Hi Tom,

"K7ITM" wrote in message
oups.com...
"radio" implied to me that you are dealing with a multitude of signals
in that bandwidth, not just one, and my practical experience tells me
that you will have to deal with a wide dynamic range. What do you do
with the interfering signal that's 20dB above your signal of interest?

Ah, the classic wideband SDR problem! You filter it out, of course, with an
adjustable notch filter (or two or three or...). Or at least that's all I
know to do about them...

OK, so 1.25Gsps gets you to maybe 500MHz bandwidth. That's still a far
cry from 2GHz. Why would you be worried about the flatness over 2GHz
when your bandwidth is "only" 500MHz?

So that you can tune around over 2 or 3GHz and everything's still flat. I
realize that's probably not really absolutely necessary, but as I say,
people are asking for these levels of flatness, and if it's readily doable
sometimes it's easier just to do what's ask rather than try to educate them
about why their request isn't really needed. :-)

---Joel