> On 13 Jun 2013 at 21:29, Geoff wrote: > >> The 6BY6 is a better tube for high signal >> levels and it has much less noise. Developed for early FM radios and >> soon surpassed with better choices. > > Better choices? Like what? > > Ken W7EKB > Various 9 pin tubes, 12AT7, 6U8, etc. Carl