free spectrum analyzer

Agilent - The premier measurement company advancing electronics, communications, make signal generators,oscilloscopes, meters, multimeters, voltmeters, power analyzers

TekNet Electronics - Frequency conunters, multimeters, oscilloscopes, spectrum analyzers, power supply and RF network analyzers.

EQS Systems - Test and measurement instrumentation, AC & DC power supplies, power sources and analyzers, data acquisition systems and boards

Hameg Instruments - Spectrum Analyzer, Oscilloscopes, EMI Measurement and Power Supplies German test equipment maker

LeCroy - Digtal oscilloscopes and protocol analyzers, probes and other test equipment

Link Instruments - Pc based test and measurement equipment and instrumentation: digital oscilloscope, logic analyzer and spectrum analyzer.

USBee - PC and USB Oscilloscope, Logic Analyzer, Signal Generator and Protocol Decoder and Analyzer

BK Precision - Power supplies, electrical testers, battery analyzers, cable tester, rf generators, spectrum analyzers, Digital/Analog Oscilloscopes, Multimeters , attenuators, frequency counter

Yaesu VX-2R Quick Reference Card - A downloadable free quick reference card for the Yaesu VX-2R in powerpoint and PDF file ready to be printed.

Lehman scientific - New unused surplus and used electronic test and laboratory equipment including spectrum analyzers, signal generators and oscilloscope

Scientific Surplus - Buy, sell and trade electronic and scientific instruments. Oscilloscopes, microscopes, signal generators, RF equipment, short & long wave radios, meters and wattmeters, detectors (radiation, metal), spectrum & network analysers military equipment

Naptech - Naptech buys and sells quality test equipment from hp, tektronix, including spectrum analyzers & peripherals, oscilloscope, frequency counters timers, signal generators, multimeters & voltmeters, RF & power meters, microwave amplifiers

AADE Filter32 - ADE Filter Design and analysis is a free for download windows program to design filters

DXFile - Windows shareware logging program, offer several features like packet radio interface, web cluster, grid square, beaming directions, qsl manager lookup, dx spot filtering by F6GQK in french.

Log DXpedition - Freeware windows software log book management dedicated to dxpedition operations by IK6CAC

DXSat - Windows satellite tracking program by F6GQK

Noise Figure Meter with a Spectrum Analyser - A relatively simple automatic Noise Figure (NF) meter was developed which is using a spectrum analyser as the receiver and logarithmic power detector.

Science Workshop - Home of the Poor Man's Spectrum Analyzer

A spectrum analyzer for the radio amateur - Good tools are priceless when you need them. Here’s a piece of test equipment you’ve always wanted for your workbench

A Spectrum Analyzer for the Radio Amateur—Part 2

W7ZOI / K7TAU Spectrum Analyzer - W7ZOI/K7TAU Spectrum Analyzer Constructed by N8QOH

W7ZOISA Spectrum Analyzer - My Version of Wes Hayward W7ZOI / Terry White K7TAU Spectrum Analyzer

Microwave spectrum analyzer - A practical approach to microwave signal analysis for the home experimenter

Harmonic Converter for Spectrum Analyzers - Extending the frequency coverage of spectrum analyzers, Harmonic mixer by Matjaz Vidmar, S53MV

Spectrum Analyzer building Project. - W6/PA0ZN CATV tuner based Spectrum Analyzer Building Project