Yes! Certain Live streaming services can help you to watch Travel Channel without cable, and there is no need for any activation process via Travelchannel.com/Roku. The available streaming services are Philo, Fubo TV, Hulu with Live TV, Sling TV, AT & TV Now, and YouTube TV. All that you have to perform is to subscribe to these packages that consist of the Travel Channel app. Pay your bucks and thus completes the subscription process. Finally, install the app and activate the app ton start watching Travel channel on Roku without cable. 
For more and detailed information about Travelchannel.com/Roku, call our customer support team @ +1-805-741-1200

Even if you don't have cable, you can find all the shows that you want to watch on Travel Channel - online. There's a lot of shows on the YouTube that you always can find on cable TV. If you ask me, it's not a problem to find what you're interested in on the Internet right now.