Golf Channel is an encrypted cable network, so an indoor digital antenna will not pick it up. Do not fall for the Peacock checkout trap either: neither Peacock Premium nor Peacock Premium Plus includes the continuous linear Golf Channel feed, and Fubo dropped Golf Channel completely when it lost all NBCUniversal and Versant channels.
Your cheapest month-to-month path is Sling TV by pairing Sling Blue with the Blue Sports Extra add-on, which streams in 1080p at 60fps across three simultaneous screens at home. Watch out when selecting your Sling plan, because standalone Sling Orange excludes Golf Channel even if you buy Orange Sports Extra, and Sling Blue omits local CBS stations for weekend final rounds. If you want Golf Channel, CBS, and NBC in one guide with no hidden regional sports fees and easy online cancellation, YouTube TV, Hulu + Live TV (which also unlocks ESPN Unlimited for morning PGA Tour Live featured groups), and DIRECTV Stream's MySports genre pack all include the channel in their base lineups.