altai signal generators

Beacon Signals.com Priority listing - Covering all areas of beacon signals including radio beacons and beacon technology. Access free beacon recordings and graphs using Spectrum Lab, SpectraVue, and CW Skimmer.

Northern Lights Radio Society - Organization of Upper Midwest amateur radio operators who are active in weak signal (SSB/CW) work on the VHF, UHF, and Microwave bands

SWOT Radio Club - 2-Meter Weak-Signal Enthusiasts

WebSDR on 70cm band - 70cm and 23 cmd EME signals recorded using the 25 m dish in Dwingeloo by WebSDR Radio

NorComm Data Signaling - Sequential Decoders, DTMF, voice encryption, notch filters and band pass filters, single tone burst decoders.

Will Same - Manufacturer and exporter who have engaged in RF field , CATV , Telecom products field in Taiwan since 1990. Lightning Surge Protectors and arrestor, signal splitters, distribution amplifiers

Listing of Q Signals - Miscellaneous abbreviations and signals to be used in radiotelegraphy communications except in the maritime mobile service

Analyzing UHF signals using FFT programs - With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.

JT6M.org - The purpose of this web site is to promote JT6M as a mode of communication on both 6M and 4M band and guide users through setting up and using JT6M effectively. Optimised for 6 metre band Meteor Scatter, JT6M allows you to make meteor scatter contacts easily. JT6M is part of the WSJT suite of digital weak signal software applications developed by Joe Taylor, K1JT

SDR-1000 and Weak Signal - Optimizing the SDR-1000 for Weak Signal Operations on Two Meters

MFSK16 - An MFSKMulti-Frequency Shift keying DX Mode. A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.

Operating VHF/UHF Weak Signal - Weak Signal VHF/UHF Operating by James S. Kaplan KG7FU

ARRL JT44 operating mode - JT44: New Digital Mode for Weak Signals

Software DSP for Weak Signal Enhancement - An Overview of Software DSP for Weak Signal Enhancement by Roger Rehr W3SZ at Elecraft Tech Notes

Long delayed echoes in EME - The following discussion about the long delayed echoes (LDE's) on the EME signals

Magnetospheric ducting as LDE cause - LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz

Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

Ten-Tec Orion 9 MHz IF Output - This article describe hot extract a wideband 9 MHz IF sample signal from a Ten-Tec Orion model 565 by VE7TK

MiniDSP - MiniDSP is a platform for digital audio signal processing applications. Manufacture low cost digital signal processor kits for the DIY/OEM market. Our flexible audio platforms are software controlled and easily upgradeable.

Signals Analyzer - Signals Analyzer – it is the program, which is designed for the very qualitative analysis of different signals. The main area of SA application is the analysis of unknown or unclear, strange signals.

VOAProp - VOAProp shows you typical propagation for a given hour of the day during a given month. The propagation is shown as expected signal strengths to be received from different parts of the world, plotted on a world map. Windows freeware by G4ILO

WOLF GUI - GUI for the KK7KA Wolf software, that was originally written as command line interface only. Wolf is a weak signal software

Alternate Power Sources - Article about alternate power sources, like portable generators, solar panels, batteries and wind turbines

Using Band-Pass Filters - Clean Up Your Signals with Band-Pass Filters

A Simple Dual Band SSB Transceiver - Homebrew a dual-band transceiver with a crisp receiver and a clean SSB signal