OE5OHO Personal Stuff



Logo Info War

While all the other pages are about amateurradio - this page introduces a different view on our medium "shortwave". In 1998 I was asked by the ARS Electronica (Museum of the Future, here in Linz) if I could help them with a project. I immediately said "Yes, I will help you" and suddenly I was involved with ART (what an experience!).

A kind of operator - huuh?!

In 1998, under the banner of "INFO WAR", the Ars Electronica Festival of Art, Technology and Society, is appealing to artists, theoreticians and technologists for contributions relating to the social and political definition of the information society. The emphasis here will lie not on technological flights of fancy, but on the fronts drawn up in a society that is in a process of fundamental and violent upheaval.

The following reveals a bit of the mysterie about the RADIATION PROJECT.


Probably HF getting into the mic?!

RADIATION

An Installation for Short Wave Radios/Computer/Sound System

by
Robert Adrian and Norbert Math

Radio Technic: Oliver Huber OE5OHO
for
ARS ELECTRONICA FESTIVAL 1998

In the second year of the 20th century the signals from Guglielmo Marconi's first trans-Atlantic radio transmission began their journey across the Solar System. Since then radio waves have become as common as air and our planet has become a new source of radio waves in the galaxy. All the radio signals ever produced since Marconi's experiment are still radiating outwards through space. The history of our century exists at the speed of light in the dark spaces between the worlds.

Marconi's radio used long wavelenths requiring very large antennas for transmission and reception. This remained the case for about 20 years - untill the technicians trained for the first world war returned home and began to experiment with short wave technology. It was discovered that short wave signals could be transmitted thousands of miles by bounceing them off the ionosphere. By the mid-thirties all the major countries were employing short wave radio for military and diplomatic communication. During the second world war radio technology became more sophisticated in reponse to the need for communication with armies and navies spread out across the world as well as the rapid deployment and control of air forces and for subversive information warfare involving encryption, deception and propaganda.

The "RADIATION" project concentrates on short wave radio - the wave-lengths used mostly by security/espionage agencies, national propaganda/information stations and by amateur radio operators. Many short wave transmissions are received as bursts of coded or scrambled signal - morse, fax or image transmissions and secret commercial or political data. The short wave spectrum contains every human language and every kind of music. Short wave signals are often distorted by atmospheric conditions, bursts of electro-magnetic activity on the Sun, interference from other transmitters or local static - with short wave radio it is "radio" itself that is in the foreground.



Project description:
A computer program controls the output from four Short Wave Radio Receivers and fed over an amplifier into four public-address loudespeakers at the entrance to the Brucknerhaus (Ars Electronica Festival '98). The computer program, written in Linux, listens to the audio output and performs a spectral analysis of the sound quality. It then either keeps the existing array of stations or distributes new channels to the loudspeakers as necessary. Each radio has 40 channels stored in memory which are available for the computer selection process. 

The loudspeakers are mounted on 3 meter poles placed 4 meters apart beside the path to the Brucknerhaus.

The installation...
Equipment: 
  • 40 meter antenna.
  • 4 Grundig short-wave receivers.
  • Pentium notebook computer and 8 relais switchboard.
  • 4 channel audio amplifier.
  • 4 outdoor loudspeakers.
RADIATION Demonstration Sound 
Hear a simulation of the installation on Real Audio





In case you were linked to this page and you cannot see brown buttons in a yellow frame left click here.


All pictures and contents are copyright by OE5OHO Oliver Huber.
Email me by clicking on the rotating Email-Symbol on the left - or copy the following addresses into your personal Email-program:

[email protected] or try [email protected]

In case your Email gets rejected try again and leave me a note on my guestbook!