Hi All - but I guess only Matt can answer this question,
At:
http://gnuradio.org/svn/usrp-hw/trunk/rfx/
I can find schematics for flex2400 receiver and transmitter, but none
for
the flex1800. So far I have been guessing that they are pretty similar
but
it would be nice to have the actual schematics for the flex1800.
BR/
Per