rf toroid

Antenna Gain on Trial - Most people think it's a good thing to have and the more the better. However, this is not always true - and the amount of gain is often not what it appears to be. Assuming higher gain is what you need, how do you determine what will give the best performance?

CommsAudit - Commsaudit uk, i/q quadrature , hf receivers, rf, multicoupler, multicouplers, switch matrix, antenna matrices, masthead amplifier,, vhf receiver, uhf,

LNA Technology - LNA Technology High Performance Low Noise Preamplifiers for Amateur Radio, VHF-UHF weak signal, DX, EME, and commercial applications.

Trompeter Electronics - Welcome to trompeter electronics rf connector cable assembly

Harbour Industries - Harbour Industries, the worldwide High Temperature and High Performance cable manufacturer, offers a wide range of Mil-Spec and Commercial designs such as NEMA HP3/HP4 and SAE AS22759

Radio Frequency Systems - RFS is a global designer and manufacturer of cable and antenna systems plus active and passive RF conditioning modules, providing total-package solutions for wireless infrastructure.

Kings Electronics - Manufacture a wide array of RF interconnect products for operation from 0 to 18 GHz, ranging in size from subminiature connectors to large, high voltage types

QTH locator with GoogleMaps  ^pop - Laurent Haas F6FVY a nice QTH Grid Locator point and click interface using Google Maps.

APRSQuery - APRS interface to the FINDU and APRSWorld databases

javAPRS Findu - Findu lookup interface, by station, position and prefix, Wap interface is availbale

WM2U's PSK31 Page - An interesting article on PSK31, includes informations on interfacing to sound cards, troubleshouting, list of psk31 softwares and some historic backgrounds.

Sound Card Packet Interface - Setting up and testing a sound card packet radio interface by KD5ZUG

TS-850S Amplifier Interface - An interface for amplifier to TS-850S

jLog - jLog is a modern Freeware Ham Log program that can run on all major platforms, e.g. Mac OS X, Mac OS, Linux/Unix, Windows, etc. It offers a nice, clean interface and allows efficient entry of QSOs. Import or Export of data using the standardized ADIF 2 format is possible to easily exchange data with any other decent Log program. Built-in CW Keyer, CAT control for many popular, rigs, DX Cluster tracking, call lookups

ILGdb - Free program that interfaces most ICOM radios with the ILG radio frequencies database and lets you click a station in the database to tune your radio to the station, or scan the list looking for stations that are on the air.

FREQ DB Icom - Program that interfaces with a text file of frequencies plus other data and tunes your ICOM radio. You create this data yourself, and can use almost any data you wish. You use the program by clicking a station in the file to tune your radio to the station or net, or scan the list looking for nets that are on the air.

DL9VF Exam Trainer - Franks US license exam trainer, a PC program to prepare yourself for the written test (element 2,3 and 4) of the amateur radio exam performed by the FCC/VEC

Ham Radio Control Libraries - Hamlib is a library aid for software developers wishing to incorporate control of amateur radio hardware into their programs. Hamlib will allow ham radio software authors to concentrate on the user interface and the basic function of the program rather than radio control.

Easy Kilowatt Linear Amplifier  ^pop - Rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details

The MGM Interface - General purpose RTX-PC sound card Interface for MGM (Machine Generated Modulation)

CAT & audio interface - Schematics and plans to build a custom CAT and audio pc interface

Radio Interfacing - Serial cable connections tables, CW key and PTT interfacing, Using USB Ports or parallel ports

SoundCard Packet TNC PC to Radio Interface - Computer sound card packet tnc to radio interface. david stansbury kb3kai home-brew version of this soundcard to rig adapter

Some Tips on Sound Card Interfacing to Your Rig - Article on PC to radio interfacing by Paul Umbdenstock, WA1VOA

Interfacing to PC soundcards - General electronic topics on interfacing to PC soundcards by epanorama.net