Thank you very much for your nice "Welcome aboard", indeed I appreciate all of the answers above and I'm pretty sure that this topic will have some "echo" throughout community. These are maybe the most common questions asked by those with just the license of operation in hand and a few basic knowledge of electronics. I can't wait to see the uBitx on my desk. Meanwhile, I can't find some genuine information about the output impedance of the uBitx itself. Is it 50 ohms ? Gordon Gibby previously sugested that a CB SWR-Meter will do the job on HF also. I found one but it's rated to 11m band only, or at least that's what on the label. Can someone tell me what can go wrong it I start using it ? And by experiment, does anyone know how much SWR can uBitx handle without permanent damage?