Hi:
I do a bit of medium wave dx-ing and part of the joy is the
odd audible indications of propagation.

To me it is the difference between CD and vinyl disks!

David


-----Original Message-----
From: For blind ham radio operators
[mailto:[log in to unmask]] On Behalf Of Anthony
Vece
Sent: Friday, August 24, 2007 6:14 PM
To: [log in to unmask]
Subject: Re: FCC aproves HD A M broadcasting 24 hours a day

Hi Tom;

Digital AM. is magnificent!

Electrical noise just disappears.

Digital FM. is crisp.

73 De Anthony W2AJV
[log in to unmask]
ECHOLINK NODE NUMBER: 74389

----- Original Message -----
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 24, 2007 12:17 PM
Subject: Re: FCC aproves HD A M broadcasting 24 hours a day


>    Bob and all:
>
> I have two quick questions here:
>
> 1.  Even though digital radio may use less power than
analog, whatever
> happened to the idea of using frequency spectrum space as
efficiently as
> possible?  In my view, digital AM certainly doesn't do
that!  and
>
> 2.  Does digital AM or FM really sound that much better
than analog?
> Admittedly, I have only listened to digital or HD AM and
FM stations on
> analog equipment up to this point, but I really can't tell
much difference
> in overall sound quality.  Maybe I'm just loosing my
hearing, but I don't
> think so, or at least, I hope not!  (grin)
>
> 73 from Tom Behler:  KB8TYJ
>
> ----- Original Message ----- 
> From: "Bob Tinney" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, August 24, 2007 12:07 PM
> Subject: Re: FCC aproves HD A M broadcasting 24 hours a
day
>
>
>> Hi Tom and all,
>> I really think that HD radio is being forced on local
broadcasters by the
>> XM
>> and serious satellite radio services.  If A M and FM
radio is going to
>> survive, it must compete with the quality of other media
and digital
>> radio,
>> though it totally messes up the ability to hear weak
signals on the A M
>> and
>> FM bands, does that.  Digital radio seems to be more
efficient as the
>> digital transmissions are only running 10% of the power
of the main 
>> analog
>> transmitter.
>> So, I'm trying to keep an opened mind and we'll have to
wait and see just
>> how things develop.  One thing that I do know is that HD
radio receivers
>> are
>> not being snapped up by consumers, and that the satellite
radio services
>> are
>> both in financial trouble also.
>> 73
>> Bob, [log in to unmask], K8LR
>> Skype Name: bobtinn
>> Life is full of challenges, that's what makes it
interesting!
>>
>> ----- Original Message ----- 
>> From: "T Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 23, 2007 2:27 PM
>> Subject: Re: FCC aproves HD A M broadcasting 24 hours a
day
>>
>>
>>    Bob and all:
>>
>> For what it's worth, my two cents worth on the whole
thing is that this 
>> is
>> really sad.
>>
>> I can't figure out who, other than the marketers of HD
radio, are
>> benefitting from this whole thing.
>>
>> Considering the quality of AM radio today, I am not sure
the general
>> public
>> will be shouting for joy over this ruling.
>>
>> You just have to wonder who's running the FCC today
anyway!
>>
>> I'm all for technological progress, but is this really
productive and
>> beneficial to the general public as a whole?
>>
>> 73 from Tom Behler:  KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Bob Tinney" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 23, 2007 12:29 AM
>> Subject: FCC aproves HD A M broadcasting 24 hours a day
>>
>>
>>> Hi,
>>> I know that this topic is not strictly amateur related,
but I'll bet 
>>> that
>>> 99.9% of us have done a lot of swl work and have
listened to dx stations
>>> on
>>> the A M broadcast band.  The days of looking for DX on
the A M band may
>>> end
>>> forever on September 14.  On that date, the FCC will
allow HD stations 
>>> to
>>> broadcast 24 hours a day.  Below is some quoted material
from the Radio
>>> Mag
>>> online.
>>> "FCC Update
>>> FCC logo 1
>>> IBOC Rule Changes Kick in Sept. 14
>>> Publication of the FCC's Second Report and Order in the
Federal Register
>>> on
>>> Aug.
>>> 16 means that the long-awaited IBOC digital radio rule
changes will
>>> become
>>> the law
>>> of the land on Sept. 14.
>>> Among the most controversial new provisions will be the
green light for
>>> 24-hour HD
>>> Radio hybrid operation on AM. Critics of Ibiquity's
implementation of AM
>>> IBOC digital
>>> transmission have charged that many stations currently
serving a
>>> significant
>>> audience
>>> within secondary nighttime coverage areas will lose that
service area to
>>> digitally
>>> generated adjacent-channel interference. In a separate
but related move
>>> announced
>>> just this week, the FCC appears to be addressing AM
owner coverage
>>> anxieties
>>> by tendering
>>> an NPRM that would grant new FM repeater privileges to
eligible AM
>>> licensees.
>>> Among other key provisions set to go into effect include
the right for
>>> FMs
>>> to commence
>>> HD Radio multicasting without experimental authority
grants and use of
>>> separate FM
>>> antennas for HD Radio hybrid operation without STAs.
>>> Other matters, such as specific public service
requirements, limitations
>>> on
>>> and regulatory
>>> fee assessments for digital subscription services, and
what role
>>> multicasting will
>>> play in any new ownership equation remain to be
addressed by future
>>> rulemaking.
>>> Bob, [log in to unmask], K8LR
>>> Skype Name: bobtinn
>>> Life is full of challenges, that's what makes it
interesting!
>>>
>>