It's all about the Software

See, pictures are magic. They pull answers out of the crowds using SDRC and this thing loosely called a forum.

{^_-}

A general rule to follow that will not get you in trouble with SDRs, or for that matter ANY radio, is that it is uncalibrated until you apply a calibration cluebat to the poor thing. Your setup is guaranteed to NOT be calibrated to any any material degree. You will have to insert some accurate signa...

Did you ever adjust the RF gain on the Pluto? If yes is the antenna connected to the Rx antenna port?
{^_^}

Attach a charger to the second Pluto port. The Pluto is crying for more power. And USB 2.0 power delivery is very weak. Did you ever ask yourself why the designers put that second port there for more power?

{^_^}

A full size screen shot showing the problem is required. You are probably missing data that is required or have an invalid entry.

{^_^}

"This device did not start properly, possibly due to insufficient USB power. Reset (reconnect) the device and try again." I suspect its "possibly" is more like assuredly. 3.0.27 still likes Pluto. Did you lose your auxiliary power input connection? Is your USB hub overloaded? Is Pluto showing its di...

I would suspect your cable of being bad.
{o.o}

The rtlsdr dongle on AGC is next to useless as it's "AGC" is not tuned for SWL conditions and leads to easy overloading. It does not have a manual "ATT" setting. It has gain settings from a useless 0 (or even below with some adjustment curves) to over 40 dB. The optimum setting is typically about 20...

I believe you mean non-modal. That's a firm wish I've had for all the currently modal dialogs such as properties pages.

{o.o}

I'm not sure SDRC can be happy in a machine with only 2 Gigabytes of memory. Probably some of the added features have pushed it beyond what your tiny little system can support.
{o.o}