spectrum

CSMA - CT Spectrum Management Association

TASMA - Twin-Band Area Spectrum Management Association

NESMC - New England Spectrum Management Council

Aaronia AG - Spectrum Analyzers - Handheld RF Spectrum Analyzer, EMC & Pre-Compliance Antennas, USB Analysers, Near Field Probes, EMF Shieldings

Tektronix - Spectrum Analyzers - Delivering confidence to confront the most challenging microwave and RF designs. Spectrum Analyzers by Tektronix

Agilent - Spectrum analyzers - Agilent maker of Oscilloscopes, Analyzers, Meters - Spectrum Analyzer (Signal Analyzer)

A long wave receiving system - A long wave receiving system using FFT software Spectrum Lab

A PC as VLF receiver - Using a PC with soundcard as a VLF receiver, how to use your PC as a receiver for narrow-band signals in the VLF radio spectrum by DL4YHF

Receive VLF natural radio with Spectrum Lab - Using Spectrum Lab for the reception of VLF natural radio

Audio Kit for iPhone - Audio Kit is a collection of four iphone applications which are essential for those working in audio and sound. A real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a sine wave Signal Generator.

Multimode - A new app for Ham Radio running on IPhone and IPod touch. Multimode is a modem for RTTY BPsk31 & QPsk31, with spectrum analyzer and Macros for easy operations.

MorseDec - MorseDec decodes and encodes Morse with a range of 5 to 50 wpm. It includes: auto-tracking for wpm speed, macros, spectrum analyzer. Easy to use but powerful.

Identifying sources of radio frequency interference - This page describes the results of some tests with a portable spectrum analyzer in attempt to identify the sources of RFI around the house. Radio interference was found in a number of unexpected places.

Ofcom PLT - Ofcom and Power Line Telecommunications (PLT)

How to use HamAlyzer - How to use software Spectrum Analyzers like HamAlyzer by W3OZ

A Guide to Spectrum Analyzers - What you really need to know about spectrum analyzers

Spectrum Analyzer Tutorial and Basics - A summary or tutorial about the basics of the spectrum analyzer, what it is and what it is used for.

Digital HF Antenna Analyser Project - This antenna analyzer measures complex impedance over the 1.6 - 33 MHz HF spectrum by ZL2PD

Analog HF Antenna Analyser - A simple antenna analyser for the HF spectrum with a built-in signal generator with 3-digit LED frequency display.