On Sep 11, 5:45 pm, wrote:
On Sep 11, 6:57 pm, IBOCcrock wrote:

Did you notice that WTWP has had their IBUZZ exciter off for days ?
Now, I can hear WTRI without buzzing again !

Yeah, I've heard the buzz on some of the DC stations, but thought is
was probably due to some noise source local to my neighborhood.
There's lots of stray noise on the AM band these days, so I simply
ignored the buzz as best I could. If a station was (or stations were)
responsible for this, shame on the engineers running the equipment.

-Dave Drumheller

DD - The Engineers are doing the best that they can with
the IBOC Transmission Scheme; which uses reduced
Analog Bandwidth and Extended Digital Side Bands.

It is the IBOC Technology that is the Problem especially
when you are using an Analog AM/MW Radio to listen to
and Analog Signal coming from an "HD" {IBOC} AM/MW
Radio Station that also has an "HD" {IBOC} AM/MW
Radio Station on both Adjacent Channels : one 10 kHz
above; and one 10 kHz below. You will notice the Digital
Hash. When this happens and it will for many AM/MW
Radio Listeners in the future. Your 'choices' are :
1 - Tune to a different AM/MW Radio Station
2 - Change to FM Radio Listening.
3 - Buy an "HD" {IBOC} Radio and then Listen to your
Favorite AM/MW Radio Station in "HD".
The AM/MW Radio Stations using the IBOC Technology
'hope' that you will do # 3.

FWIW - A couple of the posts that I have read else where
have basically said that when the Poster had the Digial
Hash problem with their favorite AM/MW Radio Station;
and went out and bought a "HD" Radio; the "HD" Radio
reception was as good as and usually better sounding
than the 'old' Analog AM/MW Radio Station prior to IBOC.
- - - Sounds like back to Square-One at a higher cost.

For the common {average} AM/MW Radio Listener :
at Home; in their Car; or at Work in an Office. Who
lives in an Urban Area with good Signal Levels : IBOC
as a Mass Media Technology may provide a better
Radio Listening Experience.

But for those AM/MW Radio Listeners in the Suburbs
and Rural Areas with limited Listening Choices and
weak Signal Levels : IBOC as a Mass Media Technology
may prove to be a Radio Listening Experience they
find lacking.

FM "HD" Radio and the FM Radio Band Plan are a
different matter. For the common {average} FM Radio
Listener : IBOC and "HD" FM Radio should provide
them a better Radio Listening Experience in all areas :
Urban; Suburban and Rural as IBOC is fully adopted
and the HD Signal Level is increased to fill-in the
Gaps of the Digital Broadcast Signal Coverage.

that's my assessment ~ RHF