5/8 ground plane

Double Extended Zepp Antenna  ^pop - This double extended Zepp provides 3 db gain over a dipole on the band it is designed for. Each side or leg is about 5/8 wavelength long.

50MHz J-Pole Antenna  ^pop - Need a general purpose antenna on the magic band? The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.

J-Pole theory  ^pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.

Double 5 / 8 Flower Pot Antenna - The Double 5/8 is a natural extension of the Single 5/8 and uses a 5/8λ element for both the top and bottom radiators.

6m vertical antenna - G3JVL Six meters ground plane vertical is a compact antenna that is ideal for portable operations on 50 Mhz

75 TSW 134 Rick - Simple and clean web about an Azorean 11m station!

Ham Radio And The WTC Disaster - "W2IK's Personal experience being the first responder at ""ground zero"" during the WTC 9/11 disaster."

Hoosier Hills Hamfest - Hoosier Hills Hamfest 2002October 5th&6th, 2002 Lawrence County 4-H Fairgrounds Bedford Indiana.

Starke, Florida Hamfest - Second Saturday in October at the Bradford County Fairgrounds.

Charlotte County Hamfest - March 15,2003 Charlotte County Fair Ground Port Charlotte Fl.Large Tailgate area,Inside vendors.

PA2MZ Marten - A site of one of the yuongest HAM op. with a HF license

Symek - Packet-Radio-Controller for amateur radio, CB and commercial applications. Data radios (transceivers), receivers and transmitters for high speed data communication Assemblies for satellite ground stations, special receivers and transmitters.

The Very Small Array (VSA) - in Tenerife (Canary Islands). Designed to study fluctuations in the Cosmic Microwave Background (CMB) thought to originate from the period immediately following the big bang. Operated by Cambridge and Manchester Universities (UK).

Global Positioning System Primer - Welcome to the Global Positioning System (GPS) What is GPS? What is Navigation? GPS Elements Satellites in Space Ground Control Stations and Receivers, How GPS Works - An Amazing System, Military Uses for GPS

IRLP Operating Guidelines - Operating procedures for IRLP use

Morse code ringtone generator - This page converts text into a morse code ringtone playable on most mobile phones.

Satellites list - Long and detaliled list of AMSAT and other satellites with pictures, drawings and satellite informations

Troposcatter Meteorscatter Ionoscatter - Troposcatter, 50 MHz meteor scatter, ground gain for eme, radiation angle, by OZ1RH

Dominion Radio Astrophysical Observatory - operates the seven-antenna Synthesis Telescope (ST), the 26-meter Telescope, and the 10-cm Solar Flux Monitor. It is a member of the Canadian Galactic Plane Survey , a project to map 60 degrees of the Galactic plane at numerous wavelengths with a uniform sensitivity.

PA1SIX six meter propagation - F2 and TE propagation on 6 meter

IonoProbe - Monitors the space weather parameters essential for HF radio, including SSN/SFI, Ap/Kp, X-ray/Proton flux, and Auroral activity. IonoProbe downloads near-real time satellite and ground station data, stores information for future use and displays it in a user-friendly way.

RecAll - AudioCapture recorder software for Windows, Runs in the background, and starts recording when sound is detected from the microphone input.

The Radio-Frequency Ground - You were told that your audio was no good, that you had "RF in your audio ? This is also known as RF feedback

Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system

Rtty interface (FSK/AFSK) with sound cards - "How to remove the so called ""ground loop"" and the reentry in the RTTY broadcast and make radio and PC happily coexist"