Sri for having forwarded it ! Here is what Rolf, DK2ZF had to say: Yea, we drown in information but we are thirsty for science! 73, Gerd, WB8IFM. -- Gerd& Traudl Schrick 4741 Harlou Dr Dayton Ohio 45432-1618 USA Schrick at copper.net WB8IFM