rtl-sdr.com

Hi
Where is the Antenna? Did you use a HW Amp?
Can you make a Picture of your setup?
Let me say it so to get a SDR Dongle to run good is need much €€€ to going into.

I use this one: https://airspy.com/airspy-hf-discovery the are very good. The have an Update who support a wider Bandwith.

try to find out what freq the use.

you can look for a smartphone repair Shop who solder.

Hi I found an Open Data List with all TV, Radio and DAB+ Tower. So i thought about why not make a Heatmap when I take the Train. Since I know where I am -> GNSS and who the Tower is -> Open Data List and the Output power to it should not be hard to scan only the Channels who are in use in that Area....

Hi
A new Version of SDR# should support Multiple sessions. And there is a Russian Tool to Output Multiple Audio Channels.
You need just buy VB Cable to have Multiple Virtual Audio Channels.
And there you go... Pls report if it work for you.

No

1) its some Weird Amateur Radio stuff
2) its "just" noise

If you have a Laptop take them and drive in a different district and see if its there to.

Hi
The problem is ordering something from outside of the EU is I have to pay ~50% Tax in total.

Nope but do you think its good when the hole neighbourhood know what Porn you watch?