can i get the tv listing using a roku3. i have a roku tv and get it there but im using the roku 3 on another tv and trying to figure out if i can get it using the roku3 thanks
Roku players can't display live TV by themselves, so there's no TV program guide. There are a few network tuners that have apps for Roku, and those apps would have the program guide within that channel. But that requires a different piece of hardware that Roku doesn't offer.
A Roku TV does have a TV program guide, but that's because it has an OTA tuner. Roku players have no such tuner.
In addition, if you're speaking of the "Live TV Channel Guide" within "The Roku Channel", it's missing on Roku 3s. I have no idea why.