signal analysis

EWE Antenna Info - Posting in the AM list of the National Radio Club, concerning an antenna called a "EWE" used for listening to distant radio signal reception.

Digital Modes Samples - Audio recording of many ham radio digital modes emissions. Sound samples of HF VHF digital signals samples and published by KB9UKD

1296 by KB2AH - Specialized 1296 Mhz Equipment, Circular Feeds, LNA, power amplifiers, Antenna systems, Test equipments, antenna mounting blocks

Starman Electric - Starman Electric manufactures DataBridge wireless RF modem modules for easy point-to-point wireless data transmission of analog, digital, and serial RS232 UART signals.

Hittite Microwave Corporation - Amplifiers, filters, attenuators, mixers, PLL, switches and frequency dividers, signal generators, power detectors, transimpedance amplifiers, variable gain amplifiers and more

RSQ Signal Rporting for Digital Modes - This site is devoted to promoting RSQ as an improved signal reporting system for narrow band digital modes and to demonstrating its application to the popular PSK31 mode.

VK2SIX - Six meters web site - Nev vk2six's 6m low signal dxcc and cw home on the web.

CMSK - CMSK is a narrow-band weak signal digital mode for LF and MF ham radio bands defined by ZL2AFP. CMSK63 is the windows client program.

Meteor scatter or meteor burst communications - A summary, overview or tutorial covering the basics of Meteor Scatter or Meteor Burst Communications, a form of radio signal propagation often used at VHF.

Making the Most of your PSK31 Signal - Adjusting audio output of your soundcard to obtain a perfect PSK signal from your transmission. A project to help you tuning your PSK31 emission.

PSK31 Elmer page and PSK Signal Quality - Generating clean PSK signals and helping others to correctly tune their souncard output, as well as giving proper RSQ reports by identifying signal quality by N1NKM.

Propagation and the Atmosphere - overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.

How to Measure Receiver Sensitivity - Testing an Elecraft K2 sensivity using a signal generator, headphones and an AC Voltmeter

Raspy signals on the TS-870 - Troubleshooting the raspy signals on the TS-870S

Signals - Trio Datacom, Dolectek and Yaesu Vertex Standard cb and ham radio dealer in new zealand

International SWL Registry - Obtain a unique SWL Designator to use on your signal reports and QSL cards. Official certificates also issued.

Digital Oscilloscope and analyzer software - PC based mixed signal digital oscilloscope and analyzer software for BitScope. Runs on Windows, Linux or Mac OSX systems.

Multi-Instrument - Contains a PC sound card based signal generator. It can generate functions, multitones, arbitrary waveforms, burst tones, MLS, DTMF, musical scales, white noise and pink noise, and frequency/amplitude sweep. Fully functional free trial downloadable.

HERALD P2P radio link design - Sw tool to design point-to-point multi-hop microwave links and networks, 400MHz to 58 GHz. Site/Hop Configuration; Customized Antenna & Radio Equipment Libraries; Link Budget; Path Profile Analysis ,clearance, reflections; import path profiles from SRTM maps, free download.

Spectrogram for iPhone - Spectrogram for iPhone displays a live, scrolling display of sound frequency components derived from a 1024 FFT analysis.

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.

A Two Meter Duplexer - How to get a cheap-squeaky clean signal, a 2 meter duplexer designed by Leonard WB3AYW

Signal Source for AO40 mode S - Signal source circuit for 2.4 GHz by sv1bsx

WSVU_SDR – New SDR for the VHF/UHF - Brand new SDR transceiver with the working title Weak Signal VHF and UHF SDR - WSVU_SDR by G0RUZ and CT1DMK

USB Warbler - This project describes how one USB port can provide all of the signals necessary to operate a transceiver in digital mode from a Windows XP laptop by KG4JJH