Clue: Longtime cable inits.

Answer: TNN

Length: 3

---

Similar Clues:

• Longtime NBC inits. (SNL with 3 letters)
• Big inits. in cable (e.g. TCI with 3 letters)
• Cable film channel inits. (TCM with 3 letters)
• Atlanta-based cable inits. (TNT with 3 letters)
• Longtime news inits. (UPI with 3 letters)
• Cable TV inits. (e.g. HBO with 3 letters)
• Cable inits. for a cinephile (TCM with 3 letters)
• Former cable inits. (TNN with 3 letters)
• Cable company inits. (RCN with 3 letters)
• Cable inits. since 1996 (MSNBC with 5 letters)