Please cut and paste (or provide a screenshot of) this data when asking for help.
SDR(type: 'rtlsdr' address: '001:019', serial: '00000001', purpose: '1090', gain: 'autogain', biastee: False)
total used free shared buff/cache available Mem: 3.8Gi 944Mi 1.1Gi 218Mi 2.1Gi 2.8Gi Swap: 3.8Gi 0B 3.8Gi
Filesystem Size Used Avail Use% Mounted on udev 1.7G 0 1.7G 0% /dev tmpfs 1.9G 116M 1.8G 6% /run /dev/mmcblk0p2 59G 3.4G 52G 7% / tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 5.0M 16K 5.0M 1% /run/lock /dev/mmcblk0p1 510M 66M 445M 13% /boot/firmware
top - 16:31:00 up 51 days, 6:39, 0 user, load average: 0.29, 0.27, 0.29 Tasks: 272 total, 1 running, 270 sleeping, 0 stopped, 1 zombie %Cpu(s): 0.0 us, 16.7 sy, 0.0 ni, 83.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 3841.3 total, 1113.2 free, 944.2 used, 2184.7 buff/cache MiB Swap: 3841.3 total, 3841.3 free, 0.0 used. 2897.1 avail Mem