CCI makes a real nice 2 stage BB RF driver with MRF475s. It is set up for class a so needs a good heat sink. A friend build one and we set the bias back a bit. Frank -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/attachments/20080212/adedc841/attachment.htm