On Thu, 2 Aug 2007 09:35:19 -0700 (PDT), Chris Kantarjiev wrote: >2N4124; >the big difference is that the 4124 is limited to 200mA collector current. This is a rather non-critical part. Anything that's close works fine. I've built at least a half dozen of them for four different radios with a 2N4123. 73, Jim K9YC