Cheap option for stronger signal

Cheap way to strengthen its antenna signal. Works easily. Amplification of the signal on my TV from 33 to 85 !! (100). I have the cable separated with a switch to power an AVR receiver and the TV with the aerial signal and set the amplifier from the switch so that both signals are amplified. This does not work the way I was thinking that. The AVR-Receiver received only an antenna signal, albeit at the same time the TV was turned on, which of course is counter-productive.
That's why I put the in-line amplifier by the switch in the wiring harness to the TV. Now everything funzt again, as intended.