Adam said:Can anyone explain why 1440 AM was ahead of 120 AM by ~5 seconds and ahead of xm183 by ~ 10 seconds?
Simple. 1210 AM / WCAU broadcasts in HD and needs the delay in their regular analog signal to accommodate listeners whose radios switch in and out between the digital signal and the analog signal.
Same deal with XM -- you have all the analog-digital-download-analog conversion going on.
For example, neither WSAN / 1470 in Allentown and WEEU / 830 in Reading broadcast in HD, so they have no delay in their signal either.
As far as WYSP goes with the Eagles, they have the same situation. Since they broadcast in HD they delay their analog audio in order to accommodate their digital audio. I don't think they do it to sync up with TV audio (although that's a helpful feature).
Richard in Allentown, PA