system analyzer

40 meter 4-square antenna - A permanent working 40 meter system based on a 4-square antenna

A Horizontal loop for 80 meter dx - This 80-meter quad loop system requires only supports of modest height—a better single-element antenna may be hard to find by VE2CV

Feeding an End-Fed Antenna  ^pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.

Radial System Design - Are the lengths of antenna radials related to the height of a vertical? By N6LF

FM Transmitting Antenna - The antenna system about to be described here is a superset of the classic "J-Pole" design, a 4-bay J-Pole antenna

Four square phased verticals - TK5EDP 4 square phased vertical system in corse isl.

Selecting a WiFi antenna - What is the best WiFi antenna for me? Looking for a range extender antenna for your WiFi system. This article will help in choosing the correct antenna for your system

SCRAMS - The Southeastern Connecticut Radio Amateur Mobile System

NI4CE West Central Florida Group, Inc - Founded in 2001 to manage and operate West Central Florida's only regional linked amateur radio repeater system. Currently, the NI4CE Repeater System operates nine repeaters from five sites with more on the way. NI4CE covers all or parts of twelve counties in West Central Florida and provides mobile coverage along the areas I-75 and the I-4 corridors.

Shore Points Amateur Radio Club - Our Club Repeater System serves the Atlantic City Area on three Amatuer Bands

WB8LLY The Firelands Amateur Repeater Association - An association of amateur radio operators and their families in North Central Ohio, that is dedicated to the operation and maintenance of a repeater system that serves North Central Ohio.

Unified Microsystems - W9XT contest card DVK Digital Voice Keyer, morse keyers CW memory keyer, beacon CQ IDer, USB interfaces and more for ham radio operators

BridgeCom - FM Repeaters & LTR Controller Combined manufacturer Dedicated to providing you affordable, reliable and feature-rich communications equipment that Goes the Distance.

Trilithic - Broadband instruments, R and microwave components and filters, field analyzers, spectrum analyzers

PlentiPeppa.com APRS Web server and live streaming web cams - All about my hobbies, Ham Radio, Automatic Packet Reporting System and my live streaming web cams and much more!

Is HF propagation reciprocal - Some test circuits using the ACE-HF System Simulation & Visualization software, about reciprocal propagation on HF bands by NW7US

Phase Noise. - This is perhaps the most important parameter in many oscillators and it deserves an in-depth discussion on what it is, how it affects a system and how it can be minimised in an oscillator design.

ViPEC Network Analyzer - This program intended for electronic circuit analysis (mainly for Linux). ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks.

Ipox5 radio link system - Ipox5 is the freeware version of a commercial radio linking system, designed for amateur, nhw, emergency communications etc. It is optimised for mobile broadband and difficult IP links. It allows PC access, and up to 100 users on your link at one time. Usefull for multiple PMR446 use on very large sites. Works under Windows 98, XP, Vista, and Linux (under Wine)

Cleverscope - The PC USB mixed signal oscilloscope - Cleverscope PC based oscilloscopes, spectrum analyzers and signal generators

QSL Maker  ^pop Priority listing - Freeware Windows QSL card printer software. This tool will let you create you own QSL cards importing pictures and customizing colors and other cards aspects. Print directly to your ink-ject or laser printer. Runs on windows systems by wb8rcr

FreeSCAN - Freeware windows program for programming the Uniden SC230, BC246T, BC330T, BCD396, BC15T and BCD996T scanners. FreeSCAN allows to download and uploading programming, remote control the scanner, log hits, and supports printing out of systems and groups.

SvxLink - Echo Link client for Linux and general purpose voice services system for ham radio use. The svxlink server consists of a core that handles the connection to the tranceiver. The core can be configured to act as a repeater controller or to operate on a simplex channel

The Ufer ground system - A new look at the Ufer ground system by Chris Scott

The simple man's Spectrum Analyser - An easy to build spectrum analyzer