Reducing RFI off the powerline into radio set

[wa2ise]

Originally Posted by Electronic M

Many newer TV's/monitors (80's and newer) have this or a similar network...It's easier to just cut off the section of a junk set's PCB that contains this network add some power connectors and throw it in a box than make one from scratch....

That's essentially what I did, though I tucked mine inside the radio cabinet behind the speaker.

These pictures don't show this addition, but if you look closely enough, there is room for a board behind the speaker. I also moved the power cord cheater cord socket away from the AM ferrite rod antenna. There's a masonite back cover you don't see here as well.

Better pictures:
Caps in the filter are X2's.



This mod almost makes it seem like the early 70's on the AM band, before switching power supplies existed.