After months of negotiating and planning, PBS formally launched on streaming television service YouTube TV early Tuesday morning.

More than 100 member stations became available in dozens of television markets across the country, the first time linear PBS stations were available on a non-traditional television service.

Sacramento’s KVIE (Channel 6) and San Francisco’s KQED-TV (Channel 9) are among the member stations participating in YouTube TV.

Currently, only the main member station is available in most markets; sub-channels of member stations have not yet been added, though a national feed of PBS Kids is included on YouTube TV.

In addition to PBS, YouTube TV also added a new channel — the Oprah Winfrey Network — for subscribers. The network is owned by Discovery and has been absent from YouTube TV’s lineup since the service inked a deal with Discovery Networks in April.