signal analysis

43 Foot Multiband Vertical Installation and Performance - Installation notes, and decision analysis for selecting and erecting a multi band vertical antenna with radials.

DIY Wireless Antennas Update and Resource Center Priority listing - Your DIY Guide to Wireless Antennas for boosting wireless signal strength. How to build a wireless antenna for little or no money.

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

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

Response Microwave, Inc. - Microwave Signal Processing Components and Subsystems, from design to manufacturing.

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

Phonetic Alphabets, Historic, English & Others - Phonetic Alphabet Historic, English and Others. Foreign NATO Morse Telegraph Code Abbreviations Q X Z Procedures CB Police Marine Army Navy Heliograph SINFO SINPFEMO Signals WW1 WW2

The JT65 Communications Protocol - Digital protocol intended for Amateur Radio communication with extremely weak signals. 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

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

Yaesu VR-5000 Review - Strong Signals review of the yaesu VR 5000 general coverage radio receiver

Train's Towers - Maintenance of Antenna Tower Systems, Antenna tower foundation analysis and repair, Tower troubleshooting and repairing

DSPRX - Signalprocessing for SSB - Direct Conversion Receiver using Phasemethod for Sideband Supression, does all necessary signalprocessing for Direct conversion Receivers using IQ-mixer for demodulation.

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.

SimJT - SimJT is a simulation program. It generates audio-frequency JT65 and CW signals in a background of gaussian white noise, with user-specified signal-to-noise ratio.

Signals Analyzer - Signals Analyzer – it is the program, which is designed for the very qualitative analysis of different signals. The one of main fields of SA application is the analysis of unknown or unclear, strange signals. This programm will be very usefull to everyone from professional analysts to amateurs.

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

Receivers sorted by IM3 - Sorted by Intermodulation. Best receiver first. This is a measure of how badly a close-spaced signal will trash your receiving with spurious signals or splatter sounds,

Calculating the Received RF Noise Power - Voacap, high-frequency ionospheric communications analysis and prediction

80m Passive Heterodyne Receiver - Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.