No output

[iMarkus]

Hi,

I tried your code using

rtl_fm -M am -f 868.300M -s 48k -g 49.6 | ./example.py

But all I see is this:

Found 1 device(s):
0: Realtek, RTL2838UHIDIR, SN: 00000001

Using device 0: Generic RTL2832U OEM
Detached kernel driver
Found Rafael Micro R820T tuner
Tuner gain set to 49.60 dB.
Tuned to 868552000 Hz.
Oversampling input by: 21x.
Oversampling output by: 1x.
Buffer size: 8.13ms
Exact sample rate is: 1008000.009613 Hz
Sampling at 1008000 S/s.
Output at 48000 Hz.

If I just use this command:

rtl_fm -M am -f 868.300M -s 48k -g 49.6

I get a lot of unreadable content.

Do you have any hints for me?

Best regards