Ron and Steve,
The radio automatically switches to hd if the signal is good enough to
receive the digital signal.  It takes about 5 or 6 seconds to switch over
and you can really tell a difference when the radio goes digital.  The high
and low frequency response improves and the background noise goes away.
I don't know about the power restriction, but I think its still 10%.  If
digital gets more popular, the power mix might change, but it is still 10%
to digital at this time.
Bob, [log in to unmask], K8LR
Skype Name: bobtinn
Life is full of challenges, that's what makes it interesting!

----- Original Message ----- 
From: "Ron Canazzi" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, September 16, 2007 10:57 AM
Subject: Re: HD Radio is alive at night and DX is still available too!


Hi Bob and Steve,

I thought that part of the deregulation was that the HD stations would be
allowed to use full power for their HD signals--not the formerly restricted
10%.  Am I wrong about this?

----- Original Message ----- 
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, September 16, 2007 10:13 AM
Subject: Re: HD Radio is alive at night and DX is still available too!


Bob,

That doesn't surprise me because so little energy is being directed to the
digital signal (only 10% of the carrier power).  A few months ago, when I
was visiting my folks in Connecticut, I tuned in a Boston station that I
knew was broadcasting HD during the day.  The station was about 100 miles
away, but I could copy it easily in analog.  I then tuned to either side,
expecting to hear the familiar roar of HD, but heard absolutely nothing.
That pretty much convinced me that DX-ing wouldn't be much of a problem when
HD came on at night.  If you think of it, low power AM stations operating 24
hours a day have already wrecked most DX-ing on the broadcast band, so
there's little reason to beat our collective breasts about deteriorating
conditions.

Steve

----- Original Message ----- 
From: "Bob Tinney" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, September 15, 2007 23:13
Subject: HD Radio is alive at night and DX is still available too!


> Hi All,
> This is the second night that the FCC has allowed A M broadcasters to
> broadcast HD radio after sunset.  There are not a lot of stations on the
> digital band wagon yet, but I have heard about 6 stations with strong
> enough
> signals to occasionally trigger the digital mode in my HD radio.  The one
> that comes in the best here in southwest Michigan is
> W H A M 1180khz in Rochester NY.
> As to D X ing, though the band has some additional hiss on it, D X ing has
> not been impacted as much as I thought it would be.  What do you think?
> 73
> Bob, [log in to unmask], K8LR
> Skype Name: bobtinn
> Life is full of challenges, that's what makes it interesting!
>
>
>