The looped through an external, disconnected Samsung receiver signal was attenuated the extent that it came on almost all channels when using the TV receiver to strong artefacts. Signal strength and quality are loud TV display 1-2% lower than when the unit is connected directly to the antenna socket.
Pro: Cheap (1.75 Euro incl. Shipping) Works seamlessly with DVB-C Low attenuation
Cons: The connector diameter slightly too low, I had to bend along the mass-Contact Power to the receiver minimal.