To answer a few questions on this project. I'm building "The Suffolk 144mhz Transverter" by Sam Jewell G4DDK. It is in "The VHF/UHF DX Book" from RSGB. The PCB's are available from <http://www.farcircuits.net> along with documentation. The PA will use a Mitsubishi RA60H1317M it is a 60 watt amplifier from"RF Parts" a PCB is also available.