rtl-sdr.com

What country? Most likely to be DVB-T or ATSC (digital HDTV) depending on where you live.

Try removing jumper JP2 on the PCB (which is next to the USB data port). That prevents power sharing between the Pi and Kerberos.

Can you try receive broadcast AM? Please upload a screenshot of your settings, and what you see on the screen when tuned to the beacon frequency.

I'm not familiar with that brand, it might not be an RTL-SDR.

Please upload a photo of the PCB, and if you can get the markings on the chips that would help. I can see if it's actually an RTL-SDR then.

DId you run the install-rtlsdr.bat file in SDR#?

Please try our guide at www.rtl-sdr.com/QSG , There is also a troubleshooting section after which covers most issues.

Very interesting! Could we see some information on what a ground station is like? What components are used?

What SDR program, and can you try other programs to see if they do the same thing?

Very very nice! Thanks for working on this.

I'm assuming those red circles are areas which you've got transmitters on? Would be keen to hear more about your setup and results too.

I should clarify that to note that it's the ADC sampling at 28.8 MHz. However after the ADC the RTL2832U down samples that to a 3.2 MHz MAX BW.

Can you upload here what your image looks like? There are no images on your web server. Edit: It eventually loaded. Yeah your images show that you've received absolutely no signal at all. Only the background map that comes from the software is showing. You'll want to check your signal first with a G...