Nationals: 206 ESPNHD 209 ESPN2HD 229 HGTVHD 242 USAHD 245 TNTHD Locals:2- FOX I average about 3 to 4 audio dropouts per hour. My system: H20/600 - via HDMI directly to a Samsung LCD LN-52351w TV. No AVR connected and can still hear drops thru TV speakers. H21/100 - via HDMI to a Panasonic Plasma TH42PX50 TV, with an optical connection to a Sony AVR STR-DE845. The panel displays/changes when the Dolby signal changes. Most audio drops I hear, some I just see based on the display. H23/600 - via HDMI to a Denon AVR 1610 then on via HDMI to a Panasonic Plasma TCP-50S1. Nothing on the display changes, I just hear the audio drops.