w2ihy noise gate constru

Build a 4:1 Guanella Balun - Step-By-Step Construction of a 4:1 Current-Type Guanella Balun by W1CG

PY8ELO Dipole project - A spanish page about inverted V dipole construction tips and calculations.

This Old Dipole - An antenna construction workshop conducted at Marshall N1FN's QTH

Common mode chokes - Excellent article on limiting noise using chockes by Chuck Counselman, W1HIS

Mirrored J-Pole - The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.

Small magnetic receiving loops - Article about magnetic loops, construction notes and diagrams

Magnetic loop antennas - Magnetic Loop Antenna, MagLoop, Small Transmitting loop, construction hints, remote control motors

Hombrewing Cubical Quads - Cubical Quad antenna construction notes

K-FACTOR Table & Chart - Determine the K-Factor used as a multiplier when constructing half-wave antennas.

Novel Gamma Match Construction - A novel approach to contruction of a gamma match.

5 element yagi for 20 Meter band - Picture and construction details of a 5 element 20 meter monobander

HNY QSO Party 2007 - The hny qso party is organised by the polish radio amateurs' journal, qtc

LNA Technology - LNA Technology High Performance Low Noise Preamplifiers for Amateur Radio, VHF-UHF weak signal, DX, EME, and commercial applications.

Gateway Electronics - Amateur radio kits, cw keyers, vhf mini receivers, 2 meter preamplifier and more audio related kits, based in St. louis, Mo and San diego, ca USA

The Noise Floor - The noise floor: 1750 meter lowfer and medfer resource

Voice Repeater Basics - Repeater operating is one of the most popular facets of amateur radio

FT-1000D Noise Blanker modification - This modification was developed by W8JI for his FT-1000D.

Faros - Windows shareware, automatic NCDXF beacon monitor for Radio Amateurs, SWL'ers and HF communication engineers. by Alex VE3NEA. It continuously monitors 18 NCDXF beacons on five bands, automatically detects the presence of the beacon signals, even in QRM and noise.

Geosat - MSDOS program to calculate Az-El position of geostationary satellites at specific location and carrier to noise ratio of received SAT TV signal.

Easy Kilowatt Linear Amplifier  ^pop - Rf amplifier for hf ham radio service - includes easy to understand designs and penny-cheap construction details

A simple VOX circuit - Here is a 3 transistors 6 diodes circuit that is a Voice Operated Tx PTT control as well as an ANTI VOX circuit to stop mis-operation from Rx noise by G8MNY

Using ferrite for interference suppression - Excellent guide to using ferrite cores for interference suppression. Understanding and Solving RF Interference and Noise Problems by Jim Brown K9YC Audio Systems Group, Inc. PDF File

Noise Sources - Computers, TV's, and Switching Systems can cause noises to your receiver

BB Tuner construction - Building a balanced-balanced tuner by KK5DR

A Cable Construction Trick - If you have several TNC and radios this trick can be usefull for you