w2ihy noise gate constru

Rotary dipole for 12/17 meters - A home brewed rotary dipole antenna for 12 and 17 meters band with pictures and construction details

80/160 Dual band vertical - This 80/160 meter antenna is constructed from six 12 foot aluminum tubes to form a slip-up mast antenna some 60 feet high by K0RWU

Coax Square antenna - N0KHQ Moxon rectangle for 17 meters, constructed from RG-58 coaxial cable

An effective 3 band Wire DX aerial - A 3 band dipole for 10 15 and 20 meters band by Mel G4WYW

VK2ABQ Mini-Beam - A compact beam antenna that can be built At home, construction details for the 20M (14Mhz) version

An active antenna - Project for QRP operations by George Dobbs G3RJV

Balun Construction - Construction and use of broadband transformers

Building EH antennas by F5IXU - Notes on building efficient EH antennas in French

2 meters copper J-Pole - Plan and list of material needed for construction of a j-pole antenna for 144 mhz

VLF-LF and the Loop Aerial - The article discusses the theory of loop aerials for receiving and how they reduce the level of local noise by Lloyd Butler VK5BR

CobWeb antenna construction - A 5 band omni directional antenna original design by g3tpw. Works on 10,12,15,17,20,2,6 m & 70cms.

HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you by Mel G4WYW

Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.

Ham Radio Tower at NØHR - Ham Radio Tower Project at N0HR. Includes site plan, escavation, tower construction, HF antennas, grounding and lightning protection, coax and more.

Gunnar Olsen Study : Towers Collapsing - This study is of guyed tower failures and collapses to investigate what a typical tower fall radius would be.

Amateur Radio Online - Ham Radio Auction Gateway - Ham radio ebay auctions, amazon affiliate bookstore and more

Ham Radio Talk - The amateur radio forum with more signal and less noise.

dstar_digital : D-Star * Digital - An International discussion group for D-STAR Digital Amateur Radio. Radios, Repeaters, Gateways, Internet, Setup, Mobile and Portable radios, Cloning Software, icf files,

E-Z Tube aluminum - E-Z Tube aluminum tube is a versatile, light duty construction system that offers a cost effective and simple method of constructing aluminum tube frames.

West NewYork Scanner Guide - The western new york amateur radio and scanner guide by the lancaster amateur radio club in PDF file

How to make an APRS IGATE - How to make an APRS IGATE using Linux, soundmodem and aprx by HA2NON

Rhode Island Amateur FM repeater service Priority listing - This website explains coverage and construction for our repeaters. Includes useful links and an insight into the Ham community in Rhode Island

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

RSCW - RSCW is a Linux/Unix program for decoding morse signals using the computer's sound card. It has been written/optimized for digging weak signals out of the noise.

Noise Figure Meter with a Spectrum Analyser - A relatively simple automatic Noise Figure (NF) meter was developed which is using a spectrum analyser as the receiver and logarithmic power detector.