A television station in Boston has shifted its primary network affiliation to Sinclair-owned comedy network TBD. The switch happened last Tuesday when WRNN-owned WMFP (Channel 61) replaced OnTV with TBD. The change gave the Sinclair multicast network instant distribution on pay TV systems in the Boston metropolitan area, including standard definition and high definition carriage on Comcast (Xfinity), Verizon’s Fios TV, Charter (Spectrum) and RCN. It also made TBD available in the Boston area via Dish Network and DirecTV satellite, while Atlantic Broadband now carries the high definition feed of the channel. Previously, TBD was offered on a digital sub-channel of CBS-owned WSBK, which replaced it with programming from QVC.