[opendtv] Re: Interesting Point
- From: Richard Hollandsworth <holl_ands@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Wed, 26 Oct 2005 03:03:26 -0700 (PDT)
Trying to use the FCC data base re Mexican stations is frought with problems.
Sometimes the location is for the studio, vice transmitter tower.
Most of the time they only provide the absolute minimum of information.
[Callsigns, we don't need no stinkn Callsigns....]
My best guess for XHUPN proposed location is South and West of Tecate, sharing
the XHBCE-FM tower on Cerro Bolla Mtn, as shown in the fol coverage plot:
http://hdtv.forsandiego.com/messages/76/3820.html#POST19951
Since XHUPN's proposed channel 53 is outside the DTV core and would probably
cause interference problems, I have always taken the proposed choice with a
grain of salt.
But there are a total of NINE proposed new DTV stations in the database listed
for Baja-Norte.
So who is going to pay to change their frequency assignments when the 700+ MHz
band is activated?????
Seems there may be a cross-border frequency coordination problem brewing.....
////////////////////////////////////////////////////////////
I remember reading the fol article in SD UNION re Qualcom MediaFlo on-air test:
http://www.signonsandiego.com/news/business/20050805-9999-1b5mediaflo.html
Note that they did not say what frequency or power levels there were using.
In the back of my mind, I thought I had read somewhere that it was much higher,
in a CellPhone band.
Now I have to worry about Preamp Overload, since I am only a few miles away
from Black Mtn.
The other two sites are Mt Miguel (most UHF DTVs are here) and an unspecified
Qualcomm building (probably Sorrento Valley?).
<holl_ands>
///////////////////////////////////////////////////////////
John Willkie <johnwillkie@xxxxxxxxxxxxx> wrote:
Tecate is some 37 km from downtown san diego, and that's just city center to
city center; the transmitter sites are farther away, to the south and East of
Tecate. (there is a peak to the North, Mother Tecate Peak, but i's in the U.S
and is a protected site.
background: Mexico has begun it's 18 year conversion to digital broadcasting.
There are two TV allocations in tecate; at this point, only one is used. There
are vague plans to construct the second, but it's been at least a year since
I've talked to the appropriate chief engineer. Tijuana has only one digital
transmitter at this point, but the area is in the first phase of Mexico's dtv
transition. (six years.)
Qualcomm is using 53 only temporarily, KFMB-DT is currently using the channel,
and they will use their analog for digital (or perhaps a UHF channel, depending
on what the FCC says about power levels for digital V's) when analog sunsets.
The source is one I consider dispositive: Bob Gonsett's Communications General
Communicator newsletter. If he's ever made an error, I haven't heard of it.
John Willkie
-----Original Message-----
From: Richard Hollandsworth
Sent: Oct 25, 2005 11:02 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Interesting Point
www.upn13sandiego.com FAQ still says XHUPN-DT plans to fire up on CH53 from
mountains south of Tecate, Mexico sometime "soon".
FCC data base (search for "tecate") still shows CH53 reserved for a future DTV
station located in Tecate, Mexico.
So where did you hear that MediaFlo was being transmitted on CH53 in San
Diego...or maybe it was Tecate prior to launch of XHUPN-DT?
PS: Most people would include both Free-To-Air (unencrypted) and Subscription
(encrypted, i.e. USDTV) transmissions as being "Broadcasting".
================================================================
John Willkie wrote:
I say this despite the fact that as of a few days ago, Qualcomm's Media Flo was
available in San Diego, on Channel 53 (we have a DTV station on channeol 55 for
the moment.)
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