phase shift noise cancel

2 Stack Match Yagi Antenna - Solves antenna matching problem with two phased antennas. Stacked rotary beams are popular. However, connecting two 50 Ohm antennas together presents some problems.

8el 144MHz Super Low Noise OWA Yagi Priority listing - This is a super stable 50OHm direct feed Yagi for 2m using 1/2 inch tube and a real easy build.

14elem. 144MHz OWA EME Yagi - Simply a superb 50Ohm 2m Yagi with excellent bandwidth and most important, low noise.

14 el 70 MHz Low Noise LFA Yagi - This is a true monster Yagi for the 4m band which has a 50Ohm feedpoint with wide band performance yet the gain and F/B of a low impedance Yagi.

20 elements 432MHz LFA Yagi Priority listing - A0 element super low-noise simple to build Yagi for 70cms. Uses 1/4 inch and 12 inch tube/rod

26 elelements 432MHz LFA Yagi - 26 elements 70cms Yagi for EME ultra low noise excellent G/T figure. Easy self build

Superphaser-2 Phasing Unit - The Superphaser-2 is an antenna phasing unit based on the PSA-A Phase Shift Amplifier module

G3WZT Phased Verticals - Vertical phased antenna systems plans by G3WZT

Phased Array Adjustment - KM5KG article presents a lumped-parameter tee-network model of the coupling between radiating elements in a phased array in order to provide a physical and intuitive understanding of phased array operation and adjustment interactions

Antenna Engineering - Antenna Engineering specialise in producing a range of high quality aluminium HF verticals ranging from mono band single element verticals to multi element phased arrays.

Anaren - Manufacturer for splitter and combiners, baluns, directional couplers hybrid couplers, modulators, mixers, phase discriminators, antenna feeds.

Filter Concepts - Custom EMI Filters, AC DC Three phase filters by Filter Concepts Inc.

Introduction to Digital Modes - Wireless Society of Southern Maine, Digital Modes Page, introduction to amateur radio digital modes, including FLDIGI, PSK31, RTTY, high speed CW, Slow Scan Television, HF Weather Fax, WeFAX, MFSK16, OLIVIA, G-TOR, AMTOR, MT63, Digital SSTV, Frequency Key Shifting, and more

RF Noise Powerstroke Diesel - Reducing and removing RFI Noise

Audio CW Filter - A very effective AF Adaptor, with built-in noise blanker and 30 Hz CW filter modules by PA0LQ

Kenwood TS-850 Noise Blanker Mod - Reduces line noise on TS-850

Spikes CB Radios - A full service sales & repair shop, sell a wide range of cb radios, scanners, antennas, mounts, echo, noise toys and a wide range of accessories. Atkinson, IL USA

NFM - noise figure measurement - NFM (for Noise Figure Meter) is a software application to assist Noise Figure measurement. NFM implements the method of Agilent application notes AN 57-1 and AN 57-2 for noise figure measurement, but with the addition of an adjustable attenuator after the noise source and between the DUT and instrument.

IDSP - IDSP is an app for IPHONE and IPOD Touch. Made by 2 powerful filters, a band pass and a band stop with adjustable bandwidth. Filters are butterworth 4 and 8 poles, sample rate at 44,100 32 bit. Cancel every noise and hear only your qso.

Cute CW - Most morse code (CW) training requires you to learn everything at once without a training process. This application changes that and separates training into phases.

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.

Friis-It NF for iPhone - Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system

Bose Headphone Mod - Adding a boom mike to Bose Quiet Comfort (QC-1) noise-cancelling headphones

UHF Low Noise Antenna pre-amp - Low Noise Antenna pre-amp for SAT, EME & DX-ing

Improving Receiver Noise on 50 MHz - Tests on a preamplifier for 50 MHz installed right at the feedpoint of the antenna.