SiliconDust HDHomeRun EXTEND. FREE broadcast HDTV (2-Tuner) Cut the cable and cut the rental costs. Watch FREE live HDTV on up to 2 devices simultaneously on your WiFi (802.11n or better router) or wired network. Converts video to H.264 AVC for more efficient streaming and better playback support on portable devices. Works with our HDHomeRun DVR so you can watch, pause and record. Watch and record in full 1080i resolution where available. HDHomeRun EXTEND streams to DLNA compatible devices on your network. Expand the number of tuners with multiple HDHomeRun devices. TV Antenna required.