I want to decode radio amateur packets,they come at 1200 bps but my receiver does not have digital output: may I use a simple amplifier and signal shaper (Two anti-parallel connected diodes and one transistor), to convert analog (processed) output into square TTL level signal? Thanks a lot. ------------------------------------ netQ http://virtuaweb.com/picprog "Home of amateur PIC programmers..." -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.2 mQCNAzV38BkAAAEEALfWv9j3f+tZ+z2IW+2o9Ebx4bUGnHjHPqIe0a6yVKawaeV/ Y4I6L2/A0ddbVMG8+qJ0MvHNkr3DzYkpW+hTl9zAzXkKBdZ3GA5bbvot7entl/O2 YDtRWUV730koxBo5iFFUbJH5kbmkox+h3znj34zPnZNWzNaqOAwol3wABfBNAAUT tBxOZXRRIDxuZXRxdWFrZUBpbm5vY2VudC5jb20+ =0bVU -----END PGP PUBLIC KEY BLOCK-----