The local PBS station here in Philly (WHYY) broadcasts all of their audio in stereo. An engineer told me that it's because of some combination of bandwidth issues or they don't have the right equipment to send the audio in 5.1. Is the audio for PBS HD East and PBS HD West on 12140 V 30000 on 125W (AMC 21) in stereo or is it 5.1? Is this the satellite my local TV station is using for its feed? Thanks for any help.