How To Check The Gain For Dump978:

piaware-config --show uat-sdr-gain

How To Check The Gain For Dump1090:

piaware-config --show rtlsdr-gain

How To Change The Gain Setting For Dump978:

sudo piaware-config uat-sdr-gain 00      #Replace 00 With The New Setting

How To Change The Gain Setting For Dump1090:

sudo piaware-config rtlsdr-gain 00       #Replace 00 With The New Setting

Now Let's Restart Dump978 And Piaware:

sudo systemctl restart piaware
sudo systemctl restart dump978-fa

Now Let's Restart Dump1090 And Piaware:

sudo systemctl restart piaware
sudo systemctl restart dump1090-fa