - "A ""Universal Antenna Preamplifier"" design, in Web page form. Works with long wires, loops, or whips. For longwave and medium wave."

40MHz Frequency Counter Module - Design for a very low cost 6-digit frequency counter module using of the shelf components