[opendtv] Re: Louisiana governor blasts faulty wireless networks
- From: "John Willkie" <JohnWillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sat, 10 Sep 2005 16:19:18 -0700
Jeez, John, and you're a broadcast engineer.
Just how much harder would it have been for an 8-VSB broadcaster, were they
desirous, to switch to COFDM in an emergency? It would have taken about 10
minutes longer to hook up the COFDM exciter to the power amp.
Some people will go to any length to favor their preferred modulation
schemes. Just look what the General did to Armstrong!
John Willkie
P.S. Much more power consumption would have been involved in receiving the
signals, and this in a city with no AC power. THINK: batteries, and they
last longer in in service radios than in TVs. Cell phone batteries? Leave
them for cell phone calls.
----- Original Message -----
From: "John Shutt" <shuttj@xxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Tuesday, September 06, 2005 10:01 AM
Subject: [opendtv] Re: Louisiana governor blasts faulty wireless networks
> Most cell phone towers have battery backup for 24 hours of usage, and no
> generator. When you have hundreds of towers, it is not economically
> attractive to maintain that many generators. That is where a single big
> stick (or a handful of medium sticks) works to your advantage.
>
> If, hypothetically speaking, we had DVB-T in the New Orleans area that
> included DVB-H, then a single broadcaster, that did have a backup
generator
> at the transmitter site and bunkered fuel for several days, could have
> changed it's mode of transmission to QPSK and reached more receivers,
> including hand held cell phones. But eventually the batteries in the cell
> phone would have run out.
>
> But practically speaking, even if the above were true, the most effective
> mass communications method in New Orleans was radio. Analog radio. Local
> analog radio. Sorry XM and Serius.
>
> John
>
> ----- Original Message -----
> From: "Allen Le Roy Limberg" <allimberg@xxxxxxxxxxxx>
> To: <opendtv@xxxxxxxxxxxxx>
> Sent: Monday, September 05, 2005 10:41 AM
> Subject: [opendtv] Re: Louisiana governor blasts faulty wireless networks
>
>
> > The problems are that the towers for these communications network get
> > blown
> > down or they do not have adequate auxiliary power. You don't fix this
> > with
> > more spectrum.
> >
> > Al Limberg
>
>
>
>
> ----------------------------------------------------------------------
> You can UNSUBSCRIBE from the OpenDTV list in two ways:
>
> - Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
>
> - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
>
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at
FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts:
