Check this out. It may answer a number of questions you have. http://www.polyphaser.com/ppc_PEN1016.asp 73, Chris, KD6OUB ---- Sent via amsat-bb@amsat.org. Opinions expressed are those of the author. Not an AMSAT member? Join now to support the amateur satellite program! To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org