Topband: SDR-1000 IMD-DR, blocking dynamic range, IP3,and IP2 measurements

[Bill Tippett <btippett@alum.mit.edu>]

W4EF:
 >"It has essentially the same dynamic range regardless
of tone spacing"

         True but BDR is ~100 dB for the SDR-1000 versus
~130 for other rigs (ARRL measurements).  BDR seems to be
the weak point of SDR so far.  Perhaps 32-bit sound cards
will eventually solve this issue but current 24-bit sound
cards all seem to share this weakness.

                                 73,  Bill  W4ZV

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