phase shift noise cancel

160 meter low noise antennas experiments - VE7CA experiments on 160 meters band antennas, looking for better performances on reception.

Phased 40M Wire Verticals - Experiments with phased wire vertical antennas on 40 meters at VA7ST

Phased Array Discussions - Interesting discussion about phased array antennas

A 2 Meter phased array antenna - Phased array Ground Planes antennas for 144 Mhz

RFI From Computer Equipment - Recordings of RF noise from personal computers, peripherals and related equipment. If you can match noise at your location to one of these files then you can be confident that you know where your noise is coming from.

Timewave - Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232

PhaseFree, Inc. Surge Suppression - PhaseFree, Inc. Surge Suppression. Provide customers with the safest and highest quality surge suppression on the market. Providing surge suppression for the Navy's MARS stations protecting their investment.

FMI - FMI provides superior solutions in the design and manufacture of frequency control devices including Voltage Controlled Temperature Compensated Crystal Oscillators (VCTCXO), voltage controlled crystal oscillator (VCXO), Temperature Compensated Crystal Oscillators (TCXO), crystal clock oscillators, high temperature oscillators, surface mount and crystal oscillator products, phase locked sources and more.

Mobile RFI Noise identification - How identify and attenuate RF noise in mobile operations

P3-D Spacecraft: Overview - Overview of the Phase 3-D satellite project

FT-1000 Noise Blanker Mod - Technical resource and information on improving ft1000 receiver performance

The KA7OEI FT-817 pages - FT-817 Radio Modifications, Improving the FT-817 Noise Blanker, increasing output power, using rechargeable cells, epanding frequency range

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.

Double Tone IQ-Generator - Easy to use double tone IQ-generator for testing direct conversion SSB-transmitters based on phasemethod etc.

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

Tower down conductors prove relatively ineffective. - Exploring the need for tower down conductors

Corrosion protection for tower structures. - Galvanic action. Corrosive effects of soil conductivity.

Magnets dissipate RF noise - How magnets can help on reducing RFI

Noise tutorials - Noise foundamentals. Radio frequency interference noise.

Radio Noise - Radio Interferences, QRN, or noise, information by W8JI

Noise measurements and reduction - K1SIX- Noise Measurement and Reduction Techniques

The RF Noise Identification Website - VE3HLS Audio files to help identify rf noise (rfi). Identify the RFI that interferes with your reception

RF Noise Supression - CB Radio RF Noise Suppression

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

Computer monitor noise on HF - RFI Forum at eHam.net