I run AO40rcv on a Pentium 133 laptop with the built-in sound. It works flawlessly. When the squint is less than ~25 degrees I get an error on maybe 1 out of 200 packets. Doug NA1DB ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org