rf amplifier design

Optimised Six-Metre Yagi - Design for a 5 element beam on a 23 foot boom with an unusual combination of performance characteristics

80 meters wire antenna  ^pop - A reduced-size 80-meter antenna designed for small lots, portable use, and a fine companion for QRP

Geloso Schematics - RTX and amplifier Geloso schematics

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

HEX-BEAM - Traffie Technology - Hex-Beam antennas manufacturer, a new approach to beam design, using hexagonal array style, by Traffie Technology

scanningmetrorichmond.info - This site is supplied as a reference for those interested in monitoring radio communications in the Richmond,Chesterfield,Henrico areas.

BA-Electronics - Electronic components dealer stocking RF adapters and many other popular items.

MPE Calculator - Free RF exposure evaluation software for amateur radio

4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.

Beacon-Prediction Wizard Priority listing - Specialized interface for the communications-analysis-prediction engine provided by VOACAP, predicts the expected performance of high frequency, HF, radio systems

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"

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

Ham Radio Deluxe Logbook - HRD Logbook v5 is a freeware windows logbook program that offer full control of your radio, Rotor control, support for many db engines, multiple logbook, dx cluster client interface, band maps and solar status report and audio recording

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.

EchoStation - EchoStation is a commercial windows repeater-control program for Windows which makes it easy to set up a complete, fully-functional repeater or announcement machine using a personal computer. Demo version available

eQSO - Dedicated ham radio internet gateway and server system. It is intended for use by RF gateways and PC users connected to the internet

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.

50 MHz GS35B 1500 Watt Amplifier - 50 MHz 1500 Watt Russian GS35B amplifier. Well documented. Complete construction details,pictures,schematics, and more.

Rtty interface (FSK/AFSK) with sound cards - "How to remove the so called ""ground loop"" and the reentry in the RTTY broadcast and make radio and PC happily coexist"

CAT Interface for Yaesu - schematic diagram for CAT interface for yaesu HF Transceivers