There was a posting on the HDTV-in-SFbay Yahoo group indicating that the digtal transmitters on Sutro tower were going to be turned off today for a tower inspection. Dish must be getting their feeds via an OTA antenna.
This happens from time to time. They don't have room on the tower at other levels for backup digital antennas. So when the digital antenna area is being inspected (or crews are just moving by) they just have to shut off the digital broadcasts. They have backup antennas for the analog broadcasts so the analog broadcasts can stay active at all times. They will have backup up digital antennas after the Feb'09 transition happens.
This happens from time to time. They don't have room on the tower at other levels for backup digital antennas. So when the digital antenna area is being inspected (or crews are just moving by) they just have to shut off the digital broadcasts. They have backup antennas for the analog broadcasts so the analog broadcasts can stay active at all times. They will have backup up digital antennas after the Feb'09 transition happens.