short wave listening

160 Meter short TX loop antenna - Here is a successful 160 Meter short TX loop antenna 4 feet high, 3 feet wide, and 6 inches deep.

Transmission Line Calculator - This web page allows you to perform transmission line calculations by using an applet instead of a Smith chart

Antenna Loading Coil Construction Techniques - This page explains how to construct high-Q inductor coils.

The Simple Collinear - Wherever there is a need for a vertically polarized omni-directional antenna with gain, a collinear is used. The vertically polarized collinear takes the form of two or more half waves in-line and in-phase, resulting in an omni-directional pattern with maximum radiation near the horizon.

6dbi Colinear Antenna for Wireless LAN  ^pop - This is an short description on how to make a cheap omni antenna for 802.11 wireless LAN cards.

VSWR Explained - An interesting article on Voltage Standing Wave Ratio vs Current Standing Wave Ratio by EPARA

Loop Antenna News and Information Forum - This is the Loop Antenna Group to Ask Your Questions, Get Answers and Information about Loop Antennas for improved your Radio Listening and Enjoyment.

Hula Hoop Loop antenna - The concept of the "Hula Loop" came after many years of building medium wave loops of varying size, shape and performance. Usually these loops are constructed on a square wooden frame, with wire being wrapped around the periphery

6-Band Windom antenna  ^pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio (ham) bands

Wire receiving loop antenna - A quick and easy to build loop antenna for shortwave listeining can tune from 5 to 18 Mhz

Quarter Wave Verticals - One of the most useful antennas in the repertoire is the Marconi or quarter wave grounded vertical antenna. Its invention made it possible to halve the length of antennas, simplifying communications, especially at HF and below.

Wire Antenna - This page describes a cheap, weather-resistant and readily available type of antenna wire by HAMwaves.com

WD2XGJ Experimental Station - Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren, Ham Call K2ORS, Frequency: 137.7796 KHz

RemoteHams.com - RemoteHams permit to display and/or control your rig on a webpage providing a web interface to radios supported by Ham Radio Deluxe & Shortwave Log!

Slow CW an introduction for Newcomers - DK8KW Longwave Information

Troubleshooting Traps - This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.

Shortwave Central - Here you will find broadcast, pirate, and clandestine information including loggings, QSLs tips, and last-minute news.

The SWDXer - SWDXer is the one stop resource for shortwave radio information. Articles include antennas and simple electronics construction.

shortWWWave - News, frequency guides and programme information, on shortwave and other international media.

3 EL Quad Designer - This DOS program will figure the wire sizes for a 3 element quad and will also give you the distance from the center of the boom to drill your holes for mounting the wire on the spider. it also gives you the length of the 4 quarter wave lengths of wire in case you would like to figure the spreader drill points yourself.

Quarter wave vertical Designer - Want to build a Quarter Wave Vertical, this DOS program shows you how.

ILG Rig Control - International listening guide (ILG) ILG Short Wave Radio Control Program

Sine Wave Generator - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers

Accurate Inductance Calculator - This page allows you to calculate in the most accurate way high-Q inductor coils.

Atlas of Ground Conductivity - The ITU-R World Atlas of Ground Conductivity in PDF