The first modification of Aliexpress Si4732 receiver, no freezing now.

 Si4732 Aliexpress receiver modification

After this ground modification no freezing at all. There is a small transformer inside the receiver. One coil is in ground path and the second coil is in a positive path. Each pulse in ground coil will cause puls in positive power path and the receiver freezes.

I shorted coil in the ground path to eliminate this pulses.