I am wondering using current DSP chips if speeds like 56k7, 63kbit etc could be reached using modulation schemes such as QAM/QPSK ? What would be stopping this from happening ? ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org