In early September Com Hem will shut down the analogue TV system. You can however already move to Digital TV.
To help with the move Com Hem have a web page on the move in several languages (Svenska - English - العربية - Af soomaali - ትግርኛ - دری ).
https://www.comhem.se/tv/digitalisering
Visit the web page now and check what you have to do to make sure you don't loose your TV channels on September 8th.