 Depending on the temperament used, "the" tritone, defined as three whole tones, may be identified as either a lesser septimal tritone (in septimal meantone systems), a greater septimal tritone (when the tempered fifth is around 703 cents), neither (as in 72 equal temperament), or both (in 12 equal temperament only).Österreichischer Versuchssenderverband

The Österreichischer Versuchssenderverband (ÖVSV) (in English, Austrian Amateur Radio Society) is a national non-profit organization for amateur radio enthusiasts in Austria.Key membership benefits of the ÖVSV include the sponsorship of amateur radio operating awards, radio contests, and a QSL bureau for members who regularly communicate with amateur radio operators in other countries.