"clifto" wrote in message
...

I suppose that's possible, but http://www.fybush.com/site-010801.html
confirmed my memory that the two stations' transmitter/antenna sites are
fairly far apart.


Yeah, but the IBOC off the same antenna idea is the closest I can come up
with for an explanation for the times in which WSCR and WBBM were
alternating IBOC broadcasts. The fact that WBBM is no longer broadcasting
IBOC sidebands suggests CBS has an experimental interest in IBOC rather than
a fully committed interest in The Radio of Tomorrow.

I sure wish I'd grabbed a portable and checked the directions in which the
broadcasts from WBBM, WSCR and their IBOC sidebands nulled out.

Speaking of nulls, there's one obvious problem with having a significant
distance between the analog broadcast antenna and the IBOC antenna. Some
IBOC radio owners would end up in areas in which the analog and broadcast
antennas are at right angles to each other. The IBOC sidebands might get
nulled out, and the High Defination Radio listener would get stuck with the
Lo-Fi'd downgraded IBOC-analog channel.

So, maybe they were not IBOCing the same tower. But I think it's possible
CBS could consolidate both broadcasters to the same site eventually. Save on
engineering costs, make a few bucks off the surplus real estate and reduce
the tax burden.

But I don't know. I do like to speculate.

Frank Dresser