For some reason my qled tv has an issue picking up lower vhf stations especially channel 7.1 (198 MHz). My older samsung tv's pick up the vhf stations without any issues (max signal) when hooked up to the same cable off the antenna. The only thing that's possible is that the QLED tuner is not capable of receiving the 198 MHz signal for some reason. Its done this since new but now it's out of warranty now. All other tv's we have in the home and even in our motorhome get a full signal on channel 7.1 (198 MHz)
ive chatted and called Samsung but get different answers each time but they are all canned answers because they just have rewritten scripts to read from.