HDMI Modulator RF Converter RCA Coaxial Composite VHF UHF SDR Demodulator Adapter w/Antenna in/Out & Channel Switch for Roku Fire Stick Cable Box HD Digital AV Component Video to Analog NTSC Coax TV
...nals into analog TV ( RF )signals which have ultra long distance transmission to achieve watching movies / playing games / sharing program videos pictures / photos on CRT TV or other old televes in different rooms or farther away from the hdmi video source.
It's a great long range VHF / UHF signal booster amplifier modulators !.
