Ah thanks I kept running into these but never knew what in the world they were, the direct TV man before me used it on the VHF port on a coax to a 3 way splitter or maybe it was the in/out not sure what it really does or why he put in on there but at least I know the name from some googling it seems it decreases the power going through the wire? so i guess he had too much voltage.
The writing is PPCSHPP3-50 527 I tried googling those numbers came up with nothing
It might have been a trap considering that before DirecTV was there he did have cable so maybe it was a trap and then the DirecTV man instead of taking it off just hooked it up to his Diplexor and called it good makes the most sense to me
To me, it looks like a high-pass filter that our cable co. used to put on sub drops w/out internet or digital cable boxes, &/or on splitter runs to TV's w/out set-top boxes...to keep the (cable modem) low-freq return path from getting "dirty"...