I'm now considering TDA5051A to transmit information over the 230VAC power network. To avaid any interference between neightbours I will need to stop transmision beyond the appartment electrical network.
As I understand from its datasheet the transmission will be at the frequency about 132 kHz. From my point of view it will be enough to place some filter (i.e. place a ferrite bead at the apartment main inlet). But I'm afraid that this can suppress the signal in the areas where I don't need any suppression.
T/Rn - Digital transmitter and receiver.
Ground and neutral wires are not shown here for simplicity reasons.
In real world there is a transformer between HV power line and an apartment, please consider the line on the transmission towers as a 230VAC line.
So the question is: if the conception is correct - what kind of filter I should use if the signal is 132 kHz and main AC frequency is 50/60 Hz?