HDMI to old tv adapterRF HDMI Modulator - HDMI input coaxial output with RF analog signals,easily & reliably Connect your new HDMI devices to a RF coax display the image quality will be lower than RF analog signals (more like 480p); NOT applicable to ATSC format !HDMI Modulator - With the zoom function that you can switch the output screen up and down as well as amplitude , brightness , contrast and chroma via the remote control .TV ModulatorHDMI to RF Coaxial Cable Adapter for TV - Convert HDMI digital signals into VHF analog TV ( RF ) signals which are great HDMI extenders that will carry out ultra long distance transmission of HDMI signals , then you can achieve sharing program videos / pictures on other tvs in diffrent rooms or farther away from the hdmi video source.hdmi to coax analog tv transmitterHDMI to Coax - Please check your TV supported formats before placing an order because this converter only output PAL-BG , PAL-l , PAL-DK and NTSC-M these four TV formats, if your TV does NOT support one of these 4 , the converter will not work ! And this is HDMI to RF coaxial converter which does NOT work under the reverse direction,please don't use it to convert RF signal into HDMI signal!fire stick to old tvRF Modulator - HDMI to coax converter will hook up your streaming media players ( Apple TV, Amazon Fire Stick , Fire TV, Roku , etc.) , game consoles ( PS3 , PS4 , PS5 , Xbox 360 , Xbox One , Nintendo Switch etc.), DVD , Blu-ray players , VCR , Laptop , PC or computer etc. newer HDMI-equipped components with an older TV or video equipment; Then you can watch videos / play games / sharing old pictures / photos on channel 3 on older TV models (CRT) and other non-HDMI devices.hdmi over coax