Nextion noise in RX

MVS Sarma VU3SMV  noticed noise on his receiver generate from his Nextion display.   He placed a 2.2mH RF choke in series to the 5v line feeding the  Nextion display.   He also placed a 220µF capacitor across the 5v and Gnd terminals for the Nextion.  The hash was reduced to just 10% of its original value.