[falcon123]

completely off the point of the topic but doing new boards to repair/replace/upgrade "unobtainium" boards for early 70's electronics is quite doable,even to the point of re-engineered boards like power supplies. there are several examples for sale on ebay for the sx1980 and sx1010 pioneers. and soon the sx-939 as i have a prototype in my 939. it runs much cooler and is quality g-10 board too. but im with everyone else when it comes to tube radio.i saw a youtube about some guy who re-engineered a hallicrafters sx-100 to solid state with NO tubes and a different power supply. the question remains ,"but why?" even the us naval academy converted a hammarlund hq-100(??) to solid state as an engineering exercise in the mid '60's.they published a report about it as well.