With WOR I was unable to tell what the IBOC signal sounded like
because their signal was so strong I could receive it on my teeth.
WPAT is far weaker and I hear the same thing you hear from 910 to 950.
On my receivers it sounds like square waves and buzzing on either
side. Hash lower and buzzing upper. Beyond 960 all is quiet so it
isn't dimmer or power line noise.

If you can't get enough of WPAT's noise-generating IBOC signal, try
1480 WZRC. As of 2:00 PM on Thursday afternoon, the IBOC was turned
on at that NYC station as well. Listeners of 1500 WGHT -- whose
transmitter is only 17 miles away from WZRC's -- will definitely not
be pleased when they tune in 1500 AM and hear a constant "HISSSSSSSS"
in the background. Yes, IBOC is currently daytime-only -- but so is
WGHT itself (to accomodate WTOP at night), so there's no escape!

Furthermore, 930 WPAT is a hodge-podge of time-brokered ethnic
programming, and 1480 WZRC is all-Chinese. Exactly what is the point
of broadcasting these zero-ratings, zero-advertiser, zero-listener
formats in IBOC digital?? And as for 710 WOR, most of its 85-year-old
listeners probably don't even know what "digital" means. Regardless
of its technical flaws, IBOC might have a chance if they put it on
something like Radio Disney (1560 WQEW), as an attempt to attract more
younger listeners to the AM band. Otherwise, it's just being wasted
on the type of listeners who haven't bought a new radio since 1974.