Thank you for the thoughtful responses!? Great ideas to digest.? I have the Solid State Design book but have not worked my way through it.? May be that is homework :-)? The explanation at the start for biasing transistors always made more sense to me than what I read in other books, including EMRD.? It is a little hard that parts become obsolete and so the projects might be difficult to build as is.? I suppose it could be broken down into smaller bits and then modelled in SPICE with best guesses at replacements for hard to find bits.
I thought buying the uBitx would be kind of a simple and unchallenging project radio.? I bet a lot of people didn't expect it to take us where it has!I haven't done any of the work to make it better, but I appreciate all the work that is being done.? It has prompted me to think deeper about multi band transceivers and it has been interesting to observe the community (and certain individuals in particular) work out solutions.? I think we are all learning more than if we were content to just play radio on the major commercial offerings.
Thank you to Ashar and all of you who have spent so much time working on this and sharing the knowledge!
-Jeff
AG7NW