[BC] IBOC & Overmodulation

[wpio fm radio]

Williams, Chris (Albuquerque) wrote:
> WLAZ or WFIT? I think WFIT is transmitting in IBOC but I havent been home to verify that. If they are over modulating then call (Terry I think) and she will call her engineer who lives in Orlando and I'm sure they will fix it.
> I do not know anything about WLAZ. Let us know what happens.
> 

I didn't know if it's ok to accuse a station by call of 
overmodulating here on the forum.

It's WLAZ.  I cannot credit their loudness to high density 
processing.  But I haven't seen it on a monitor yet so I 
can't make much of it at this time.

WFIT is a perfect 1st adjacent neighbor, and they went 
digital last summer.  I noticed on our Inovonics monitor 
that they have great modulation control.

The original reason for the thread was to ask if it's true 
that an IBOC digital FM station "has" to control it's main 
channel modulation, so that it's digital carrier can work ok.

I'd like to know the answer to that.

Randy Henry