Hi Joe, thank you for your support , now the prblem is fixed. Penelope provides full output with 0dBu oudio input. 73" Kurt, DL9SM -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20110310/39bc07d8/attachment-0004.htm>