It's a MythTV setup - one backend with two frontends. With Time-Warner, I had a HDHomerun dual-tuner to record 2 unencrypted RF channels, plus a Hauppauge HD-PVR hooked up to the cable box. Now the HDHomerun is useless (until I break down and put an antenna in the attic...), but I can record 3 unencrypted IPTV streams, plus one from the set-top box.