We had Tek showing this little marvel at the office during a training course for the bigger RSA6000 that we have. But unfortunately I was away on a field trial, bugger!
Pretty cool it uses basically the same s/w as the bigger brother, i.e. signalvu
Using real time spectrum analyzers, I prefer NOT to use the RSA6000 for anything that our "normal" SA's can do. I find the user interface not the best for just watching the spectrum, but that might just be that I doesn't feel comfortable with the UI.
And do not forget that the RSA306 is a lot slower than it's bigger brother in capturing signals, it's not a replacement for the RSA6000, but a compliment (but it IS ~25-50 times cheaper) Tek even got slapped on its fingers by governement agencies for selling too good instrument, forcing them to slow down exsisting instruments in a firmware upgrade and then the user had to apply for an option (free of charge) to bring it back to "normal" if they were worthy
Now the RSA306 do have nice speed, size and portability, making it a really cool tool when out in mother nature doing measurements. I love running instruments on USB power!
Looking at phase noise data published it is clear that this is not a threat to normal bench-top instruments. Tek has cut some corners when designing this and it shows in the numbers.
Still I'll try sqeeze out some fundings for this little box, it sure will be handy when tesing equipment outdoors.