Hi folks looking for the perfect high IP3, low NF amp: A good substitute for a low noise Norton amp or push pull 2N5109 system is a modified CATV Reverse amplifier Typ R2005200P12 from PDI-Sirenza. 73 de Ulrich N1UL -------------- next part -------------- An HTML attachment was scrubbed... URL: /pipermail/hpsdr-hpsdr.org/attachments/20060802/3e1486a7/attachment.htm