many thanky for the many responses to my question about the noise
blanker. I could not test it until last week, because my house was
struck by lightning and most of the equipment in the shack broke though
I had unplugged everything and the antennas disconnected!
Fortunately the OMNI VI is still ok, only the power supply had to be
Anyhow now I know the noise blanker is working. I tested it with a
battery hand drill as suggested. Apparently there is no noise to be
blanked in my location, which was suprising to me, because I live
almost at the center of a middle sized town in Germany.
73 Knut DK5AD