[BC] WCBS dumps IBOC, returns to "High Definition" AM

[Robert Meuser]

Two points.

1. WCBS never used diversity delay. Analog and digital were always out 
of sync.

2. The processor is (or was) a 9200



Kevin Tekel wrote:

>After less than a week of transmitting the IBOC buzz, NYC's 880 WCBS has
>returned to "High Definition" analog AM with crisp, clear 10 kHz audio.
>A possible reason for this may be the numerous complaints they received
>due to the 8-1/2 second delay the IBOC exciter added to their audio, which
>made their Yankees play-by-play out of synch for people listening at the
>game or while watching it on TV.  I first noticed the IBOC hash generator
>was off during a Yankees game today, but now during normal "Newsradio"
>programming it is still off, and their audio sounds a lot better too.
>
>When they had the IBOC on, their analog audio was still pretty crisp
>(they had it in 8 kHz bandwidth mode) but it had a strange kind of
>clipping distortion which made the announcers sound like they were holding
>their nose while they spoke, and for an all-news format that can get
>rather annoying.  There was also some rather obvious slack in the AGC;
>when jumping from one programming element to the next, the audio would
>often start out very quiet and gradually ramp up in level.  With their old
>processing (Optimod 9100?) now back in service, there is still a little
>gain-riding in these instances but it is a lot smoother and all of that
>nasty distortion is gone.  And of course on a wideband receiver there is
>no mistaking that beautiful full-bandwidth audio!
>
>
>
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