Hi 480 a K3 ? i don't know but a new trx is on air ( prototype for now) the Tokyo Hy-Power HT-200 QRP. 10 w hf 20 w on 6 meters.. SSB CW AM FM only already made i think... You can found the little trx on the hamfair 2006 in Tokyo. Jean louis F5NHJ K2#5371