short wave

Half-Square antennas - This doubet antenna is a half wave dipole antenna easy to build, in french

Shortened dipole for 10 & 40m bands - A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.

DF9CY 11 Element for 432 MHz - A short good performing antenna for 70cm

80 Meter Pizza Pan Antenna - This is a resonant, half-wave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL

RF Balun Transformers - This application note is designed to help the reader understand how balun transformers can be used in today’s RF/Microwave communication applications.

HF Magnetic loop antenna - VK3YE magnetic loop antenna plan that cover 7 Mhz to 20 Mhz and shortening loop can work on 21 Mhz.

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

Making the W3DZZ Video - A video guide of how to make a high performance,low cost HF multiband antenna for the radio amateur and shortwave enthusiast. Fantastic performance and low cost. Video made by Mike (M0RRQ)

ARRL 10 meter contest Log - A sharewave windows logging program for the ARRL 10 meter contest by N3FJP

OH3SHF Microwave Beacons - OH3TR operates the OH3SHF microwave beacons on 2.3, 3.4, 5.7, 10 and 24 GHz

I8EMG-B - I8EMG is running several beacons from 10 meters to microwaves

ZS1J/B - 28.2025 MHz. 5 Watts output to a half wave, end fed, vertical antenna.

VA3GRR - Radio Beacon - VA3GRR is a radio beacon, operating on the 10 meter amateur band. Its frequency is 28.205.5 MHz. It runs just under 5 watts of power into a vertical half-wave ringo style antenna

W5RTX Beacon - 10 Meter Beacon on 28.259 mhz. 15 W into 1/2 wave vertical.

WebSDR on 20m, 40m and 80m  ^pop - On this page you can listen to and control a short-wave receiver located at the amateur radio club ETGD at the University of Twente. In contrast to other web-controlled receivers, this receiver can be tuned by multiple users simultaneously, thanks to the use of Software-Defined Radio

April Instrument - April instrument, manufacturer of programmable microwave signal generators

TRAK Microwave Corporation - Signal generatos, oscillators, direct and indirect synthesizers, exciters custom oscillators

Operating NVIS - Near Vertical Incidence Sky Wave (NVIS) Propagation, PPT presentation by Marc C. Tarplee, Ph.D. N4UFP

The Ground Wave - About ground wave, article by moonraker.com.aut

What is NVIS - differences from groundwave propagation

Near Vertical Incidence Skywave - NVIS definition at Wikipedia

OH2FFY Ham radio and shortwave listening - QRP Homebrew Ham Operator and constructor in Finland. Also works on the CB2HAM radio conversions and is into shortwave listening

KB0EPY Shortwave Log - Personal SWL log with various information from SWL tips and tricks to Frequecy Logs to general SWL information.

SigJenny - SigJenny turns your PC into a flexible and powerful audio signal generator for free. It can create multiple waveforms, sweep, fire single or repeating tone bursts. You can save your sound as a wav file, display a frequency response, use SigJenny a bit like an oscilloscope, and do a very good impression of a police car!

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