Thanks for interest and help.
Sure is a lot to know.
a. I was eyeballing the baseline visually on the Spectrum display.
I will try to attach the screenshot you requested.
Does it look “reasonable” for the noise floor level ?
(-95 to perhaps -120 seems “typical” for the sw bands <30 MHz that I usually see)
One more question, please:
b. Sometimes when I first start SDRUno, I cannot change any of the numbers
on the RX Control screen using my mouse wheel. It does work after
doing a start or two more, with shutdowns between.
Is there any “trick” to always being able to use the Mouse wheel to change and
enter numbers for the frequency ?