simple 4:1

GW8IZR - A simple 70MHz antenna - A simple way to make a four metre antenna

Inverted V - Described is a simple inverted-V antenna which, when used with a balanced ATU, can be used on all the main Radio Amateur HF bands (80, 40, 20, 15 and 10m). The cental support is made in such a way that the wire can be coiled up for storage when the antenna is taken down.

The simple 144/440 copper pipe J - Projects by Dale Kubichek, N6JSX

ON3JT vertical multiband hf antenna - A simple and low cost multiband vertical hf antenna covering 5 bands (20m-10m) from an old CB antenna

Comparing HF Wire Antennas for NVIS - How to make the most of simple wire antennas. EZNEC help to compare the performance of a wire dipole antenna in various configurations

A great shortwave loop antenna - Apartment dwellers and antenna experimenters might like to try this simple loop antenna by OH2FFY

Antenna tuner for 4m - A simple antenna tuner for 4m by Tony Hawker G4CJZ

High Performance 802.11 Antenna - It is cheap and simple and has a gain of about 17 dBi.

ODXC Web Monitor - Obninsk DX Cluster Web Monitor, telnet and Java based Web access. Offer a simple DX Cluster web interface.

Aerostar Wind Turbines - Wind turbines for home and business simple, rugged, efficient, reliable and quiet

Shell Engineering : E-Z-TY - Ezty rope clamp manufacturer making your rope and anchor line tasks simpler. Custom made products for all your boating needs. ropes lines, rope clamps, dock lines, end tips, sleeves, sliding locks, clamps, hooks, plastic hooks, tie down kits

A D-ATV transmitter project - Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by Jean-François Fourcadier, F4DAY

Digital ATV in simple terms - This article was first published in CQ-TV issue 208. Author try to explain digital television in layman’s terms and without getting too involved in mathematics.

706MKIIG Mobile Mount - This page describes a very simple and inexpensive mobile mount for an ICOM 706MKIIG radio

Receiving weather satellite images - How to receive images from orbiting noaa weather satellites using simple receiving equipment and a computer by G4ILO

Broadcast Books - Directional Antennas Made Simple The "How To" Book by Jack Layton

D-Term - D-Start term, is a simple instant message or keyboard-to-keyboard chat application for DV mode

SimplePTT - This application is used for simply triggering PTT via DTR/RTS COM port pins. It supports remote PTT triggering with ptt2dtr as the server.

VA3TO Programmable Beacon Keyer - This article describes a simple programmable Morse Code Continuous Wave (CW) beacon keyer that can be built for less than $15

What's a diplexer? - It's a network that splits a signal to two or more loads, dependent on frequency. It is the simplest form of a multiplexer, which can split a signal into many different signal bands.

5th order High Pass VHF Filter - Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem

Very simple wattmet - A very simple QRP wattmeter project by SP5DDJ based on schematic of SWR meter developed and published by JA6HIC

Power Supply Design - A home learning tutorial on the basics of designing simple power supplies for radio projects by VK2TIP

2.4GHz Spectrum Analyser - This is a simple project that allows you to monitor the 2.4GHZ band in your immediate vicinity.

Simple Spectrum Analyser - Homebrew a simple spectrum analyzer. Diagrams, part list and instructions by G4AON