On 06/25/2020 07:21 PM, Silvio Cardero wrote:
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Silvio Cardero
Chief Scientist
520.247.7275 (cell)
Web www.ed2corp.com <http://www.ed2corp.comrp>
Email Silvio@ed2corp <http://www.ed2corp>_.com_
7636 N. Oracle Road
Tucson, Az. 85704
Same-box loopback without considerable attenuation in the coax is not
healthy for the receiver (worst case), and best-case will cause
non-linear operation of the receiver gain chain.
Most SDRs are designed so that their receivers can be used directly "on
the air", and so have receiver gain stages that are optimized for
that application. That means that they will be horribly non-linear
when presented with the high power levels produced by a typical
transmitter.
