atv.zip ( atv.exe ) is a very small DOS application for ATV radio amateurs. If you start up the program, you can read this :

YOUR PERSONAL VGA TESTPATTERN.

THE TESTPATTERN RESEMBLING THAT OF BROADCAST SYSTEMS, SERVES FOR OVERALL VISUAL ASSESSMENTS. SPECIAL ATTENTION WAS GIVEN TO THE NEED OF AMATEUR-TELEVISION FANS. YOUR CALL-SIGN, AND CLOCK-TIME IS DISPLAYED WITH PERSONAL STANDING. FOR REAL TESTPATTERN MEASUREMENTS THIS VIDEOGENERATOR IS NOT SUITABLE. HAVE FUN IN USE, AND FREE COPY FOR ATV-FRIENDS ALL OVER THE WORLD.