I don't know if it has already posted. In any case I didn't found such tip in the forums.

So, you got your first TV blaster or a vintage 70's B/W TV on a flea market but the only thing you get is some snow or a rotten channel at best.

Just buy an indoor antenna with amplifier and a 75ohm - 300ohm converter! I got my converter last week and I can even plug on my home TV coax cable !
Got mine on ebay for 3€ incl. shipping.

This works too to receive a better FM.

Have fun !