As I explain here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fS0bW63ZBMo.htmlsi=JV2vDsrlUzL_5Sq0 any claim over about 80 miles is not true. The HD and 4K have nothing to do with the antenna. The smarts to decode the HD is all inside the TV
Just looked at it and to be honest couldn’t figure it out how to replace the needle. Probably, the best way would be to contact the manufacturer. However, the needle usually last forever. My player is about 2 years old and there is no need to replace the needle any time soon 🤔