Hi @jazzlauri,
Hello and welcome to the Roku Community! We appreciate you reaching out to us with your inquiry.
To begin with, Roku devices are designed to stream online content, and they require an internet connection to function. This means that you can easily connect your Roku device to a different TV using an HDMI cable and an active internet connection, and enjoy your favorite shows and movies seamlessly.
Moreover, you can still watch Live TV on your Spectrum TV with the Spectrum TV channel.
If you need any further assistance or information, please do not hesitate to let us know.
Thank you for choosing Roku.
Best regards,
Rey
ERey.
Roku Community Moderator