filter design

Antenna Design Lab by N4UJW Priority listing - Design and build your own Hf thru Vhf antennas.Contains pictures, plans, parts list of very popular ham antennas along with experimental types.

Beverage Antennas - So you want to build a Beverage Antenna.

The Moxon Rectangle on 2 Meters - We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.

A linear loaded vertical antenna  ^pop - Vertical antenna design by David Reid PA3HBB G0BZF

Super Loop Antenna  ^pop - Superloop III designed by Jim, W4FTU

Smithe Windom Six Band HF Windom antenna - HF Windom antenna, cover 80, 40, 20 15, and 10 meters, antenna design by K3MT

Dipole / Inverted Vee Antenna Design - Formulas To Design Your Own Dipoles And Inverted Vees

Software for Ten-Tec Radios - Radio control and logging software for Ten-Tec Radios designed with the Contester in mind.

DX For Me - DX Cluster  ^updated - DXCluster which will allow mobile usage. Now able to manage filter per bands and mode, and to save configuration for specific DX or special event stations.

bhi Ltd - Design & manufacture of Noise Eliminating speakers and modules for effective removal of unwanted noise & interference from SSB, HF, VHF, FM & UHF using new DSP technology

W3FF Antennas Buddipole - The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.

Online Cables.com - easily design your cable, pick connectors and cable, print drawing, get immediate quote and place order, all online.

IMAGINE QSL's Print Service - We design and print QSLs (simple,double,triple...), calendars, awards, directories... High quality at lower price

SkedWizard Priority listing - "Sked Wizard is an applet designed to help radio enthusiast get more enjoyment from their available operating time, ships with a list of ""radio related"" world band programs"

Ham Club Database - Designed to keep track of your club's roster

Mac Antenna Master - Dipole, Yagi, Vertical, Cubic quad, Log periodic, J-pole, coil, and transmission line design package for the Macintosh

MacDSP - Digital filter for Macintosh computers with a PowerPC processor

TK8500 - open source software designed to control and program the ICOM IC-R8500 receiver

TK545 - Open source software designed to control and program the Japan Radio Co. NRD-545 receiver.

TK500 - Open source software designed for the Yaesu VR-500 receiver.

TK120 - open source software designed for the Yaesu VR-120 receiver.

TK75 - Open source software designed to control and program the ICOM IC-R75 receiver

CommCat - CommCat goes beyond rig control and logging to provide many new features designed to help you work and confirm DX, and learn in the process. Free Demo download. Requires Windows 95 or later.

HAMIC - The Ham Intelligent Calculator - HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.

Electronic symbols - Analog digital symbols, identification of components, units and conversi„n tables for electronics circuits design