Ok, Eric, I think that the noise source is not my problem. When I divide the spectrum into three channels centered at 400 MHz and a channel width of 266 MHz and
do not connect the noise source, I see -3.3 dBm in the left channel, -65 dBm in the center channel and -65 dBm in the right channel. Connecting the noise source does not make much difference since the power is so strong in the left channel. Is this behavior a problem with my TinySA Ultra?
I just checked this with my TinySA and the same issue exists with center frequency of 175 MHz and a span of 117 MHz.
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Ed, K0KC
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k0kc@...
http://k0kc.us/
