I am now the proud owner of a new solder station, I have been digging thru the closet getting out old junk and fixing it and ran across my old junker TRC-492. It isnt much but I might set it up at my girlfriends house for emergency situations. I took the Transmit final out years ago and I guess its misplaced. Radio shack website is confusing for me but I think it specifies I need a 2sc2075 transistor for transmit. great 6 bucks for 2 of them on fleabay... I can swing that I just want to make sure thats the one and the only one I can put in it. Not much info on these things online except they were made not to upgrade. Thanks